Archive of Our Own ^beta

Chapter Text

It wasn’t like being a pro wasn't fulfilling, between all the fans and villains to pulverize he lived a very active life, but even with all of that and various one-night stands couldn’t fill the hole he felt every night. 

Dynamight was sitting on a roof, looking out over the street as he took a break when he heard something below in an alley. With his curiosity peeked, he gets up leisurely and strolls over to the other side of the roof and looks over the ledge. A blonde brow quirks up in interest when he sees some kids picking on another, but that wasn’t what caught his eye. No, it was the little nerd sitting against the alley wall, crying as the bullies walked away, the dirty greenette was /perfect/. He was tiny, covered in angel kisses, and those little chipmunk cheeks were just begging for the hero to bite them. 

The beautiful preteen was sniffling as he slowly got up off the ground, nursing his busted lip as he limped towards the street, but not before the blonde snapped a few pictures of him for later. 

“Hey, it’s Dynamight, I’m checking out some suspicious activity. Send someone to cover the rest of my patrol.” He says into his comms to the person manning the communication station back at his agency. 

[Understood, sir.] He makes a mental note to give her a pay raise for not being as annoying as the others under his payroll. 

With that taken care of, he stealthily follows the greenette along the rooftops, his intrigued scarlet gaze never wavering. When the boy comes to a run down apartment building he growls with a disapproving scowl. 

‘This will not do.’ Dynamight thinks, watching the greenette enter an apartment. ‘Midoriya? Hmm, I’ll get Ears to look up everything on the family later.’ He thinks, smirking wickedly as he stands from his hiding spot, eager to see the emerald beauty again. 

~

It was really too easy for Katsuki to get everything about the family. When he found out Inko worked 2 jobs and was rarely home because of that fact, and he knew how horrible the crime rate in that neighborhood was, he didn’t want someone taking his beauty away from him. 

So, in the interest of protection, the blonde made a few changes. 

“Sir, are you sure you want to buy the whole building?” Katsuki’s financial advisor asks, looking over the purchase demand. 

“Yes, and I want the building updated to code, as well as a high end security system put in place around the premises.” The hero orders, standing before the man’s desk in his office of the blonde’s agency. 

“Are you sure?” 

“Did I stutter?” 

Breaking out in a nervous sweat, the poor office man starts the process of purchasing the property and contacting a construction company to make the changes. Once Katsuki’s sure everything is going as planned, he turns and leaves, grinning triumphantly as he thinks about his next plan. 

~

Izuku, as he discovered the beauties name was (even if the boy was a total Deku), after he kept misreading it until he heard Inko call the boy’s name one day when the hero was watching from the roof across the street, was perfect. Not only was the boy gorgeous but he was a huge hero fan, specifically of the number 1 Pro Hero Dynamight. It was all too perfect. 

Months passed and still Katsuki couldn’t stay away from the preteen no matter what he tried. He even started picking up patrols around the greenette’s school and home, timing it so he could always follow the boy to and from home. The bullies were still a problem, but not for long, even if a dark part of the blonde enjoyed seeing Deku covered in blood that was something he’d have to explore in the future when he finally makes the beauty his, but for now he can’t let the greenette be crushed under the bullies' heel. 

~

“You could just ask him out, you know.” Red Riot says beside Dynamight, while the duo is on patrol. 

“I will, eventually.” The blonde sasses, glaring at the skeptical man. 

“It’s been 6 /months/!” The hardening hero says exasperated. “If you don’t I doubt it will be long before someone else scoops up the cutie.” 

“I /will/.” Dynamight growls, stopping to glare murderously at his hero partner, reaching out to grab the man’s collar. “And if you touch him, I’ll kill you.” This wasn’t a threat, it was a promise, and the red head knew it. 

Swallowing his nerves and ignoring the cold sweat building along his brow, Red Riot nods, mouth sealed shut as he struggles to hold the dangerous scarlet glare until finally the blonde releases him and starts walking again, acting as if nothing happened. 

~

For the 1-year anniversary of Katsuki finding Deku, he decided to leave a gift for the emerald beauty, a rare and prerelease Dynamight action figure that had been modified to be /extremely/ detailed, but before he even made it to the newly refurbished apartment building the blonde heard something in an alleyway. 

He stops and looks down to find Deku surrounded by a trio of bullies, unconscious. Blood thirsty rage lights his blood hotter than lava as he drops the gift and leaps over the edge of the roof, landing right behind one of the bullies. 

What transpired next, if it ever came to light, would cost Katsuki his hero license and possible jail time, but the dead don’t tell tales. 

Once the garbage is disposed of, he turns towards the bleeding greenette and he rushes to pick him up, cradling the preteen like he’s the most precious thing in the world, which to Katsuki, he is, before the hero is blasting into the sky towards the boy's home. 

He got lucky. The wounds were worse than ever before, and Katsuki was thanking all the gods he found Deku when he did. 

Being in the beauty’s room was surreal and it definitely boasted his ego when he saw the walls were covered in Dynamight merch, with some All Might stuff too but that wasn’t what Katsuki was focusing on. 

Already aware of Inko’s schedule allowed the blonde to relax as he took the time to clean and bandage the boy’s wounds. After taking off Deku’s school uniform, he files those images away for spank material for the next month, he gives the preteen a sponge bath before treating his wounds and multitude of bruises. It’s an hour later when he finally finishes dressing the last wound and redresses the greenette, tucking him into bed before heading into the kitchen to make his fanboy something to eat. 

After an unreasonable amount of cursing at the practically empty pantry, Katsuki sets 2 bowls of katsudon on the table just as a disoriented greenette comes limping out of his room, looking confused until dark circle rimmed emerald eyes land on the hero standing by the dinner table. 

Chapter Text

“I’m dead.” Izuku says, stunned, slack jawed as he stares at his literal wet dream standing in his apartment, wearing /his/ tiny apron in a pair of tight black skinny jeans and signature skull t-shirt that hugs broad shoulders and biceps sinfully. 

“What the fuck? You ain’t dead, nerd.” Katsuki scoffs, appalled at the mere thought of his fanboy being dead.

“Then why- how are you here?!” The boy asks, frozen, gaping like a fish at the man, wincing at the sudden pain in his side. 

“I saved you from those bullies and brought you home. When I saw your parents weren’t here I used your key to get in. When I mentioned taking you to the hospital you started to freak out.” Katsuki’s practiced story goes off without a hitch. He can tell Deku believes him nearly instantly when the preteen starts mumbling about his address in his back and noting his keys were on the table by the door, not to mention he can’t remember what happened after he was shoved to the ground. 

The hero looks at the boy concerned, but inside he’s as giddy as a child on Christmas eve. Everything was going to plan and he couldn’t be happier Deku believes him. 

Izuku felt so ashamed that Dynamight had to save him. That he wasted the hero’s, /his/ hero’s, time taking care of a quirkless nobody. Wincing, he limps towards the table to sit on one of the chairs, unable to stay standing anymore, one of his arms  wrapped around his side. The blonde races over to help him, scooping him up in his strong arms before softly depositing the depressed teen on a chair. 

“You need to be careful. I’m no doctor, but I’ve gotten hurt enough to know you have at least one broken rib and you need real stitches, maybe even a concussion.” Katsuki says gently, kneeling beside the greenette’s, one hand on the back rest as the other tenderly slides through tangled curls, relishing the light blush covering Deku’s cheeks as the boy’s eyes get impossibly wider. “Will you, please, let me take you to the doctor?” 

The pleasant haze that had been fogging up Izuku’s head at being taken care of so sweetly evaporates the second he hears the word doctor. All color leaves his face as he begins to panic, reaching out desperately for his hero. 

“No, please! You can’t take me to the hospital!” The preteen cries out, tightly gripping Dynamight’s shirt in his small hands, terrified. 

Katsuki is genuinely both intrigued and worried. He knew one of Inko’s jobs was cleaning at the hospital nearby so she’d be alerted if her son was brought in for medical attention. 

“Okay, kid, we won’t go to the hospital, but will you let me get someone to come by, off the books, to heal you? You were seriously injured by those bullies.” The blonde offers, leaning in a little, his hand still in the boy’s curls and the other one coming down to settle on a tiny waist. 

“My mom won’t find out, will she?” 

‘Of course he doesn’t want to worry his mom. But I can use that.’ The hero thinks, observing the greenette. Large doe eyes were glassy with tears and his skin was pale from blood loss but there was a hint of a blush trying to break through, and sweat was building along his hairline. Yep, Katsuki needed to get a healer in here soon.

“I promise.” He says, hoping he can keep his promise, but his love for the beauty will always push him to make sure Deku is safe. 

With a reluctant sigh, and wincing in pain, Izuku agrees before promptly passing out again, crumbling right there in the blonde’s arms. 

Katsuki doesn’t waste a second before he calls a doctor that owes him one and gives the woman the address, taking the greenette back to his bedroom. He’d dressed the boy in shorts and a tee-shirt, but now they needed to come off again for the doctor, and maybe a little too eagerly, he undresses the angel and tucks him in again. 

