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Katsuki had seen Deku naked before, obviously.
When you grow up with someone, from diapers to high school, you see them at their best and their worst, from being a sticky, whiny brat to a fit, muscled, older brat.
So he knew, practically, that Deku’s body was different than his. Not that he gave a shit; other people’s situations were their business and wasn’t related to getting him to number one, so Deku looking different was just one among many pointless pebbles on Katsuki’s path to greatness.
That’s what he thought as a brat. What he thought up until halfway through his first year at UA, but he’d grown up since then, been humbled through sweat and dust, and he could recognize now, in his third year, that maybe Deku wasn’t just a pebble. Maybe he was walking on that path too, right next to Katsuki, despite all his bullshit.
But knowing that your childhood friend’s body was different than yours and really getting it were two very fuckin’ different things, it turned out.
‘Cause Katsuki had seen Deku naked, but he hadn’t really looked . Why should he, anyway. Sure, maybe the nerd had a hot body. He was gay as shit, he could admit as much. And maybe Deku’s personality wasn’t unbearable. Maybe they fucking got along and worked well together, whatever.
Katsuki didn’t care and wasn’t paying attention. He’d convinced his own damn mind of it.
He didn’t know who else in their class knew Deku was trans. All Might, obviously, was aware, had helped hook Deku up with resources he wouldn’t have had access to (or so he rambled at Katsuki); Round Face knew, having dated the nerd briefly in second year; and maybe Half n’ Half, since the bastard didn’t know how to keep his nose out of other people’s business, and since they shared that internship together first year. Probably Aizawa, since he seemed to know everything.
Mostly, though, it remained a secret, and Katsuki knew Deku preferred to keep it that way. Whatever. Katsuki used to be a giant piece of shit, bullied Deku for being a weak twerp, but even he had never bothered using that against him. Even at his worst, all Katsuki really cared about was strength. Being trans didn’t have shit to do with that; Deku had been (he’d thought at the time) a holier-than-thou weakling regardless of whateverthefuck was in his damn pants.
The two of them had been scrambling after each other since before they could talk. Of course Katsuki knew Deku’s parts were different.
Since he was one of the few in the know, and because he and the nerd were (despite Katsuki’s best efforts) neck and neck in class, the two of them knew each other’s training schedule to the minute. They sparred together at least once a week. Both of them preferred to do their heavy workouts when the rest of the class was out or asleep, preferred to focus on being the fucking best—unlike their chucklefuck ‘friends’, who would pause sessions to laugh at stupid memes on their phones.
As always, Katsuki woke up early. Ass crack of dawn early, before any other extras got to the gym. Deku, the loser, hated waking up early, so their gym time almost never overlapped unless they’d planned to spar. He’d heard the nerd had been spotted crawling back from the gym at 2 AM, glimpses of green hair caught by other up-too-late members of Katsuki’s idiot squad.
Deku went out of his way to avoid other people in the locker room for a very different reason than Katsuki. He knew that, logically.
But then, one day in third year, Katsuki’s alarm fucking died , the piece of shit, and he’d worked himself hard as hell in practical training the day before so his body had clung to the bed like a limpet. So—for the first time since he’d been kidnapped in first year—Katsuki slept in, had missed an entire goddamn period of class, and, of course, missed out on his prime gym hour of early-as-shit-o’clock.
Like fuck was Katsuki going to waste his time standing around the free weights waiting for extras to finish up reps. Like hell was he going to gym during slack off rush hour.
So he’d stomped over to Deku, hunched in shame at entering class a whole subject late, and growled out, “What time are you working out tonight?”
Deku, the nerd, startled. He blinked up at Katsuki with his big dumb green sparkly eyes like he hadn’t even noticed the universe had conspired to make Katsuki sleep in. “Oh, uhh,” he hedged, glancing around to keep their conversation as quiet as he could. “Tonight? Well, since it’s a Friday and we can sleep in tomorrow, I tend to go pretty late…”
“You go late every day, idiot.”
“Late if your bedtime is 8 PM, maybe,” Deku mumbled. Katsuki, having gotten his temper under control second year, contained his rage at the sass to a mild, low growl.
