Archive of Our Own ^beta

Chapter Text

Aizawa looked down at the child in front of him, feeling a little lost on what to do. Yes, he was a teacher, but that didn't mean he was equipped with the knowledge to take care of kids who were younger than his usual students.

With a sigh, he picked the crying child up, gently petting his fluffy hair. "Hey, it's alright. No need to cry." Thankfully, they were alone in the gym. The child in his arms was no one other than Shinsou and they were about to start training, when the teen...shrunk. Physically and mentally if he guessed correctly.

He had been surprised, to say the least, but he had seen weirder transformations thanks to the wild variety of quirks he's encountered during his jobs.

"Do you remember what happened and where you are?" He frowned when Shinsou shook his head. It was going to be more difficult to solve this then and he doubted any other teachers would still be in the school building. There was the option of calling Shinsou's parents, but he was more than aware of their strained relationship.

There were probably even more options that would make this easier for him, but he was honestly just tired. The most logical thing to do would be to head back to his dorm and let Shinsou sleep in the bed he had used for Eri before. Now the girl had her own room.

-

On the short walk back to the dorms, Aizawa managed to figure out that this younger Shinsou had no memory of anything that happened after his ninth birthday. Shinsou had explained, in a surprisingly monotone voice for a child, that it felt like he had just woken up in an entirely different place.

Aizawa noted that Shinsou also seemed very calm, but the kid explained that all he missed was Truffles, his cat. Aizawa could relate to that.

Thankfully, they didn't come across any over enthusiastic students. As much as he loved all of the kids in 1-A, sometimes it made his job so much more difficult. He did notice that the light of Todoroki's room was still on. He'd have to talk to him about a healthy sleeping schedule, since it was already past 11pm on a school day, but.. Well, he wasn't really the right person for that now, was he?

Once they were in his room, he opened the doors of his closet. One side of his closet was very pink, leftover clothes from when Eri slept here, but he wouldn't give a young boy a Mew Mew Kissy Cutie t-shirt.. Though Shinsou would have to settle for pink shorts that were Eri's size, considering anything his size would easily slip off Shinsou's small frame.

He handed the boy the shorts and one of his smaller black t-shirts. "Do you need help changing?" He asked in a soft voice, ruffling Shinsou's unruly purple hair. It was a little shorter than what he was used to, but just as fluffy. The boy nodded.

Without much struggle, he managed to undress Shinsou. It felt.. a bit strange, but he was just helping a small child. Normally he wouldn't do anything like this with his students, but this was different.

Yet his gaze still drifted down when Shinsou was completely bare. His face was burning with shame, but he couldn't look away. He was also just a bit curious, because.. Shinsou didn't seem to have a dick. It was probably just a bad excuse to justify looking, but he had to tell himself something.

When he managed to tear his gaze away, he noticed that Shinsou was looking at him expectantly. Big purple eyes, full of childlike wonder. He felt something warm in his stomach stir from the pure look of admiration plastered on the kid's face.

Right. He was supposed to be dressing this child.

With a bit of hesitation, he helped Shinsou get into the t-shirt, the fabric coming down to his knees. It was really adorable and Shinsou seemed to love it too. "It's like a dress." There was no excitement in his voice, but the glimmer in his eyes was unmistakable.

He wanted to keep going, but before he could grab the shorts, Shinsou decided he had enough of standing still and jumped onto his futon. The frame creaked at the sudden weight, but thankfully managed to hold the kid. During the process, however, Shinsou's shirt had hitched up, exposing the boy's thighs and pussy.

He looked again.

Like a predator stalking its prey, he approached the futon and kneeled on the mattress. He placed his hands beside Shinsou's head and leaned down, pressing a kiss against the boy's lips. He was a little afraid of the reaction he'd get, but Shinsou just giggled. "Your beard tickles." Hm.. Seemed like he was in the clear.

Shinsou's frame was so much smaller than his. All thin, pale limbs, bruises and scratches all over. Probably from playing outside. Something about the kid's innocence made him feel like he was losing control. Yeah. That's why one of his hands wandered towards Shinsou's thigh.