~

“He had some serious internal injuries, but I was able to heal all of them. Are you sure he’s safe from whoever hurt him?” The doctor asks as she packs up, turning towards the hero. 

“Yes, I made sure of it.” Katsuki answers, his voice taking a dangerous edge. 

“I take it since you were the one that cleaned him up, you noticed the cut marks on his thighs from a razor.” She says sadly, turning towards the preteen sleeping in his bed, frowning. 

“I did and plan to help him however he needs.” 

The doctor gives him a hopeful look before standing up and leaving, patting the man on the shoulder in a silent acceptance before walking out of the room. 

Izuku wakes up a few hours later, feeling better than he has in years, to find himself in his underwear with Dynamight sitting beside his bed, looking at something on his phone. 

The greenette screams, startling the hero who is immediately up and checking to make sure he is okay. 

“What are you doing in my room?!” Izuku shrieks, sitting up in bed, holding the blanket up to cover himself. “Where are my clothes?!” 

“Relax, nerd, I had to take them off for the doctor to heal you.” ‘Not 100% true, but he doesn’t need to know that.’

“That-” Emerald eyes go wide in horror and shame. “Does that mean you… saw?” 

“Izuku… I would like to propose an idea to you.” Katsuki says, skipping over the question, getting right to the point. 

“Sir?” The greenette answers, looking at him nervously, twisting the fabric in his fingers, eyes flicking back and forth from Katsuki. 

“My name’s Katsuki Bakugou, but you can call me whatever you want, sweetheart.” The blonde says charmingly. “Anyway, have you heard about the Big Brother program?” 

Izuku nods, postures for the program were all over his school. It was for kids with problems, be it mental or physical, and they are paired with high schoolers or college kids looking to mentor the younger kid through the hardest times of their life. He had never thought anyone would ever want to be his Big Brother though, ever. 

“You-you want to-to wor-work with me?” The greenette stutters out, still not believing his ears, and trying to ignore the racing of his heart at the endearment. 

‘Fuck, he’s cute.’ Katsuki thinks, grinning fondly at the blushing boy. 

“I don’t say things I don’t mean, sweetheart, you’ll come to learn that as we spend more time together.” He says, leaning in, sitting on the edge of his seat, forearms resting on his knee, his face over the edge of the twin sized bed Deku is sitting in, maybe 6 inches between them. “I know this may seem like a lot, but I want to help you. Be there for you to lean on, so you can have the future you deserve.” He stares into uncertain emerald eyes, his expression serious and determined. Nothing will stop Katsuki from getting what he wants, and when the greenette relaxes, nodding with a teary smile, he knows he’s won.

Chapter Text

Katsuki was incredibly smug right now. Not only did he make an amazing impression on his beauty, but he also got to see, and touch, the boy’s body before he woke up both times. The way his cock twitched in his pants in satisfaction when his affectionate touches along the greenette’s body made the preteen’s small cock jump to meet those dangerous fingers that ran along the shaft, tracing down until he rolled Deku over onto his back so he could see that perfect ass. 

It had taken every ounce of self-control for Katsuki to not go any further then giving the preteen’s tiny cock a few strokes and stick a few fingers in the boy’s mouth to get them slick before the blonde started testing Deku’s hole, grinning smugly when he finds it already mildly loose. 

At first Katsuki thought that maybe that meant his beauty was selling himself, but he’d know if that was happening. So once his rage subsided, he started searching for Deku’s toy collection, surprised when all he found was lube. ‘Hmm, maybe I’ll give my baby his first toy.’ He muses, already pulling out his phone and sending a message off to get an exact replica of his cock made for the boy, and taking a few pictures for the future.

~Present~

Katsuki was washing the dishes, Izuku sitting in the living room per the hero’s request when the blonde called out to him. 

“I already filled out the paperwork for the Big Brother program. All I need is your phone number.” 

The greenette jolts up in his spot, timidly turning around to look over the back of the couch towards the kitchen. 

“Oh, uh, well our house phone number is-” 

“No, sweetheart, I mean your cell phone number.” The blonde says, interrupting the nervous boy as he dries his hands and walks over. 

Izuku’s eyes go wide before he looks away, ashamed, fidgeting in his spot. He had a cellphone once, but then the bullies destroyed it, and even with the decrease in their rent, thanks to the new landlord, they couldn’t afford to get him another one. They were still paying off all the doctor bills from his… accidents… 

“I don’t… have one…” The greenette says, a dark cloud settling over him as he prays for the couch to swallow him whole. 

“Then I’ll get you one.” Katsuki says effortlessly, nonchalantly shrugging it off as he takes a seat beside his beauty, grinning down at the stunned boy. 

“You what?! Why would you do that? You’ve already done so much that you didn’t need to.” Izuku says, baffled, turning in his seat to properly face the man, hands on the sliver of cushion between them. 

“I already told you, sweetheart, I don’t do anything I don’t wanna do.” 

And Katsuki’s true to his word. After he left the greenette at home, with a promise to see him the next morning to walk him to school, he went out and bought the boy an expensive cellphone with mirror technology synced with his own phone so he could see everything Deku did, he also added a GPS tracker on it. The pure joy on the greenette’s face when he saw the phone filled the hero with satisfaction the rest of the day, especially since he got a nice warm hug that had him reveling in the 14-inch height difference in his office later . 

~3 Days Later~

Kacchan:

[How are you feeling today, sweetheart? Any problems?] 

Izuku was doing homework when he got the text and his cheeks immediately heated at the nickname that the blonde continued to use for him. He didn’t understand why Japan’s number 1 hero was so insistent on helping him, and he knew he shouldn’t get attached, but he can’t help it. Dynamight was his gay awakening and the greenette’s his number 1 fan. The fact that the man saw the shrine in his bedroom still makes him want to move to a distant country and change his name to Larry. 

Izuku:

[I’m fine, Kacchan. Just finishing homework.]

Kacchan:

[Did you eat dinner yet?]

The second he sees the text, the preteen’s sinking back into his desk chair, grimacing as he thinks of something, anything, to tell the hero, but before he can another text comes in.

Kacchan:

[Deku, you better tell me the truth.] 

He knew it was a threat, but that didn’t stop the desire from settling in his gut, making his entire body heat up 10 degrees as he quickly types out a response.

Izuku:

[I wanted to get homework done first and mom’s gone for the night. I was going to make some ramen. I promise, Kacchan, I was going to eat tonight. I just wanted to get my schoolwork done first.] 

Kacchan:

[the rambling is as cute as always, sweetheart, but all I’m hearing is you’re going to eat crap instead of cooking yourself a good meal like you need.] 

Izuku’s cheeks might as well be permanently stained red at this point as he reads the latest message. 

Izuku:

[I’m sorry, Kacchan.] 

He’s sitting on the edge of his seat for 10 minutes, waiting for Katsuki’s reply, anxious.

Kacchan:

[Food will be there in 15. I already paid for it so don’t worry about giving the extra any money.]

Izuku:

[kacchan, you didn’t need to do that!]

Kacchan:

[Like hell I didn’t. You need to stay healthy and I’m not gonna let you poison yourself on that crap. When I get the chance I’ll have you come over and I’ll teach you how to cook.] 

The greenette can’t think of anything to say, his heart’s feeling so full of adoration all he can reply with is a green heart before he pockets his phone and finishes the rest of his homework. 

After dinner he finally replies. 

Izuku:

[thank you for dinner, Kacchan! I can’t remember the last time I had such amazing food.] 

Kacchan:

[Are you not eating well, sweetheart?] 

Izuku:

[I eat well enough.] 

Kacchan:

[I need you to send me some pictures.] 

The request is odd and instantly makes the greenette’s mind flood with possibilities. 

Izuku: 

[what does Kacchan want?] 

Yep, his cheeks are going to be permanently red now. He’s going to look like a strawberry for the rest of his life. 

Kacchan:

[I need you to send me a picture of your body. I wanna see how malnourished you are, also I want to make sure there are no more cut marks and that the old ones are healing properly. Yes, nerd, I saw. Now, send the picture.] 

It was 20 minutes before Katsuki got his pictures, and oh god were they perfect. Not only did Deku not argue with him about it, but he sent whole body /nudes/. He was in fucking heaven. That beautiful blush paired with the slight arousal in that tiny cock was enough to have him cumming all over himself like a fucking virgin. Oh yes, Izuku Midoriya was perfect for him and he was going to become so good at taking care of his nerd that the greenette would never think to look for anyone else. 

/DING!/

Deku:

[Was that good, Kacchan?]

Katsuki:

[So good, sweetheart. Perfect.] 

It's a few minutes later that he gets a timid text back. 

Deku:

[...I want to be good for Kacchan…]

Katsuki sucks in a breath, cock giving a few strong twitches at the possibilities in the future, but for now he needs to focus on making sure to keep the boy’s trust more than anything else. 

Katsuki:

[You're too skinny. I’m going to start ordering you dinner and bring you lunch every morning before I take you to school, maybe breakfast too. I can see that there are a few open cuts on your right thigh. I’m going to start checking them every day. Have the bullies been bothering you?] 