Unfortunately, Deku seemed to have grown immune to Katsuki’s intimidating as shit sounds. Whenever Katsuki growled at the nerd, he would just blush and look away, mumbling at himself about Katsuki having a deep voice. Hell yes, he obviously fucking did.
If Katsuki was gonna growl at his classmates, he was gonna be the best at it.
“What time.”
Deku smiled up at him, just a bit nervously, like a loser. “I’m going at- at around 1 AM…?”
“The fuck?! What kind of sleep deprivation are you putting your fuckin’ body through, huh?” Katsuki hissed, annoyed. “Think you’re gonna beat me if you’re not getting enough sleep?”
“I- I make up for it on the weekends!” Deku argued weakly. His stupid pretty gaze darted to their classmates, who always tried to ‘discretely’ eavesdrop on their conversations. Katsuki nodded at him subtlety, indicating wordlessly that no one could hear them (perks of being partially deaf: he knew what everyone could hear). Deku continued, bending close to Katsuki, “You know why I try to avoid everyone…”
Katsuki focused on scoffing, and not on the way Deku’s breath puffed gently over his hair and hearing aids, warm and soft. Ugh.
“Whatever,” he mumbled, looking away from the other boy’s freckly, wide-eyed gaze. “I’ll meet you there.”
Deku’s mouth dropped a bit in surprise. “R-really? Even though it’s so late and Kacchan hates staying up late…”
“Don’t have a choice today,” he replied, still a quiet grumble. “Since I fuckin’ slept in. I don’t want to work out with the other half-assing losers. Rather just sleep in tomorrow for once and be back on track Sunday.”
Despite his best efforts, Katsuki’s eyes followed the movement of Deku’s mouth out of the corner of his eye. Deku’s mouth had been open a bit in surprise at Katsuki’s agreement to his shitty schedule, and after his reply, his pink tongue had darted out to wet his lips before he responded.
“Of course!” Deku agreed, smiling up at him again like Katsuki had made his night by agreeing to lift weights at too-fucking-late-o’clock. “I was worried, when you didn’t show up this morning, but I didn’t want to barge in on you if you needed to sleep. I took extra notes for you, though, Kacchan!”
A year or two ago, Katsuki would’ve snarled and shouted that he didn’t need Deku’s stupid notes. Would’ve sneered at the notion that Deku would look down on him, would deign to suggest that Katsuki could even want Deku’s notes.
Now, his stomach squirmed, and he had to fight his own mouth from twitching into a smile. Ugh. He’d gone soft as shit.
He tried to convince himself he didn’t enjoy it.
Working out with Deku was infinitely preferable to working out with anyone else in their class, not that Katsuki would ever say that out loud to the nerd.
They always pushed each other, got Katsuki’s blood pumping with the challenging grins they would shoot at each other across the bench press. Seeing Deku lift heavy made Katsuki wanna lift heavier, made him wanna be better, made him want the nerd looking at Katsuki with wide green eyes.
Normal rival shit, obviously.
Maybe staying up so much later was part of it, too, but after weight lifting with Deku, Katsuki’s endorphins were a pleasant rush. Sweat coated the both of them as they headed back to the locker room.
It was a little bit surreal, stripping off sweat-soaked lycra at 2 goddamn AM, feeling as awake as he normally did at 5 AM. It was bizarre.
But, with Deku also stripping down in the shower across from Katsuki, it felt normal. Natural.
Katsuki wanted to workout with Deku every damn day. At a normal , respectable time, obviously, not fuck awful late on a Friday night, but some part of him was clinging to the seconds as the two of them headed toward the showers. Some part dragged his legs when they’d moved from each piece of gym equipment.
That had to be normal for friendly rivals too, he was pretty sure. And maybe he was just starting to allow his mind to consider just a bit of some interest in Deku. A miniscule, tiny little amount of interest.
The nerd was swole as shit, Katsuki was gay as shit, it was whatever . Wasn’t like Katsuki didn’t check out their other classmates on occasion. Hell, he’d made out with Kirishima on more than one occasion, he’d ogled a handful of their classmates’ physiques; it never meant too much to him.
Then again, maybe Katsuki didn’t fucking internally monolgue about his other classmates’ sparkly puppydog eyes, or their battle heated glares, or their blushing, freckly cheeks. Ugh.