"I want to play a game, but don't worry. You just have to lay still. I won't hurt you." Aizawa whispered softly, kissing Shinsou's cheek. The boy nodded and stayed still. "Good boy." Shinsou preened at the praise.

Aizawa's gaze slid down, once again, his hand slowly creeping closer to Shinsou's pussy. He bit his lip, his finger sliding between soft, bare folds. This was so wrong and he should stop now, but he couldn't. He lowered himself onto his elbow, so it was easier to keep kissing the boy, now capturing his lips again.

He felt Shinsou squirm underneath him, a small leg accidentally brushing against his cock, which was straining against his pants.

Wrong wrong wrong.
But instead of pulling away, he pushed a finger into Shinsou's tight cunt. "Fuck." He breathed out, against kiss swollen lips. Thankfully, Shinsou didn't seem to mind his ministrations all too much, just expressing enthusiasm and curiosity about what was happening. He wasn't sure if this felt good for the boy, as long as it just didn't hurt.

He gently pressed a thumb against Shinsou's clit, shuddering at the soft whine he got in response. Since he didn't hear any protests, he kept pushing and rubbing, trying to press his finger against Shinsou's sweet spot at the same time.

"W-wait, I.. Sensei, I have to go pee." Shinsou suddenly muttered, placing his small hands on Aizawa's shoulder and attempting to push him away.

But, Aizawa didn't budge and kept up, enjoying how Shinsou was clenching around him. "It's okay. Let go." Soon after those words left his mouth, Shinsou yelped and liquid trickled down his hand. After a few seconds of silence, he quickly pulled away, almost like he had burned his hand.

What did he do?

Fuck.

He needed to get Shinsou out of here, now.

He made quick work of cleaning everything up and actually finished dressing Shinsou this time.

"Why are you acting so funny, sensei?" Shinsou asked softly, hoping he hadn't done anything wrong. Sensei didn't seem mad, but just a little scared..

"It's time for a sleepover. I'm taking you to one of my other students, Todoroki. I think he'd like to have you over.. He has a lot of siblings, so I'm sure he knows a lot of fun games."

Aizawa quickly pulled a backpack from his closet and shoved some more of Eri's clothes in it and held his hand out for Shinsou to take. "He's really sweet. You can trust me, alright?"

Shinsou, while still confused, got up from the futon, and grabbed Aizawa's hand. "Okay! I had a lot of fun with you too though, Sensei!"

Aizawa tried not to feel too disgusted with himself, but he was still hard. He'd have to take care of that problem later.. After he took Shinsou somewhere else. Somewhere safe.

Chapter Text

To say Todoroki was surprised when Aizawa knocked on his door after curfew was an understatement. The seemingly shorter Shinsou that was attempting to hide behind Aizawa's leg was even more confusing.

"Good evening, sensei." He greeted politely. "I'm sorry for staying up so late. I'll head to bed right now." But before he could close his door again, Aizawa had put his foot forward, stopping it in place. His eyes widened a little, but he didn't comment on the rather bold move of his sensei.

"I apologize for bothering you at this hour, but I need you to babysit Shinsou for a few hours. I'll probably be able to take him to Recovery Girl tomorrow morning, but he needs a place to stay. I have to go on patrol." That was a lie, but Todoroki didn't have to know that he was just so heavy with guilt that he couldn't stand to look at Shinsou's innocent face any longer.

"Okay." Todoroki said with a small smile. "I'll take care of him, Sensei. Goodnight." He gently grabbed Shinsou's arm and eagerly tugged the child inside. Despite not being the greatest with them, he liked children. During his license exam, he learned a lot about kids too. He had always wanted to be a big brother.

Shinsou, however, was less excited to be away from Aizawa. The older man had been so nice to him and now he was with a different stranger.. His hands were clammy as he looked around the traditional Japanese room, not sure what to do now. He wanted to argue and say he wanted to stay with Aizawa, but he was too afraid to speak. People..
got mad at him if he talked out of line. People were scared of his quirk.