Deku:

[No… no one’s seen them since the day you saved me and no one’s come after me either.]

A smug smirk settles onto Katsuki's face at the confirmation. He’d worried that the bullies' families would take notice of their kids' disappearances, but it turns out he had nothing to worry about. All of them were in jail, Tartarus, all villains that were put away after the downfall of AFO.

Chapter Text

A month had passed since Izuku’s world was turned upside down by the man of his dreams. Every day was like a dream when Kacchan would show up in his fancy car to drive him to school and escort him home in his full hero getup, and sometimes he’d even take him out to dinner. The once bullied and lonely boy was now spoiled and showered with affection. 

It was still a little weird sending pictures to the hero every night, and Izuku knew they didn’t need to be nudes, but after the first time when he mistakenly sent a nude instead of just close up shots, he felt so embarrassed he just kept doing it. He had originally meant to stop, but the hero had been so responsive after that first time, he couldn’t bring himself to stop. 

They texted all day, up until Kacchan forced him to go to sleep. The greenette had never felt so wanted by anyone but his mother and it was a struggle every night to put his fancy phone away and to believe every morning that this knew life wasn’t a dream. 

Everyone around him had noticed a change as well, hell, it was impossible not to when the number 1 hero regularly was waiting at the front gates leaning against his car, looking sexy as fuck, waiting for him. Yet that wasn’t Izuku’s biggest problem. The biggest struggle was his mom. 

She’d been able to quit one of her jobs with their rent so low and all their medical bills suddenly paid off, which meant she was home more and noticed all the changes in her son. 

“I want to meet him.” Inko says, standing at the end of the hall that led to the front door where Izuku was taking off his shoes. 

“What?” He asks, his head snapping up to look at her, bug eyed. 

“This man that's your ‘Big Brother’ in that program.” She says skeptically, arms crossed. After everything her son’s had to suffer through, she was almost positive that this mystery man was just some sick pervert preying on her boy. 

Inko had expected Izuku to get nervous, to deny it or freak out, but what she didn’t expect was for him to smile brightly, eyes wide with hope as he speed walked over to her. 

“You do?!” He says, excitedly. With his mom quitting one of her jobs to be home more with him, Izuku hoped that she’d finally be able to meet Kacchan, and maybe if everything went really well, he’d be able to spend more time with his hero. 

“You-” She starts, looking at him suspiciously. “Yes, I want to make sure he’s a good person. Have him come over for dinner tomorrow night.” 

Green curls fly everywhere as he nods rapidly before racing off to his room to text Kacchan. 

~

Katsuki had never been happier. He’d expected Deku to put up a fight with everything he’s asked of the boy, but instead the greenette eagerly agreed, it was all too perfect. The blonde knew that eventually something would happen to ruin his bliss but he’d let the planet burn before he let his beauty go. 

He was in his trophy room, putting up his newest pictures of Deku when his phone chimed, breaking his focus. Giving the framed nude a once over to make sure it was perfect, he pulls out his phone, smirking wickedly when he sees it’s a text from the preteen. 

Deku:

[hey, Kacchan!]

They’d seen each other only 15 minutes ago, but already he missed his baby boy horribly. 

Katsuki:

[Hey, sweetheart. What’s up?]

Deku:

[I wanted to ask you something, but it’s okay if you say no! No pressure or anything!]

The hero rolls his eyes as he types out his reply. 

Katsuki:

[Just ask, nerd.]

It takes 10 minutes for the greenette to finally send his question. 

Deku:

[my mom wants to meet you.]

He breaks out in a deep rumbling laugh thinking about his sweet baby muttering to himself trying to find the right words. 

Deku:

[Now that she’s home more, she noticed how I’m happier and wants to make sure you’re not a perv, which is ridiculous cuz Kacchan is amazing and a hero, he’d never hurt me, but she still wants to meet you.]

Katsuki:

[Sweetheart, relax. When does she want to meet me?]

Izuku couldn’t believe this was actually happening. He sent the plans and a minute later Kacchan said he’d be there. His little heart couldn’t take the overwhelming overload of joy as he fell back on his bed in a fit of giggles. 

~

“So what are you going to wear?” Eijiro asks during their game night that evening, sitting in Katsuki’s living room as they play video games. 

“What’s it matter to you?” The blonde barks, not wanting to lose his focus. 

“Well, if you don’t make a good impression, she’ll keep him from you and you’ll have an even harder time convincing her to let you have him.” 

“Every one has a price.” Katsuki says, winning the game with a smug grin, and he's right. Even if Inko doesn’t approve of him now, he knows he’d be able to buy her eventually. She became a mother at 18, working 2 jobs most of Deku’s life to make ends meet. A woman like that, that never really got to live, it will be almost too easy for him to pay her to give him Deku. 

“True.” The red head relents, nodding grimly, but stays silent, focusing back on their game. 

When Friday, the big day, finally arrived, Katsuki went through his check list over a dozen times to make sure he made a good impression. He stops by a florist for a beautiful bouquet and wears his best suit, and makes a strawberry cheesecake for dessert. 

To not ruin the surprise he had Eijiro drive the greenette home from school, his hero duo on a call with the blonde so he could hear everything his love had to say. Which mostly consists of ‘Kacchan’s sugoi’ and ‘he’s so sweet’ making his chest swell with pride as he gets ready. 

Izuku had just met Red Riot! He can’t believe it! His mind's still reeling from that miracle as he gets dressed. Cheeks a light pink as he pulls on the skinny jeans Kacchan had bought him, along with his favorite Dynamight tee-shirt that had been given to him during a give-away 7 months ago that he can’t remember entering or not. 

He’s giving himself a quick once over when the doorbell rings and he’s sprinting out of his room to get it. Shouting a quick ‘got it’ over his shoulder. 

“Evening, Izuku.” Katsuki purrs, giving the preteen a half bow, intense scarlet eyes focused on the flustered nerd. 

‘He’s so handsome.’ Izuku thinks, eyes scanning over the entire expanse of the stunning blonde wearing the same suit he did for the Hero Rewards, when he was awarded the number 1 spot. 

“Hey, Kacchan.” The greenette says with a dopey smile, melting in his spot when he finally notices the flowers. 

“Izuku, invite our guest in.” Inko’s voice from the kitchen breaks them from their daze; Katsuki reveling in the gawking preteen while enjoying the sight of Izuku in the clothes he gave the boy. 

“Please, come in, Kacchan.” Izuku says, bowing his head, beat red with embarrassment that he’d been so caught up staring at the hero he’d forgotten about his mother. 

They walk into the apartment, the blonde already well acquainted with the layout, finding the greenette woman in the dining area, setting platters of food on the table. They weren’t anything special, almost like she was trying to chase him away instead of welcoming him. Jokes on her because Katsuki’s not going anywhere. 

“Mama, I’d like you to meet Katsuki Bakugou.” Izuku introduces, playing with his fingers, nibbling the inside of his cheek. 

“Ha, that’s very funny, Izuku. What would the number 1 pro hero be doing here?” She laughs, thinking it’s a joke until she turns towards them and stops in her tracks, jaw dropping to the floor. “Oh my god.” 

“It’s nice to meet you ma’am. These are for you.” Katsuki says with a charming smile, holding out the flowers.

“You are… Izuku’s big brother?” She asks, baffled, looking between her son and the hero. 

“Yes, ma’am. I found Izuku being bullied and came to his rescue. I’d noticed him before, but didn’t know it was that bad, so I volunteered to be his big brother.” His practiced words have the exact effect he had been hoping for. 

Thrilled with his response, Inko claps her hands together, beaming up at him. 

“This is wonderful! Izuku needs a good male role model! I’m so happy you found my son! If you need anything, just let me know!” 

“Of course, thank you for agreeing to let me continue to help Izuku.” Katsuki says with a knowing grin as his eyes flick over to Deku, finding the boy already smiling up at him with a fond expression. 

Chapter Text

Inko had no idea what to do with a 14-year-old boy. She’d spent so much time working during his life, that she didn’t have the first idea about who he was. Then along came Bakugou, her unsuspecting knight in shining armor. 

Not only did he start taking Izuku out during the day now that summer break was here, teaching him some self-defense for a few hours every day, then on the weekends the blonde would take her son on day trips, but he always came home in the end. Not to mention he saved her by planning Izuku’s birthday party, taking the teen to an amusement park before coming back with her son and making a special birthday dinner.

“Ma’am, I’d like to ask you a favor.” Bakugou says one day after dropping Izuku off, the teen heads right to his room. 

“Please, Bakugou, call me auntie.” Inko smiles. “What is it?” She asks, motioning for him to come inside, leading him into the dining area. 

“I would like to invite Izuku to come spend the weekend at my place. I want to show him a few things for possible career choices.” Katsuki watches her closely, a wicked, smug monster in his chest revelling in the way she brightens up at him. 