Now wasn’t the fucking time, he tried to remind himself. Ideally, never was the time. Katsuki was not gonna get gay over his childhood victim turned rival turned friend. He was only just able to call the damn nerd a friend.
Katsuki scrubbed at the cloying sweat stuck to his chest with prejudice. Head tipping back, he ran fingers through his hair (shampooed and conditioned, separately, cause he kept good fucking care of his body). The vaguely dreamy buzz of endorphins, so out of place in a gym shower at midnight, caught up with him. He shook his head, trying to rattle away the creeping thoughts about Deku that had been clawing at his head the past few months.
“Oi, Deku,” he said, glancing briefly over his shoulder. At full blast, the showers were pretty damn loud, though, and the other boy didn’t seem to have heard him. Deku’s mop of curls was tilted back similarly to how Katsuki’s had been, eyes obviously closed even at an angle. The weird hazy energy that had followed him obviously had Deku in its grasp, too.
With a short grumble, Katsuki switched off his own showerhead. He turned back to Deku, ready to call out to the nerd and let him know he was gonna go the fuck to sleep, but he happened to turn at just the wrong time.
Or right time, according to Katsuki’s suddenly interested dick.
Oh, fuck, Katsuki thought. He swallowed, blood rushing from his steam-heated face to between his legs. Shit. Turn around and pretend you weren’t fucking staring, moron.
But his forebrain had relinquished control, and Katsuki’s animal hindbrain was hyper focused on where Deku had bent over into the most incredible arch, as the other boy stretched downward to wash at his calves. His cute, full, freckled ass was stuck out directly in Katsuki’s direction, and fuck if that wasn’t a nice sight, but that wasn’t what his dick honed in on.
No, that honor belonged to what Katsuki had never gotten such a good look at. Between those cheeks, below his smooth pink hole, Katsuki could see the lips of Deku’s pussy. They opened a bit, blooming open with Deku’s stretch, and Katsuki could see the shine of his smooth inner lips, could see the fucking flutter of Deku’s cunt.
In a damn minute, Katsuki had gone from flaccid to more than a half chub.
What the fuck, he hissed at himself. Go the fuck down .
His dick, obviously, didn’t listen. Because Katsuki couldn’t look away from where, just barely out of his arm’s reach, Deku’s pretty, puffy pussy was spread open for him.
It must’ve been his body’s revenge for staying up too damn late, he figured, cause his body was not listening to his internal pleas to turn around. His intelligent thoughts had slipped down the shower drains. He was being led forward by his damn dick. Literally
Oh, he thought aimlessly. ‘Cause his body was moving before he could really think, and he was walking toward Deku, not away. Oh, shit. I can’t fuckin’ stop. Shit. I like Deku.
Deku’s instincts were as good as Katsuki’s, and, sensing someone up in his personal space, the other boy shifted up, turning back to greet Katsuki with a question.
“Kacchan, wha…” he started, but his voice drifted quickly into nothing.
Katsuki must have been a hell of a sight, standing there, gaze molten on Deku’s body. His own pulse was racing, Katsuki’s chest rising and falling rapidly, and his dick was blatantly hard up against his lower abs.
Green eyes stared, wide, at Katsuki’s hard on. They trailed up Katsuki’s form, his heaving chest to his flushed face, and met Katsuki’s own.
He could only guess what Deku saw in his eyes, because Katsuki’s own mind was blank. All he could think of was the gorgeous arch of Deku’s muscles, the sweet curve of his ass, the opening of his little hole.
Fuck. Even just the passing thought had his dick twitch upward. Deku’s eyes darted downward, catching that, too. His own chest caught on a gasp of a breath, and Deku’s pretty eyes trailed back up from Katsuki’s hard dick to his face.
“Deku..” Katsuki said, voice a charcoal growl. He didn’t even fucking know where he was going with that, ‘cause his brain couldn’t think past the concept of Deku. Deku’s strong, fit body, dripping in front of him, his pussy, bent over on display for Katsuki.
They’d known each other their whole damn lives. Katsuki couldn’t put his thoughts into words—the feelings he’d been dealing with for Deku over this last year, the way the other boy kept making him blush by saying the nerdiest, cutest shit, the way Katsuki didn’t want to look away from his gorgeous body—but Deku could always read him so, so well.