"You want to be a hero, right?"

Shinsou looked up at the boy, Todoroki, and quickly nodded. Right! Aizawa had mentioned that this was a hero school! Wait… If he was here, did that mean he could go to this highschool if he was older too? Well, that was for when he was older. For now, there was an almost hero here in the room with him, ready to play!

"Uhm.. Sensei mentioned that you know fun games. Can we play one? I'm not really tired yet." He asked in a soft voice, a shy smile on his face.

"Yes, of course. I would love to. My oldest brother.. He always liked playing this game, where he would kiss me everywhere. I think he was supposed to be a doctor and he'd kiss all my injuries better, but sometimes I didn't even have any." Todoroki sat down on his futon and patted the spot next to him. "Please take off your clothes and lay down on the examination table."

Shinsou didn't know how fast to get out of his clothes. He threw the black shirt and pink shorts he had gotten from Aizawa onto the floor and jumped onto the bed. It was a little cold like this, all of his pale skin on display, but he could deal with it. He flinched when he felt an extremely warm hand on his thigh, but it wasn't unpleasant. He squeezed his eyes shut when Todoroki leaned over him, cold lips pressing against his cheek. He giggled at the feeling. "This is a silly game."

Todoroki pulled back immediately. "Do you not like it?" There was concern in his voice.

"No, I do! Sorry, I just haven't played something like this before. You can keep going."

"Alright. If you want me to stop, just tell me."

Shinsou nodded again, watching as Todoroki got up and kneeled down on the ground between his legs. He was a little confused as to why Todoroki would go down there, but he didn't mind it. Especially when Todoroki started kissing his tummy. It made his tummy feel all tingly, but on the inside.

It reminded him of being tickled, it also made him squirm, but it was nicer. He wanted to keep going and he was glad when Todoroki did, moving the kisses down to his thigh, and then his pussy. Goosebumps broke out all over his body, because he was still sensitive from when Aizawa had touched him there.

But it went from soft kisses, to licks and sucks. It wasn't bad, but just very overwhelming. His small hands reached out to hold onto Todoroki's white and red hair, whining softly. It felt similar to what Aizawa had done, but this was more.. wet. And when Todoroki sucked on the little nub, his whole body tensed up and he couldn't do anything about it.

Short breaths kept slipping past his lips, hips twitching up, grinding against Todoroki's face. He didn't mean to be so selfish and take his pleasure like this, because they were playing together and that meant sharing, but he couldn't stop.

He was smearing his slick all over Todoroki's chin, but it didn't seem like the older boy minded all that much, with the way he was still going at it.

Todoroki was really enjoying himself as well. The walls of Shinsou's pussy felt soft against his tongue and the slick was a little salty, but surprisingly nice. He had no qualms about getting as much as possible out of the boy.

He vaguely noticed that Shinsou was shaking, legs trembling next to his head. This usually meant the game was almost over, which was a shame, but it was bedtime anyway. But before he could actually finish it, Shinsou roughly pulled on his hair.

"Wait! I had.. I have to go pee real bad again! I don't want to make your bed dirty too, w-
But just like Aizawa had, Todoroki ignored his desperate warnings and kept going.

His thin thighs squeezed tightly around Todoroki's head, his small hands pulling even harder now. His body was shocking lightly, small spurts of clear liquid coming out of his pussy. "Ah! I.. I'm sorry, I didn't.." He whispered softly, tearing up. He was very overwhelmed, tired and embarrassed.. With the onslaught of pleasure now gone, those were the only three things he could focus on now.

Todoroki, seemingly a bit alarmed by the wobbly voice of Shinsou, quickly stood up and wiped his face clean with his sheets. Unhygienic, but necessary for now. "Don't cry." He said softly, laying down next to Shinsou and gently hugging him. "You did great. I had a lot of fun and I hope I made you feel better."