He’s not a fool. The hero has seen the way she sags whenever he brings Deku home, and the way she smiles happily when he comes to pick the teen up, especially on the weekends. It was a cheap shot, but he knew she’d say yes, and most likely want him to take Deku every weekend after this. 

“Oh, really?!” Inko says, maybe a little too eagerly, freezing instantly when she remembers Izuku can hear them and his ‘Big Brother’ is across from her, making the shame brewing all the worse. 

“I have to work during the week, so I’ll have him back Monday morning. You’ll have the whole weekend.” He says, unaffected, hands in his pockets, waiting. 

“You’ll…” she looks back at the teen’s door. “You’ll have him all weekend?” 

“Yes, and if you like, I can take him next weekend too.” He says, growing increasingly delighted when she brightens again at the idea. ‘Maybe when Deku gets into UA I can see if she’d let him live with me? Maybe…’ “Izuku’s thinking about applying to UA’s support department, and I think he’ll get in.” He says, testing the waters. 

“Oh! He is?” She asks, stunned. “I didn’t know…”

“He’s quite smart. You should be proud.” He can hear Izuku puttering around his room, grabbing everything he needs for the weekend. Yep, Katsuki’s sure the little minx heard his mother agree with how loud her squeal was. 

“Isn’t UA quite far from here? And very expensive?” 

“Is that a problem?” 

Inko’s face screws up in discomfort, fidgeting in her spot. They’d just gotten to a good place financially and she liked not having to work all the time. Being able to actually do things she enjoyed. Did she really want to make another sacrifice for Izuku?

“I’m ready!” Izuku shouts, rushing into the room with a bag over his shoulder and a smile that rivaled the sun. 

“Got everything, Deku?” The blonde asks, ignoring the clear internal crisis the mother was having. 

“Yep!” The teen chirps, happily bounding over to the hero’s side. “I’ll see you Monday, mom?” He asks, turning towards her, expectantly. 

“Oh, yes, dear. I’ll be here.” She says, giving him a fake smile, waving them off as they leave.

‘This will be easier than I thought.’ Katsuki thinks, exceedingly giddy at how easily his plan is going. Before he knows it, he’ll have his beauty all to himself with no one to stand in his way. 

~ 

“Oh, Kacchan, I can’t wait to spend the weekend together! We can go to the arcade! Work on my new blueprints! Oh! We could even do some training! I’ve gotten a lot stronger since you started training me! I was trying on one of my old shirts and it’s gotten smaller in the shoulders, which I couldn’t believe but made me so happy! We were doing our physicals in gym class and the teacher was shocked to find I was actually in the proper weight category instead of being underweight like I always have been. It must be from all the amazing meals Kacchan makes for me every day. I’m sure without Kacchan I wouldn’t even be here.” Izuku rambles happily until that morbid thought stops him in his tracks, his excited demure falling away as he frowns, shriveling into what he once looked like.

But the blonde ain’t having any of it. 

Reaching over, Katsuki takes the greenette’s hand in his, interlacing their fingers as his thumb rubs soothing circles on the back of the teen’s hand. 

“We can do whatever you want, sweetheart.” The hero says, bring the hand up to his lips and kiss each finger, focus still on the road, but when he kisses the back of that small hand, he looks out the corner of his eye to see Deku, a blushing mess, wiggling in his spot. “As for that last bit, I’m here now, and that’s all that matters. I will /never/ let anything happen to you, ever.” Giving the much smaller hand one more kiss before letting their hands fall onto the greenette’s thigh. 

Izuku had never felt so flustered. He thought it was bad when he woke up the first day to find the blonde in his apartment or when he would train with a shirtless hero distracting him with those lick-me abs, but he was wrong. Getting so much affection and love from his idol was almost too much for his poor gay teen heart to handle. 

Katsuki lived in a penthouse near UA, a very convenient location, and a new one. He used to live in a small apartment closer to his agency, but after he found Deku’s blue prints for his support gear designs, he /knew/ the kid deserved to go to UA to pursue his dream, which played right into his plan to keep the teen with him forever. So, with this new knowledge, he sold his old place and bought a high end penthouse within walking distance of UA, which had an office for him and the greenette, a room for an at home gym, and an extra room for his shrine to his beauty. 

“Kacchan, this is amazing!” Izuku says in awe, walking into the home, looking around in wonderment at the wall of windows overlooking the city, and his dream school. 

“Good to know you like it, sweetheart, wait until I blow your mind with dinner.” The blonde smirks, taking the teens bag to his bedroom before heading into the kitchen to start cooking, his eyes flicking to find Deku looking over his merch collection on the large bookcase against the same wall as his large flat screen tv.

When he sees that pretty blush return to freckled cheeks, his smirk gets down right wicked as he starts whipping up the greenette’s favorite dish. His eyes glancing to the teen every few minutes, enjoying how the boy makes himself right at home, relaxing instantly in his space. 

As Katsuki dishes up the food, he gets them something to drink. After making sure Deku is distracted, he slips a pill into the blender with the milkshake ingredients, grinning proudly as he sets their drinks down beside their plates, reveling in how happy the teen is to get a homemade milkshake with dinner that he starts slurping it right down, having no idea of the sleeping pill inside said beverage.

Chapter Text

Dinner was amazing, as expected, and now they were sitting on the couch, snuggled together with Katsuki leaning back with his feet up on the long side of the L-shaped couch, Izuku curled up in his side, happily munching on popcorn as they watch an All Might movie. 

The hero knew he had about 2 hours before the sleeping pills kicked in and they were already an hour in, and he could tell Deku was already feeling the effects. The little greenette was starting to blink slower and slower, the hand that had been grabbing popcorn was laying limp on Katsuki’s lap. 

“Getting sleepy, sweetheart?” The blonde asks, running his fingers up and down the teen’s arm as he looks down at him with a smug grin. 

“Huh? Oh, ya, guess it was a longer day than I thought, Kacchan.” Izuku yawns, rubbing his eyes as he slowly sits up, body feeling sluggish. 

“Why don’t we go shower then head to bed, hmm?” 

“What about the movie?” The greenette mutters, getting his bearings. 

“We can finish it tomorrow. Come on, let's get ready for bed.” The hero says, kissing Deku’s forehead before scooping up the sleepy teen and carrying him to his massive master bath. 

Izuku should be used to all the affection Kacchan gives him, but every time the man kisses his forehead, holds his hand, texts him good night and good morning, checks up on him, takes him to and from school, and makes him food every day, he can’t help but blush or stop when his entire body goes warm. And now is no different. 

They enter the bathroom and green eyes go as wide as saucers as he takes in the extravagant room. There was a jacuzzi soaking tub, a 2 person shower with 3 different shower heads, and dual sinks. Everything looks so expensive so when Katsuki walks over to the tub the teen doesn’t move. 

“Sweetheart? What are you standing there for?” The blonde asks, turning towards the boy, confused. 

“This place is too fancy for me.” Izuku says without a filter, too tired to keep it in, rubbing his eyes. 

“Oh, baby, that’s not even possible.” Katsuki soothes, walking back over to his beauty and gently scooping the teen into his arms, pulling a cute yelp from the greenette as he moves them over to the sink. He smirks smugly as he sets Deku down, pulling back slightly, hands braced on the courter, bracketing the boy in. “I’m going to get the bath started, you wait here and I’ll help you get underdressed when it’s ready.” He gives the teen a kiss on the cheek before heading towards the tub. 

If Izuku wasn’t so tired, he’d be a nervous, blushing mess right now, but all he can feel is happiness and affection. Smiling fondly, he patiently waits for the hero to return, eyelids growing heavy as he rubs his eyes, yawning. 

“Okay, Kacchan.” 

Katsuki’s brimming with pride and satisfaction as he heads back over to the greenette and slowly starts to undress the dozing teen once the bath is ready, filled with warm water and amazing bath salts. 

“Lift your arms for me, sweetheart.” He instructs, pulling the shirt over Deku’s head, before getting started on his baggy gym shorts. Arousal pools in his gut as he gazes upon all that naked skin, counting the freckles as he picks the boy up, small legs and arms instantly wrapping around him as they walk towards the tub, both completely naked. 

With the greenette still in his arms, the hero steps into the tub, groaning as that perfect bubble butt rubs against his erection as he slowly sits down, his cock perfectly settling between Deku’s asscheeks.

“Kacchan.” Izuku whines, his brain becoming uncharacteristically foggy, so when he feels something long and /hard/ against his butt he can’t keep the embarrassing noises to himself, and even exhausted he blushes, cheeks a dark red as they settle in the bath, the water the perfect temperature, steam rising around them. 

“Just relax, sweetheart, and let me take care of you.” The blonde coos, reaching for /his/ body wash and a rag. Not moving the little greenette much in his lap, biting back a moan when his pulsing cock slips between sample thighs, and it doesn’t help when Deku whines again and squeezes his thighs together. He takes his time washing freckled skin, whispering sweet words in a bright red ear the entire time. 

The teen squirms, eyes struggling to stay open from exhaustion and the soothing touches on powerful finger ghosting over his body. One hand moving the rag over his skin as the other hand roams freely. Nibble fingers ghost over his nipples, pulling a whimper from him and his back arching into the hero’s broad chest.