Deku knew what Katsuki wanted, needed before Katsuki did. His eyes flickered briefly between Katsuki’s own, and he must’ve been able to read the wordless desperation there, because Deku was turning around completely to face him.
His eyes were sharp, like they got before Deku moved into a fight. But this time his pupils were blown wide, despite the bright fluorescent lights. Katsuki couldn’t look away.
Spreading his feet a bit, braced wider on the ground, Deku leaned his upper back against the shower wall. His feet stayed out further, opening his legs a bit wider than his shoulders. His leg muscles bunched as he braced himself there, spread open like an offering.
“Kacchan…” he breathed, voice scratchy, soft and heavy with the rapid rise and fall of his pale chest. “Kacchan can… look if he wants.” He paused, opened and closed his mouth for a moment and bit at his plump lower lip before continuing, voice wavering, “...Kacchan can. Can t-touch. If he wants to.”
Katsuki stared at the tempting space between Deku’s open legs. His body pulled him forward, following his damn dick toward Deku, inching slowly, like one would move toward a feral animal they were afraid of spooking.
He felt like a damn animal himself, looking at Deku, hands and chest braced against the wet shower walls. Felt like a beast ready to devour, looking at those splayed legs.
Deku watched him move closer with heavy breaths. His mouth had opened, panting in the shower steam, somehow an image of strength—with his firm muscles, cutting streams of water—and utter vulnerability, the want and hesitation in his eyes.
Katsuki carefully went to his knees in front of Deku, one at a time. Red eyes focused on Deku’s green own as he lowered himself down, testing the other’s reception. With a choking noise, Deku’s scarred fists clenched against the wet stone walls behind him.
After a moment passed like that, still in the hissing shower steam, Katsuki unmoving and supplicant in front of the other, he finally allowed himself to move. Slowly. Carefully. He raised his hands with the delicacy one would approach a piece of art, allowing himself to drop Deku’s heavy, blown gaze, tracing the firm musculature of Deku’s pecs and abs, arriving at his goal.
With two fingers, fucking shaking with his racing heart, Katsuki brushed gently at Deku’s clit.
“Ah!” Deku gasped. He’d barely touched him, but Deku reacted like he’d been punched in the gut, raising one scarred hand to his mouth. His freckled cheeks were blazing.
Katsuki rubbed softly at the hardened nub, still careful, still trembling. His eyes followed his fingers’ movements, and Katsuki saw Deku’s clit fucking throb .
“Fuck,” he growled. “Fuck, I’m barely touching you.” He continued his movements on his clit, circling with steady pressure. Katsuki wasn’t as familiar with clits as he was with dicks, given that he was gay as shit and he didn’t fucking have one, but he watched with fascination as Deku’s clit seemed to swell just a bit as he continued to rub.
“Feels- feels so good, Kacchan,” Deku breathed.
“Told you, I’m barely touchin’ you,” Katsuki rumbled. “You’re just so fuckin’ sensitive, huh.”
It wasn’t a question and it obviously didn’t need an answer, but Deku—always so eager to please Katsuki—nodded rapidly, mouth still pressing at his fisted, scarred hand. Katsuki laughed, breathy and shaky.
“Obviously,” he breathed. “Obviously, you’d be just as sensitive when you’re fucking as you are all the damn time.” Katsuki couldn’t hold back the smirk he shot up at Deku, who just nodded again, dumbly, staring wide-eyed at Katsuki’s leer.
Katsuki pressed hard one last time at Deku’s clit, dick twitching again at the little ‘ ahn! ’ Deku let out at that, and let two fingers drift down Deku’s slit. He traced the line of it with sharp eyes, barely pressing, just grazing the smooth skin back and forth.
“Spread your legs for me a ‘lil more, baby,” he mumbled, shoulder nudging at one of Deku’s legs. The nerd nodded, wobbly, and spread his legs a bit wider. Wanting to make sure Deku didn’t slip and bust his head open, and wanting to touch as much of Deku as he fucking could, Katsuki briefly reached down to help the other boy brace his legs right outside Katsuki’s broad shoulders.