But instead of getting a proper response, Shinsou was already snoring. Todoroki smiled fondly at him and decided it was time to clean up. Without waking the boy up, of course. Shinsou needed plenty of rest, because he was sure the rest of the class would want to play with him too.

Chapter Text

Shinsou was nervously fiddling with the plushy cat he had gotten from the pretty girl, looking up at the two boys in the room with him. There was Midoriya, the green haired student with freckles, who could glow. And there was Iida, the blue one with glasses and weird things sticking out his legs.

They were both really nice, but being passed around was kind of strange. He didn't know any of the students, but they all seemed to really like him and wanted to spend time with him. He had tried to hide his disappointment when Todoroki wouldn't let him stay for more than one night, but he guessed it made sense. Heroes were busy, after all! He should be grateful that they were making time to watch and play with him!

"What would you like to do, Hitoshi-kun?" Midoriya asked with a bright smile, making him blush. He had enjoyed the games Todoroki and Aizawa played with him a lot, but he felt a bit too nervous to outright ask for something like that. So he just decided to do it differently, to make sure they'd all enjoy it and that he wasn't the only one taken care of.

"I… I want to thank you for being so nice to me."

Slowly, he took off his clothes.

Iida suddenly moved forward and grabbed his wrists. "Hey, hey, what are you doing? There's no need for.." Iida trailed off, not even sure what Shinsou meant by thanking them, but.. the boy was trying to take his clothes off.

Midoriya wasn't so hesitant, though.

Shinsou yelped softly as he was picked up by the other student and gently put on the bed. He was put on his hands and knees and he could feel the bed dip. Midoriya was kneeling behind him and pulled his shorts down.

He was… Excited. He shuddered when he felt two rough fingers slide between his folds, honestly a bit surprised by the enthusiasm compared to Iida's restraint and hesitation. He liked Midoriya's energy better.

"Fuck, Tenya. He's so wet already. It's okay if he likes it, right?" Midoriya muttered, shoving an already wet finger into Shinsou's cunt. "He's so loose." The idea that Todoroki, or even Aizawa, had been touching Shinsou like this before made his cock throb in its confines. The thought should be absolutely appalling to him. Shinsou had been turned into a small child, but.. a very cute one. An innocent boy with a pussy so slick and pink and pretty that no one could resist it. Right?

It wasn't his fault that he was so hard he could already feel beads of precum staining his shorts as he slowly fingered Shinsou open, the boy whining and panting, trying to keep up with his efficient movements. Right?

Iida was watching with an intense stare, his focus mostly on Shinsou's face and not what Midoriya was doing to him. Shinsou's mouth fell open with every moan that left him, drool leaking from the corner of his mouth. Iida was hit with the urge to gently wipe it away, so he approached the bed and did just that. But before he could pull away, Shinsou had wrapped his lips around his thumb and sucked.

Iida instantly pressed his thumb down against Shinsou's tongue, biting his lip and trying to ignore his growing arousal. This was so wrong. He shouldn't even be here, but he couldn't tear his gaze away from the pretty sight in front of him.

His free hand went down to his crotch, squeezing his cock through his uniform pants. Shinsou's tongue was warm and wet, and he desperately wanted to feel it.

Meanwhile, Midoriya had pulled his dick out of his pants, rubbing the tip between Shinsou's folds. "You.. You're soaked. I don't even need lube." He whispered softly, his hands on Shinsou's hips as he finally pushed into his pussy. He groaned loudly, trying not to squeeze too hard. He wouldn't want to leave bruises, because that would leave evidence. A reminder of what he was doing.. But fuck, it felt good. Shinsou was a tight, velvet heat around him, setting his nerves alight.

He wasn't very experienced with sexual activities, so his pace was clumsy and rather slow, but he also just didn't want to cum immediately. The sight of Iida shoving his cock into Shinsou's mouth wasn't helping. He let out a shaky breath and paused for a moment, having to catch his breath. Controlling himself was almost impossible.