“Kacchan?” Izuku moans, his hands laying limp as his side, his energy fading fast. “So sleepy.” He grumbles, head falling to the side, his breath hitching when he feels hot breath fan over the newly exposed skin and soft lips press against his pulse, and that’s the last thing he remembers before he finally succumbs to fatigue. 

A sinister smirk rises as Katsuki sets the rag aside and gets to the real task at hand. He grabs the special soap and moves the boy to lean partly over one of his arms so he can access the cutie's little hole, prepping him for the real main course. 

He spreads the special soap on his fingers and gets to work fully cleaning the greenette, stretching that tiny hole. It’s surprisingly easy, but then again when he first got to touch the boy he found him already loose too, so it isn’t that much of a surprise. 

The blonde had never felt so excited. He thought it was hard to keep his composure picking the teen up and having dinner, even sitting through the movie, but, oh ho, it’s almost too much to take now. 

Carefully, Katsuki picks up the sleeping beauty and heads to his bedroom, wrapping towels around them as he goes. Seeing his precious Deku laid out on his bed is a feast for the eyes. He’s been painfully hard this whole time and now he’ll finally get some relief. 

Deku lays on his back, spread out on the bed, Katsuki crawls up, situating between freckled legs before pulling the limbs over his thighs, taking his cock into one hand, giving it a few strokes as he pulls aside one of the teens asscheeks, licking his lips as he presses the head of his cock to the puffy, pink entrance. 

“Can’t tell you how long I’ve wanted to do this. How much self-control I had to use just to keep from making you mine every time you climbed into my car. Fuck, I’ve dreamed of this for so long.” He rambles, hearts in his eyes as he pushes in, sighing in relief when that tight heat swallows his cock eagerly. “Looks like I’m not the only one that’s been waiting.” He smirks smugly before pushing the rest of the way in. 

Once he’s fully sheathed inside his beauty his entire body goes alight with desire and his vision goes white, body shuttering as the fastest orgasm he’s ever experienced rips through him embarrassingly fast. 

“Fuck, it’s a good thing you weren’t awake to see that, huh, sweetheart.” He says weakly, face burning, flustered until he notices something. 

Katsuki wasn’t the only one who came prematurely. Across a thin waist is fresh cum and the little body under him is shivering from the aftershock, a lewd blush on plump cheeks. The erotic sight has his cock immediately filling out again, eager to continue what they started. Like hell he’s not going to fuck Deku until his balls are dry, and that’s exactly what he does.

Chapter Text

Since that first weekend with Kacchan, he’s been nearly inseparable from the hero. Even with summer over, the greenette still spent most of his days at the blonde’s penthouse. He’d been concerned at first that his mother would miss him, but then he remembered that she didn’t care much for him. 

After she’d started working less, he’d hoped that maybe they could finally become closer, but it was easy to see she preferred her /alone time/ more than spending time with him. It was a hard pill to swallow, and sometimes it made him sad, but Kacchan always knew how to make him feel better. 

Months passed and it was becoming increasingly difficult for Izuku to hide his love for his hero, especially when the man had taken up the habit of greeting the greenette with a kiss that always left the teen blushing and internally begging for more. 

Just like today.

~1 Month Before UA Exam~

“Sweetheart! I’m home!” Katsuki calls out, walking through his front door, tiredly kicking off his work boots, having already changed out of his hero costume before leaving the agency. 

“Hey, Kacchan!” Izuku cheers as he sets aside his new laptop, courtesy of Kacchan, and runs to embrace the hero. 

With a proud grin, the blonde scoops the teen into his arms and leans in to press a chaste kiss on chapped lips, delighted when he sees that familiar blush covering freckled cheeks. Gently setting the boy down. 

“How was your day?” Katsuki asks, guiding Deku to the bathroom, the hero wanted to take a shower and he’d be damned if he didn’t have his beauty shower with him. 

“It was okay. I’ve been sketching up some changes to the new gauntlet design I’ve been working on.” Izuku says, subconsciously already stripping, already used to bathing with the man whenever he was led to the bathroom. Something that had been strange at first and made him a little uncomfortable, but the love and praise he received from Kacchan - along with the tender touches - made it easy for him to accept the new norm.

“I was surprised to get your text that you were coming over tonight, since it’s a school night.” Katsuki says, turning on the water, already naked. He’d noticed over the last few months, as UA’s entrance exam neared, Deku had been spending more time at his place than at home lately, further confirming he’ll have no problem buying the greenette from Inko. 

Izuku’s pushing off his boxers when the blonde asks and his calm demure instantly melts away, replaced by a pained frown. Katsuki immediately notices this and steps away from the shower stall, and comes to kneel in front of the gloomy teen, his heavy flaccid cock swinging between his legs, an action that directly draws the attention of emerald eyes, who in turn starts getting hard at the erotic sight. 

“Mom asked if I could stay with you for a few days…” Izuku says, glancing away, ashamed at the arousal curling in his stomach. ‘Kacchan isn’t something that I can have… Why do I keep forcing my inappropriate thoughts onto him?!’ “So, can I stay, Kacchan?” Doe eyes flicking up sheepishly. 

‘Fuck, he’s too cute for words.’ Katsuki thinks smugly, reaching out to cradle soft, freckled cheeks. 

“Of course, sweetheart, you can stay as long as you want. My home is your home.” He says, leaning in to place a kiss on rough lips, but he doesn’t stop at the sweet peck he usually does. The doubt in his Deku’s head needs to be destroyed, there needs to be /no doubt/ in the teen’s head that he belongs to Katsuki: body, mind, and soul. 

Izuku squeaks when a hot tongue forces past his loosely sealed lips and tangles with his own, and instinctively his hands reach out to wrap around the blonde’s neck, holding on tight when he’s lifted, still lip locked, and carried towards the shower. 

“You’re such a good boy. So sweet and cute, I just wanna eat you up.” The hero says, huskily, in the greenette’s ear as he grabs the luffa and starts washing the fidgeting teen, kissing each freckle and nibbling along Deku’s jaw and neck, the boy still in the blonde’s arms, his still scrawny legs trying to wrap around the man’s toned waist, whimpering whenever the now hard monster cock moves against his dwarfed cock each time Katsuki washes a new part of him. 

“Kacchan.” Izuku moans through a bitten lip, trying to stifle the lewd noises, but he’s failing miserably. 

“Don’t stop those sounds, sweetheart, love all the little noises you make.” Katsuki chuckles, low and husky, pulling back to look into half-lidded lust clouded emerald eyes, smirking triumphantly as he brings his focus back to the task at hand, but not before he gives the aroused teen another sultry kiss. 

~

Deku’s sound asleep as Katsuki lay beside him, propped up on his elbow, the teen curled up against his chest with a small smile. It had been an hour or so since the greenette had fallen asleep and despite having worked a 12 hour shift, he couldn’t sleep, at least, not yet. 

“You’re so beautiful, Deku. I don’t know how you expect me to keep my hands to myself when you’re laying next to me like a full course meal. All pink from our shower and wearing the pajamas I bought you.” He whispers, greed heavy on his tongue as his eyes run down the boy’s body, loving the sight of the little thing in a red silk slip, lace making up the top part, it's practically see-through so the blonde can easily see those dusty pink nipples through the lace. 

Katsuki licks his lips, smirking seductively, sitting up on all fours to move down the bed and between the greenette’s legs, sitting back on his knees, he pushing up the dainty fabric, positively smug that he’s gotten Deku trained so well that the teen doesn’t even wear underwear to bed anymore. 

He lets his fingers slide across soft skin along Deku’s hip and thighs, his heart race with excitement. It’s more than easy enough to get the greenette in any position he wants, and tonight, Katsuki wants to taste his beauty. 

Kneeling with his top half over the bed, the blonde pulls the teen towards him, short legs hanging over his shoulders as he takes that small cock into his mouth, happy to find Deku tastes better than he thought. He hums when the cock fills out almost instantly on his tongue, a peacefulness settles over him as he pulls out his phone and answers a few emails, all the while sucking the teen’s cock until Deku cums, his entire body trembling and moaning soft ‘Kacchan’s in his sleep. 

It turns out to be a very productive night, especially after Katsuki stands and lifts the greenette’s limp body enough to thrust his cock into that loose hole, sighing in relief as he fully sheathes himself in the delicious heat, fingers digging into Deku’s hips. 

“Fuck, no matter how much we do this, you still feel fucking amazing.” Katsuki groans, giving a few small thrusts before he starts fucking Deku in earnest. Satisfied when the teen moans weakly, legs trembling, splayed out. “Even asleep, you love having me inside you.” He chuckles wickedly, jackhammering the poor greenette into the bed, that perfect hole massaging his cock perfectly. 

His rhythm grows erratic as the coil in his gut tightens and his balls draw up tight, he’s going to cum soon. With a few more thrusts, Deku clamps down around him as he cums, a splatter of white across a freckled belly and heaving chest. 