The softer underside of Deku’s knees pressed down on the back of Katsuki’s shoulder blades. Katsuki nodded, moving back up and forward. Like this, he was right in front and right under Deku’s spread legs. With sharp eyes, Katsuki raised his fingers back to the line of Deku’s puffy slit.
“So soft,” he murmured. He spread his two fingers, one on each side of Deku’s pussy lips, and framed his cunt, rubbing outside and pressing. Both lips squeezed together in a soft pink swell.
Fuck, like this his pussy really looked like lips. Katsuki wanted to fucking kiss him between his legs. But he could only just lean forward as it was, if he wanted to eat him out properly without breaking his damn neck…
“Next time,” he said, voice rough and gaze flicking back up to Deku’s hazy stare. “I’m gonna lay you out on my bed, put your legs over my shoulder like this, and I’m gonna eat you out ‘til you’re crying.”
Deku moaned, completely fucking gone, but he nodded. Eager, he breathed out, “Please, next time, I want a next time with Kacchan.”
Katsuki refocused his efforts. That was that: this wasn’t a one night stand. He’d have plenty of time to kiss Deku’s pussy later, to spread his loser out on Katsuki’s sheets and have his fucking way with him. Deku wanted him. Fuck.
He increased the pressure on Deku’s slit, sliding gently between his folds. They slid so damn easy, everything between the nerd’s legs so slick , Katsuki marveled at the way his fingers just glided back and forth along his wet lips.
“You’re fuckin’ dripping for me,” he groaned. “So fuckin’ wet, baby. My fingers are just sliding right over you. Feel it?”
Deku nodded, slowly this time, a wobbly movement along with his wobbly breathing. So obedient, so responsive. It made Katsuki want to wreck him.
“I’m gonna put my fingers in your pussy,” Katsuki breathed, “okay? Two of ‘em. That okay, Deku?”
Wobbly still, but more enthusiastic, Deku rambled, “Yes, please put them in, Kacchan. You can- you can put your fingers in my- my pussy.”
Holy fuck . Just hearing the nerd say the word ‘pussy’ in his sweet, trembling voice had Katsuki’s dick throbbing hard where it had long since risen to press at his abs. Katsuki hissed, circling the base tightly to keep himself from nutting early just from hearing Deku call his hole a pussy .
I’m gonna be ruined too, Katsuki thought, Never gonna be able to jack off ever again without thinking about Deku asking me to finger his pussy .
Now that he had permission, Katsuki wasted no time to focus his two fingers on the place where Deku’s body was leaking for him. Lightly, he let the pads of his fingers press to Deku’s wet, fluttering, pink hole.
Then he pressed them both into Deku’s cunt, and they slid in with one hot slide to Katsuki’s goddamn knuckles.
“Yes , Kacchan!” Deku sobbed, moaning like a bitch in heat above him. And Katsuki was no fucking better.
“Holy fuck,” he rasped, out loud this time. “Fuck, holy shit , you feel so fucking good inside,” he growled, pulling his fingers out ‘til just the first joint was wrapped in Deku’s tight heat, then pressing back forward to his knuckles again.
Slick literally dripped from the seal of Katsuki’s fingers in Deku’s hole, leaking down his knuckles and his palms.
Katsuki was gonna get to put his dick in here.
Again, he had to fucking reach down with his spare hand to squeeze his cock. He didn’t want to come just from the thought of fucking Deku but damn.
He built up something of a rhythm, fingers curling in and out of that silky heat. Deku’s walls squeezed down on his hands like wet fucking heaven, and Deku was pushing his hips down into Katsuki’s upward thrusts, chasing his damn fingers.
“That good, Deku?” he mumbled. He let himself look away from the clench of Deku’s body riding his fingers, watching Deku’s abs flex with each downward thrust he made onto Katsuki’s hand, tracing sweat and water up his muscles to Deku’s sweet, burning face.
If he hadn’t been seeing it, he’d never be able to imagine it: the nerd looked absolutely debauched, head thrown back and cheeks red against his cute freckles. His eyes were green crescents, barely open, brow furrowed in pleasure, mouth open and panting and—fuck, Deku was still looking down at him, eyes hazy but following Katsuki.