Shinsou was trembling. He felt so full and breathing was getting hard with Iida's thing in his mouth, but he didn't hate it. His mind was a little woozy, but it almost seems like it made everything more intense. Midoriya was so deep inside of him, it caused his tummy to have a small bump. He had felt it with his hand earlier and he was eager to look, but Iida kept him firmly in place with a hand tangled in his hair.

They had stayed still for a bit, but eventually Midoriya started thrusting into him again. He moaned around the cock in his mouth, eyes rolling into the back of his head as the tip was firmly pushed against his g-spot.

He tensed up again, not being able to control his body as waves of pleasure washed over him. Midoriya kept his pace up, only slowing down when it became impossible to go any faster with how tight Shinsou was around him. Clear slick trickled down his thighs and onto the sheets, dirtying them with his release.

Shinsou wanted to apologize, but his mouth was still very much occupied- The taste was a little weird. Salty and slightly bitter, but not as bad as coffee or alcohol. He whined in surprise as he felt something wet and warm inside of his pussy, where Midoriya's thing was just seconds ago. Before he could question what it was, Iida did the same thing in his mouth. Sticky, salty liquid filled his mouth and throat, making him cough in surprise. He teared up as he tried swallowing everything, but it just made his need to spit it all out bigger.

Which he did when Iida held a hand up by his mouth and gently encouraged him to do so.
He missed the horrified look Midoriya and Iida gave each other.

What had they done?

While Iida stayed with Shinsou, Midoriya quickly got his shower supplies and some clothes, wondering if he could get rid of any evidence… and if he could ever look at Shinsou the same way again. He hadn't even used a condom..

But.. Shinsou seemed to like it. He even came. It wasn't.. that bad, right?

Chapter Text

Shinsou wiped purple locks out of his face for the tenth time that minute, his damp hair sticking to the skin of his forehead. Normally his hair was wild enough by itself to stay up, but after he showered, it got awfully flat and always got in the way.

Thankfully, the mean looking, blonde boy was willing to tie his hair up. He learned that the blonde's name was Kacchan, or that's what he thought, because Midoriya kept calling him that. It sounded really cute and he actually liked Kacchan a lot. The older student had gently brushed his hair and pulled it back into a small ponytail. Though he preferred his hair loose, this was a nice change. He couldn't tie his hair up himself and his parents didn't want to do it for him.

After getting a warm and freshly prepared lunch, Kacchan took him back to his dorm room. The red head, Kirishima, joined too. He was sitting on Kacchan's lap, curled up against him and playing Animal Crossing on Kirishima's switch. Kirishima sadly only had dogs on his island, but he guessed they were kind of cute either way.

Well, there was one bunny and he liked that one the most. He was called Sasha and he gave him a flower crown.

He giggled softly as Sasha put it on, squirming a bit in Kacchan's lap. He wanted to get more comfortable, maybe nap a bit, which wouldn't be hard. Kacchan was warm and had a very soft chest. Closing his eyes, he slowly felt himself drift away.

Kirishima chuckled softly, carefully taking the Switch. He saved the game and turned the console off, glancing over at Bakugou and Shinsou. "Awh, you guys look so cute. Didn't know you had a daddy in you." He teased, before his gaze finally went down a bit. Huh. "You're hard." He lamely commented, not sure what to think of it. Shinsou is cute, yeah… But not like that. Well, that wasn't what he was supposed to think, but Bakugou seemed to share his opinion.

If two heroes in training both had the same opinion about something, it couldn't be that bad.

Besides, Shinsou just looked so fucking adorable in those pink shorts and a matching pink cat t-shirt Momo had made for him earlier. Kirishima grinned and bit his lip. "You think his tits are as sensitive as yours?" He winced as Bakugou harshly slapped his shoulder.

"Shut the fuck up man, we can't… Do shit like that. You know that, right?" Bakugou muttered, gently patting Shinsou's head. He had expected the kid to have fallen asleep already, but no.

Shinsou sat up a bit straighter, straddling Kacchan's thighs. He lifted up his t-shirt. "You mean these?" He asked in a soft voice, eyes still a bit droopy. Kirishima immediately got closer, looking at his chest with wide eyes. He had expected Kirishima to touch him first, but he suddenly felt two, warm hands on his small tits. Kacchan didn't let him get adjusted, his tits being roughly massaged, thumbs brushing against his nipples.