“Deku.” Katsuki growls, low and feral as he fills the beauty with his seed, pressing a hand down hard over the small bulge of the greenette’s belly, moaning sinfully when he feels the pressure on his cock. Yes, this is the perfect way to end the day. 

~Next Day~

Once Katsuki dropped Izuku off at school with a goodbye kiss, he headed to his next stop before going to work; the Midoriya home. 

After spending more time parenting and having to get used to raising a teenager, Inko had switched her schedule so that she worked nights and was home during the day, for more ‘personal’ time, and it looks like today is no different. 

Outside the apartment building was a stranger's car Katsuki’s seen a few times over the last month. Ignoring that, he goes up the stairs and knocks on the door with a bored expression. 

“Now’s not a good time, please come back later!” Inko’s voice shouts from inside the apartment, but he’s not leaving until he gets what he wants. 

“I’m not leaving until I speak with you, Inko.” Katsuki shouts back, and instantly he can hear her racing towards the door, stumbling to likely get dressed along the way. 

“Katsuki!” She shouts, yanking the door open, staring up at him with fearful eyes, panting, clothes hastily thrown on, hair a complete mess. “How’d you know I’d be home?!” 

“I’m not a fool. I’m here to tell you Izuku will be accepted into UA and I want him to move in with me.” He says, looking down at her with an unreadable expression. 

“What?” She asks, scared of what this means for her future. 

“I know you have no interest in taking care of him how he deserves, but I am. I’ll give you whatever you want to have him. I’ll even pay to send him to UA.” 

“You want to… buy him from me?” Inko asks, confused on why he’d want to be weighed down by Izuku. 

“Call it what you will. I’ll even pay to have people come by /today/ to pack up his stuff and moved into my place.” Katsuki says, not missing a beat, enjoying how her jaw drops and something sparkles in her eyes, be it greed or hope. 

“You’d take him, forever, put him through school, and pay for /everything/ and I’d not have to do a thing.” 

“That’s what I said.” He grunts, crossing his arms, annoyed. “Just tell me what you want so I can claim Izuku and you can get on with your life.”

“I want XXXX and a new house far from here!” She blurts out, picturing the life she’s always wanted. 

The hero analyzes her for a minute, thinking about the request. She wasn’t asking for an absurd amount of money, but the house could be a problem. 

“I’ll contact my realtor and tell them the budget. You will /not/ go over it by even a cent.” He warns, staring her down. “Deal?” 

Inko looks back at the man that should have been Izuku’s father, but was married, an old childhood friend, looking for his approval since the house would be near his work so they could be together. He looks at her flabbergasted and beyond joyful at being able to have her whenever he wants. Eagerly, he nods. 

“I’ll start packing now, you have a deal.” 

‘Everyone /always/ has a price.’ Katsuki thinks incredibly smug and proud, nodding before turning around and leaving, ready for the next stage of his life, and happy to end this chapter.

Chapter Text

The entire day Izuku felt like something was happening, but he couldn’t put his finger on what or why. When school was over he tried calling his mom, to see if he could grab a few things, but before it even gets a chance to ring, the operator comes over the line telling him this line has been disconnected. 

He stops in his tracks, horrified, ghostly pale, half way down the hall. 

‘Did something happen to mom?! Is she dead, or did she- no, she wouldn’t! Right?’ He thinks, hoping this is all just a nightmare. Izuku’s so lost in his fears that he doesn’t even realize everyone’s gone and he’s all alone, until heavy boots come thundering down the hall, paired with anxious breaths. 

“Izuku?! Sweetheart?! Where are you?!” Kacchan shouts, frantic, coming around a corner, looking around desperately for him. 

“Kacchan? What is he doing here? He usually waits for me out front.” Izuku mutters, turning towards the hero, gasping when worried scarlet eyes land on him and the man lets out a sigh of relief. 

“Izuku, what the hell?! Are you okay?! I’ve been waiting for you for half an hour, I was so worried that something happened to you?!” Katsuki shouts, rushing to the teens side, dropping to his knees and sliding across the floor, stopping in front of the startled, teary eyed boy. 

There are so many things Izuku wants to ask, but his body acts first. He falls into the blonde’s arms and sobs. 

“Mom’s phone is…” He can’t even bring himself to say it, clutching tightly to Kacchan, burying his face in a strong chest. 

“Oh baby.” Katsuki sighs, relaxing a little. This is it, the moment when he’ll tell his beauty that they never have to part again. “She’s alive and safe, but… Izuku… you’re going to be living with me from now on.” He says it as gently as he can, leaning back to look at the teen, wanting to gauge his reaction. The shock on the greenette’s face was expected, but he can see joy in those glassy emerald orbs. “I already moved all your stuff into the penthouse, and maybe this will make you feel better.” He says, pulling an envelope out of his pocket and handing it to the confused boy. “I was going to take you out to a fancy restaurant and then give it to you.” 

Izuku takes the envelope with shaky hands and slowly opens it. When he sees what it is, he gasps. It’s a letter of recommendation to UA’s support department. 

“Kacchan-” He starts before his voice fails him and he lets out a whimper, his smile dropping. “You’ll never leave me, like mom, will you, Kacchan?”

“I swear on my life, I will /never/ leave you, not now, not ever.” Katsuki declares determined, sealing the declaration with a kiss. ‘You’re mine now, Deku, forever.’

~

Katsuki let Deku stay home the next day from school and he called in to work, taking a vacation for the first time ever. For the next week, he spent all his time at the boy’s side, something Izuku very much appreciated after the pain of his mother giving him up. 

The blonde absolutely /loved/ that the teen couldn’t go a /second/ without him being in his line of sight. Katsuki probably didn’t need to use it to his advantage as much as he was, but having the teen a flustered, horny mess as he took a piss, putting on a little bit of a show even though he probably didn’t need to, but he couldn’t help himself when seeing the little tent instantly growing in Deku’s pants. 

It wasn’t like he was forcing the small fry to do anything, in fact, he’d only started putting on a show the first week they’d started living together, and the depressed teen had finally looked up from his homework in the living room and freaked out when Katsuki was nowhere to be seen. The next thing he knew Deku was screaming his name and slamming all the doors open looking for him. When the bathroom door opened, he was just about to tuck himself away, but before he could do anything, Izuku leaped into his arms, crying saying he thought the hero left too. And Katsuki made him a promise then and there.

“No matter what, I will /always/ be with you, Izuku. Even if you want nothing to do with me, I’ll still desire you, and even if that means locking you up in /our/ home. We’ll always be together.” 

The declaration shocked Izuku to his core, and he had never felt more aroused. 

~Exam Day~

“Are you sure you got everything, sweetheart?” Kacchan asks, for the millionth time as they sit in the blonde’s car outside the UA gates. 

“Yes, Kacchan. I double checked before we left the house.” Izuku says with a gentle smile, hand on the door handle, he’s about to get out when he turns towards the hero, enjoying the calm demeanor and the look of something deeper he’s seen far too often that it’s shameful that he still can’t figure out what it is.

“I’ll be back exactly when it ends, waiting for you at the gates, okay?” The man says, intense scarlet eyes watching him closely. 

“Thank you, Kacchan!” He smiles, back to get out when he remembers he almost forgot something very important. “Oh!” He shouts, spinning around and planting a quick kiss on Kacchan’s lips before pulling back. “I’ll see you soon, Kacchan! Love you!” He calls out before getting out of the car. 

“Love you too, sweetheart! Do your best!” Katsuki shouts back with a proud grin. ‘You got nothing to worry about Deku, even if you nearly fail, you’ll still get in, and become the best support tech ever. Then we’ll own the agency together and get married. Maybe I’ll even reach out to the Straus siblings and have them change your cock to a pussy, and put a baby in you. Hmm, yes that sounds perfect.’ He ponders with a smug smirk as he drives to the agency to do some back log paperwork until the teen’s done. 

“Hey man! How’s married life?” Charge Bolt says, walking over the explosive hero who just walked in through the agency doors. 

“If you wanna know so much, then maybe you should just ask Ears to marry you already.” Katsuki snarks back, walking right past the now pouting blonde. 

“You don’t gotta be mean.” The electric blonde sasses before heading back on his way. 

Paperwork has always been tedious in Katsuki's opinion, but right now it was the perfect thing to keep him busy waiting for his beauty to get done with his exam. When his timer goes off he’s bolting out of the agency and heading right back to the school. 

“Kacchan!” Deku shouts with a bright smile as he jogs towards the blonde waiting for him, leaning against his car at the front gates. 

“How’d it go, sweetheart?” Katsuki grins, opening his arms for the teen to jump into, which the greenette eagerly does, but as the boy hangs off him, with his head buried in the blonde’s neck, scarlet eyes can see a brunette girl standing maybe 50 feet from them, a death grip on her bag strap, sending him a hateful glare. ‘Oh, what do we have here?’ He ponders, glaring right back at her. 

“It was amazing! I even made a new friend!” Deku gushes, not letting go of the hero as he turns around and opens the passenger door, gently depositing the teen down, who was still talking about his day. 

Katsuki drives away with the girl still glaring at him, and something deep inside tells him she’s going to be a problem.

~1 Week Later~

The blonde sat in the living room, sipping on a glass of whiskey as Deku sat at the kotatsu, wearing one of his old tee-shirts from his very first merch line, nose buried in his notebooks. They were having a comfortable night in, when his phone started ringing and the buzzer from downstairs went off. 

They had a package.

“Oi, sweetheart, can you go get that, I have to take this.” Katsuki says, getting up and heading for his office. The Hero Commission was calling him. 

“Yes, Kacchan!” Izuku says, happily, his head snapping up from his designs with an eager to please expression before he hops up and heads to the door. 

“What do you want?” The blonde says into the phone, closing the office door. What the man on the other end said through the phone had him tensing and glaring murderously at the wall. ‘This is going to put a hitch in my plans.’ He thinks, giving his response before hanging up, just in time to hear the front door slam open, and Deku shouting into the penthouse with an excited gleefulness. 

“Kacchan! Kacchan, I got in! I’m going to UA!” The greenette cheers, jumping around in circles. Izuku can’t believe he got in! If only his mother had cared enough to enjoy this success with him, but at least he has Kacchan, his hero, and that’s worth more than anything in this world. The teen finally spots the blonde coming down the hall and breaks into a sprint to him. “I got in! Can you believe it, Kacchan?!” 

“I never doubted you for a second, sweetheart.” Katsuki says, but there’s something wistful in his gaze and a heavy weight on his tongue. 

“Kacchan, what’s wrong?” Izuku asks, concerned, reaching up - as much as he can - to cradle blonde stubble cheeks, eyes filled with worry. 

“I have to go away for a mission and… I might not be back in time for your first day at UA.” 

“What?!” 

Chapter Text

“Sweetheart, please believe me if there was any other way, I’d do it.” Katsuki pleads, kneeling beside the bed where a pouting teen was curled under the covers of their bed, whimpering in distress. “Baby, please, understand, I have to go. I don’t have a choice.”

Izuku knows he’s being ridiculous, but he doesn’t want Kacchan to leave him. He doesn’t want to be alone. 

“What about me? What am I going to do?” The greenette mumbles, his voice barely audible through the comforter. 

Katsuki sighs in relief at finally hearing his beauty’s voice after an hour of silence. Slowly, he pulls back the covers to see a sniffling, tears eyed face, scarred emerald eyes meeting his affectionate ones. 

“I promised you, didn’t I, that I’d always come back to you, and this isn’t going to break that. And to make sure you’re taken care of and safe, I’m going to assign the squad to take care of you. One of them will be here every night, /sleeping on the couch/, and taking you to and from school. You will /not/ go anywhere without one of those losers with you, understand?” The hero says confidently, sitting on the bed and pulling the small teen into his lap, pulling them chest to back. He runs his hand up the oversized shirt the greenette is wearing to settle on a tiny waist.

“You promise?” 

“I promise.” Katsuki coos, feeling Deku shiver under his fingers before he gives the small teen a kiss. Holding the greenette close the entire evening.

~

Getting Deku to sleep had been a harder challenge than he anticipated. Since Katsuki was leaving the next morning, the teen didn’t want to lose any time with him before he leaves, but the teen could only hold out for so long before the sleeping pills in his nightly tea finally took him under. 

“Oh, my sweet angel, I’d never leave you forever.” Katsuki whispers, rolling the greenette out his back, slowly rolling the frail nightdress up and off the boy. Tonight, he’ll make sweet, sweet love to his baby before he has to leave. 

~

Izuku was never really alone, but with his Kacchan gone, he felt alone. 

Every night Kirishima would make him dinner and make sure the penthouse was secure before going to bed on the couch, then take the teen to school. During the weekend, Mina would be the one watching him, taking him shopping and any place he wanted to go. Spending time with her was like hanging out with a big sister. A big sister that loved dressing him up in lingerie for his ‘husband’, something Izuku still didn’t understand was why she kept teasing him like that. 

It hurt starting his first day at UA without Kacchan, but Izuku didn’t let that stop him from having a good time. He met a lot of new people, even making a few friends. Specifically, two students in the hero course; Shoto Todoroki and Ochako Uraraka. 

~1 Week into School~

“Midoriya!” 

Izuku was just leaving school when he heard his name, stopping in his tracks and turning around. 

“Oh, Uraraka! How are you today?” He asks with a friendly smile, seeing Shoto not far behind. 

“I’m great, even better now.” She purrs, smiling wistfully at him, her cheeks slightly darker than usual. 

“Oh?” Izuku asks, tilting his head a little in confusion before his eyes flick to the dual colored boy. “How are you today, Todoroki?” 

“I’m doing very well, thank you for asking.” The Todoroki heir says with a small grin. 

They two have been seeking Izuku out every day; before and after school, even during lunch. Something that Kirishima has been taking notes of for his bro. 

“Can I help you guys with anything?” The greenette asks as he pushes open the front doors, other students surrounding them. He still can’t figure out why they keep wanting to hang out with him since they were in the hero course. 

“We wanted to know if you wanted to go to the movies with us.” Shoto says, taking the opportunity since the brunette was still staring and smiling dreamily at the greenette. 

“That’s very kind of you, but-” Izuku starts, looking off into the distance and seeing the red headed hero waiting for him; looking at something on his phone that’s head up, along with a tiny antenna pointed their way, earbuds in the man’s ears. 

“But what?” Ochako asks, snapping back to reality, frowning. “Don’t tell me you can’t because of that /hero/. He’s not even here! He’s away on a mission, so why can’t you hang out with us?” She asks, slightly offended. Izuku’s turned them down every time, and all because of someone that wasn’t even here, or at ‘home’, waiting for him. The whole thing was creepy and becoming increasingly disturbing. 

Izuku flinches away from her, pulling on his backpack straps, curling in on himself a little. 

“I was going to say I have a test to study for.” He mumbles, looking away, his previously happy demeanor souring quickly. 

The brunette cringes, realizing her mistake, her classmate also seeing it and jumps at the opportunity. 

“Would you like some help? I’d be happy to study with you.” Shoto says, hand on his chest as gives the greenette a sincere tiny smile, charming as always. 

She turns to glare at him, before grabbing Izuku’s bicep and pulling him against her chest, batting her eyelashes at the flustered boy, the greenette feeling incredibly uncomfortable. 

“Maybe he’d rath-” Ochako says, but Izuku interrupts her, pulling away and walking backwards towards the now angry looking hero. 

“Thank you, but I’m fine. You guys should really be training anyway. I’ll-I’ll see yo-you later.” Izuku stutters out, before swiftly retreating, his heart racing in anxiety. When he finally makes it to Kirishima, he lets out a deep breath, finally relaxing a little. “Sorry about the wait, Kiri, they wouldn’t leave me alone.” 

“It’s okay little Bakugou. Do you want me to tell them to back off?” the red head asks as he escorts the teen to his car, looking over his shoulder to make sure they weren’t being followed. It’s happened more than once that the brunette would chase after them to try and come with. 

Izuku’s cheeks flush at the familiar pet name. He didn’t know why the ‘Bakusquad’ kept calling him that, but he assumed it was because they thought of him as Kacchan’s adopted son, which hurt as much as actually being rejected by the explosive hero, where he’s sure they got the idea from.

“N-no.. I’m su-sure they’ll back off on-once Kacchan gets ba-back.” He says as he climbs into the car and buckles up. 

“I’m that’s what you want.” Kirishima says hesitantly, looking out the corner of his eye at the greenette. 

For the next 2 days they don’t speak anymore on the subjects. 

As the days pass, the squad can tell Izuku’s struggling with being apart from his Kacchan. These last few days have been even harder for him. So, to help the teen relax, Denki called the whole squad together for a private party, and none of them had any qualms about letting 14-year-old Izuku drink. 

~

Izuku was sitting in his room, cuddling Kacchan’s pillow with one of the blonde’s dirty gym shirts, hiding under the covers looking through pictures of the man on his phone when the door burst open, startling him right out of bed, his head shooting up to find who it was. 

“Ashido?!” He exclaims, his shock melting away to annoyance. “What are you doing?” 

“I’m here to drag your butt out of bed.” She says proudly, hands on her hips. “You’ve been cooped up in here all day, and every day after school for the last week. Come on, let’s have some fun!” She says a little kinder before ripping him from the bed and dragging him down the hall into the living room. 

“Mido! So happy you’re joining us!” Sero shouts, waving his beer, smiling. 

“Wait, I thought he was a Bakugou now?” Denki whispers to him, or at least, he tries too. The already buzzed blonde might as well be shouting over the steady music filling the background. 

“Wha- I don’t- I shouldn’t-” The greenette tries to say but before he can, Sero smacks Denki over the head. 

“You idiot! Bakugou hasn’t given him the ring yet.” The dark haired man says, rolling his eyes like he didn’t just explode the teen’s mind. 