"A-Ah.. It makes me feel tingly." Shinsou's tummy felt all warm again, his shorts sticking to his wet entrance. He could feel that something was poking him from underneath him and he moaned softly as he ground into it. He really wanted to feel good again and when he was with Midoriya this morning, it felt great when their private parts touched. He wasn't sure how it worked, but he was sure Kacchan and Kirishima knew. They were older after all.

And like he was reading his mind, Kirishima wrapped an arm around his waist to lift him up a bit and pull his shorts down. He didn't even notice it, but apparently Kacchan had taken off his pants and underwear as well, because when he got lowered down, it was straight onto Kacchan's cock. The sudden stretch felt a little uncomfortable, but Kirishima seemed to notice and made sure they didn't go too fast.

"Fuck, Kats. Do you think he could take us both? He took you so easily, I'm pretty sure he's secretly some kind of slut." Kirishima teased, stepping back for a moment to watch his boyfriend and their newly acquired toy.

They looked so hot together. Bakugou was still just calmly sitting on the bed, but he was still playing with Shinsou's tits, who was firmly sitting on Bakugou's cock. His dick twitched in his pants and he would love to join in. So, he approached the boys and stood behind Shinsou. He got rid of the clothing that constricted his erection and then reached down to rub a finger along Shinsou's entrance. It was stretched around Bakugou's cock, but… He figured he could fit in some more.

After making sure his finger was plenty wet from Shinsou's slick, he pushed his finger into Shinsou's pussy alongside Bakugou's cock. The blond muttered out a curse, while Shinsou whined softly, gently rocking his hips as he tried to get used to the feeling and chase some of that amazing friction.

"Hm, good boy. You're taking everything so well." Kirishima purred into Shinsou's ear, adding a second and third finger. He ignored the conflicting expression Bakugou gave him, though his boyfriend obviously enjoyed it. He just didn't want to get reminded of the age of the person they were doing this with. Not now. He could always regret this later.

Now, he just pulled his fingers out and replaced them with his own cock, sliding into Shinsou's deliciously tight pussy, groaning at the feeling of being held there in a vice grip together with Bakugou. He placed a hand on Shinsou's back to push him and Bakugou to lay down, making the angle easier for him like that.

"Come on, Ei. Stop stalling and fuck us." Bakugou breathed out, Kirishima nodding wildly. He held onto Shinsou's hips, missing the finger shaped bruises that were already there, and started thrusting. He didn't want to hurt the boy, but fuck, he needed to come so badly.

The bed slammed against the wall with every push forward of his hips, groaning loudly and nipping on the skin of Shinsou's neck, eager to leave marks. After getting into a slow rhythm, Bakugou joined in, moving his hips just as slow.

Even if they wanted to go faster, they couldn't. It was like Shinsou's pussy tried keeping both of them in. Bakugou finally joined in with the talking. "You're such a cockslut, not even wanting to be empty for a second, huh?" Bakugou grinned, shoving a hand between his and Shinsou's stomach, to press against the bulge on Shinsou's. "Fuck.. Ei, I can feel myself." He muttered, thrusting up again, once, twice, before cumming deep inside of Shinsou's pussy with a loud whine.

Shinsou followed right after, his whole body trembling with the power of his orgasm. It didn't help that Kirishima was still moving, pushing around Bakugou's cum inside of him. It made all kinds of lewd noises, making his face flush in embarrassment.

Thankfully, not much later, Kirishima came too, filling him up even more.

He yelped softly when he got moved around, Kacchan and Kirishima having pulled out and laying him down on the bed. There was cum dripping out of his pussy, but the two older students didn't seem to care. They just joined him in bed and held him close.

He was still a little confused about what happened and why they ended everything abruptly, but this was also nice. With a smile, he closed his eyes, already excited to play with all the girls later.