“R-r-ri-ring?!” Izuku squeaks, boiling hot, shoulders up to his ears, sinking into his sweat shirt. 

“Ignore them, darling.” Mina chuckles dryly with a forced smile before she turns to glare at the idiots. “Don’t listen to them.” She insists, pushing him towards the bar counter where there were a few premade drinks. 

“That was a secret!” Jirou scolds, whispering to the now embarrassed duo. 

Izuku tries to hear the rest of the conversation when Kirishima buts in, and gives them his own lashing, but Mina’s talking his ear off, showing him all the different drinks, and when he hears the words ‘husband’, ‘wedding’, and ‘Bakubro had something special planned’ he down the first drink he grabs and starts coughing as the alcohol burns his throat. 

The rest of the night goes about the same way. Every time Sero or Denki mention something they shouldn’t, Izuku does a shot, unable to handle the emotions and longing overwhelming him, and soon he’s ‘dancing’ to the stereo music on the coffee table, completely drunk. 

Everyone was so drunk, that no one noticed the front door open, or a massive blonde man standing at the edge of the room, watching with possessive and hungry eyes as Izuku slowly stripped off his clothes, not realizing how sensual his little performance looked to the group of adults around him. Or how his strip tease was quickly making the blonde’s pants tighten and his self-control wane.

Chapter Text

Every video, picture, and voice message his group sent to him of Deku made him work that much harder to get home to his baby. When he started to get more videos of those 2 heroes in training trying their luck to steal the greenette away, he nearly blasted back home to put them in their place, but then he got the last video, Deku realizing what they were doing and choosing Katsuki instead. Of course, he wasn’t a fool, he knew the fight was far from over, especially with that stupid brunette girl. 

Finishing his mission early had proven to be quite beneficial. 

Shinso was just getting into the agency for his patrol when Katsuki waltzed over to him, the tired man getting his latest cup of coffee before heading to the locker room to get changed. 

“I need you to do something for me.” The blonde says, standing in the doorway of the lounge. 

“What’s it this time?” Shinso asks with a tired sigh, turning away from his prized coffee maker towards the stoic faced man. 

“I need you to ‘talk’ to a hero in training at UA, and make her stop pursuing Deku.” 

“Ah, I see. Someone’s trying to take your plaything away from you?” The purpled haired man smirks, turning back to his task. 

Katsuki grits his teeth, tsking as he glares the cocky man down. 

“Izuku is /mine/.” He growls. 

Shinso nods, watching his coffee pot fill. 

“Name.” 

“Ochako Uraraka.” 

“I’ll make sure it’s done. She’ll lose all interest in your prized possession.”

With that done, Katsuki turns and leaves, because he had somewhere he needed to be, and when his phone vibrates with a new message, the present waiting for him has him blasting out the nearest window towards his home.

~

When Izuku finally noticed Katsuki’s return, it was when he spun around, away from the door, and warm arms wrapped around his torso, pulling him into a chiseled chest, his ass the perfect height to rub against something he very much wanted to feel more of. 

At first the teen was stunned and his heart clenched with fear, but then the sweet smell of nitroglycerin wafted over him, instantly relaxing all his muscles. 

“Kacchan, welcome home.” He purrs, eyes half-lidded as he looks over his shoulder, smiling sultrily, melting into the tightening embrace, grinding his ass against the massive bulge in his hero’s pants. 

Katsuki can tell just how drunk Deku is when that perfect bubble butt grinds against his aching cock. Usually the teen would jump away, embarrassed of his body’s reaction to him before rushing off, but the blonde wasn’t going to look a gift horse in the mouth. 

“Sweetheart, fuck, I missed you.” Katsuki groans, his hands flat against the greenette’s stomach and hips, allowing him easy access to push the sweatpants aside, letting the hand resting on tiny hips slide beneath the waistband and tease Deku’s small erection with his fingers. 

“Kacchan?” Izuku whines, his hands shooting up instinctively to grip the hero’s shirt and hair, trying to pull him closer. His mind was filled with fog and everything almost felt like a hazy dream, and in his dreams, he didn’t hold anything back from his Kacchan. 

“Good to see you home, Blasty. Izubabe missed you terribly.” Mina giggles, sitting in her husband’s lap, the redhead moaning into her neck as he kisses along her neck, squirming under her as she warms his cock under her skirt. 

Katsuki smirks wickedly, about to say something when he feels Deku tense against him, the teen’s face paling and eyes clearing up. ‘No, this won’t do.’ He thinks, realizing the greenette was sobering up upon realizing they weren’t really alone. 

The blonde snaps his fingers, and immediately a drink appears in his hands. He feeds it to the teen, Sero standing nearby, another cup in hand. 

2 cups later, Izuku’s black out drunk, body swaying loosely, face absolutely debauched. Katsuki doesn’t waste anymore time, he’s home and he misses his sweet baby greatly, and his tight hole. 

With agile hands, the explosive hero spins the teen around - who’s still standing on the coffee table - and presses their lips together in a sloppy open mouth kiss. Katsuki’s tongue shoots into the boy’s mouth, drinking down sweet whimpers and moans as small fingers loosely tangle in his hair. 

“Get it Bakugou!” Denki whistles from the background as Katsuki scoops up the greenette and moves them to another couch, only to once again spin Izuku around. 

Izuku cries out, reaching desperately for him, tears building, not wanting Kacchan to leave him again. 

“No, Kacchan, please, don’t leave!” He sobs, but when he’s bent over the couch armrest, he moans when the warmth of his love’s body returns to rest against his back. 

“Don’t worry, baby, I’m never leaving you.” Katsuki growls, nipping at a red ear before he sets his sights on marking that pretty freckled neck. 

When Deku’s clothes get in his way, the blonde snarls, pulling back to make quick work of stripping the teen, leaving the boy naked against the couch. He can’t care less of the extra’s watching him mark up the cute little thing with his teeth and fingers. 

Katsuki doesn’t have any lube on him and he knows he should go grab the bottle in the bedroom, but he’s too eager to get his cock inside his beauty. 

“/Suck/” He orders Deku, sticking three fingers inside the teens open mouth, cutting off a cry of pleasure in the process as Katsuki gets a taste of his nerd. 

With his other hand, he slaps Deku’s bubble butt before spreading the cheeks, smirking smugly when he smells the district of his soap and could see the reminisce of red around the rim, allowing him to easily decipher that the greenette’s been making use of the dildo he stashed under their bed. 

“Such a naughty baby, touching something that doesn’t belong to you.” Katsuki taunts, sinking his teeth into plush skin, feeling the small body under him shiver and Deku gurgle back a whine. “This hole is mine. This body is mine. You have no right to touch it without my permission.” He warns, giving one more bite before tracing the tainted hole with his tongue. 

It’s been so long since he’s eaten his beauty out, he forgot how warm the teen is. With a practiced tongue and fingers, Katsuki gets to work stretching the boy as he tongue fucks him, his fingers scissoring open the hole. 

“Damn, Bakugou’s going to town on the little man.” Sero chuckles, sipping on his beer, looking at the crying, squirming greenette before his eyes flick to Jirou fucking herself on a oversensitive Denki, and Mina making Eijiro fall apart under her as she finally starts bouncing. Damn, he needs to find someone. 

Dangerous scarlet eyes flick to the Hispanic man, glaring, warning the dark-haired man to /shut up/ as he moves his tongue just right to make Deku scream, body arch up, glassy eyes wide before rolling back, and his body shakes, then he clasps back against the couch again. 

“Fuck, it’s been a while, sweetheart, since I’ve made you cum just my tongue.” Katsuki smirks, beyond smug as he slowly stands, unbuckling his belt, then popping the buttons and undoing the zipper, eyes never once leaving Deku’s sweaty, quivering body. 

His smirk goes downright wicked as he pulls out his cock and gives his dry cock a firm stroke before parting the freckle asscheeks with both hands and snapping his hips forward, thrusting balls deep in a simple motion, pulling another scream from the teen. Yes, he’s positive his baby won’t be walking straight, or at all, for quite some time.

~

Ochako didn’t know what she was doing wrong. She was doing everything her friends told her too! So why wouldn’t Midoriya give her the time of day? 

She was sitting at her desk in her room when her mother called her name, breaking her from her brainstorming. With an annoyed groan, she rises and heads down stairs, surprised when she finds a strange man with purple hair sitting at the table with her parents, both looking like they’re in some sort of trance.

“Mom? Dad?” Ochako asks, concerned, slowly walking towards them. 

“Ochako, dear, this man would like to ask you a question.” Her dad says, smiling dully at her. 

“Okay?” She says, confused as she comes to stand at the other end of the table. 

The mystery man grins at her, raising his hands in surrender. 

“Don’t worry kid, I’m from UA. I’m the hero NightHide, I’m here to talk to you about school.” The stranger says, and something clicks in the back of her brain. She’s seen his face before, he’s one of the underground heroes she’s seen pictures of during Aizawa’s description of different jobs heroes have last week. 

“Yes, I’ve seen your picture during our lessons.” Ochako says, and suddenly her mind goes blank and darkness takes over.