“Fuck, yes, Deku,” he grunted, pumping faster, suddenly siezed to absolutely own this boy. “Never take your eyes off me, huh baby? Even now.”
“Always, always looking at Kacchan,” Deku moaned. “I, ah, wanted Kacchan for so long, I saw you blush at me before but I didn’t think Kacchan would. Ah! Want me like this,” he rambled, squinting with the effort of getting the words out. His legs were trembling where they braced around Katsuki’s shoulders.
Despite the situation being without a doubt the filthiest Katsuki had ever been in, Katsuki felt his heart squeeze, flutter in that odd beat of tenderness that he’d been unable to ignore. Fuck, he was gone as shit for Deku. He wanted to work out with Deku, and fight next to Deku, and yeah, he wanted to fuck Deku, now and in the future and forever.
“Good boy,” he huffed back at Deku, noting Deku’s sharp cry at the impulsive words. Gotta remember that . “I’m gonna make you come, ‘kay Deku? Then, I’m gonna stick my cock in you and fuck you full. Sound good?”
“Please, please, please,” Deku chanted, so goddamn polite, even as his cunt was soaking Katsuki’s fingers with his slick. He really is a good boy , Katsuki thought to himself, My good fuckin’ boy.
Goal in place, Katsuki angled his fingers to what got Deku’s legs clenching the most, a steady curved thrust, and he leaned forward and twisted his tongue around Deku’s clit.
“Ah! ” Deku cried. It reminded Katsuki of how he sounded when his feet were wiped out from under him in a fight. Deku’s hands finally unclenched from their position near his face, dropping down to grasp shakily at Katsuki’s wild blonde hair. “ Ahn! Uhn, Kacchan! Ka-cchan!”
Swirling his tongue like he’d seen in blowjobs, Katsuki pursed his lips to Deku’s clit and sucked. He never watched straight porn, and he hadn’t seen any gay porn with trans actors, so he was treating Deku’s clit like a cute little dick.
It must’ve been a safe bet, because Deku was grasping at his hair with his hands clenched and shaking, and he was shaking above him like he was gonna tremble apart. Short, desperate Kacchan!’ s reached him, and Katsuki knew that was one more damn thing he wouldn’t be able to get off without thinking about. Deku’s pleading, breathy voice calling his name, riding his fingers.
Deku’s chest caught and he cried out in a sound that Katsuki wouldn’t have thought Deku could make , a fucking pornographic moan of Katsuki’s nickname. His hands carded rough through Katsuki’s hair, and his legs trembled sharply before losing some of their tension.
Slick poured out of Deku’s tight hole like he’d opened a faucet. It wasn’t what Katsuki was used to thinking of ‘coming’—there wasn’t really any jizz or whatever—but he was pretty fucking sure that’s exactly what it was. Gently, he pulled his fingers out of Deku’s dripping hole.
He brought his fingers up to his face, staring at the slick utterly coating his fingers and dripping down his damn hand. “Fuckin’ gorgeous,” he rumbled. Slowly, stretching his aching muscles and soon-to-be-sore knees, Katsuki raised himself back up, using the hand not coated in Deku’s slick to help steady Deku.
The other boy was breathing heavy, blissed out. Katsuki raised the hand he’d had in Deku’s cunt, showing off the amount of slick on his palm. “Shit is gorgeous,” he said roughly. “You got so wet for me, Deku. So good.”
Deku whined at him, swallowing. Katsuki leaned forward and— finally , fucking finally—kissed Deku’s open lips. It was messy, sloppy, saliva dripping from their lazy tongues, and it was the best damn kiss Katsuki had ever had.
“Kacchan,” Deku breathed, shaky and dreamy. Katsuki kissed him quiet.
With his dripping hand, Katsuki reached down and stroked across his rock-hard dick. He had to squeeze, grunting low, keep himself from busting as he slicked himself up with Deku’s own juices.
“‘M gonna fuck you now, baby,” he mumbled against Deku’s lips. Deku’s eyes were half mast, pupils still blown. Their chests were pressing into each other, hard muscle into hard muscle, and Deku could definitely feel where Katsuki’s hard on was pressing a hot, solid line into Deku’s stomach.
“Mm,” Deku hummed. He kissed Katsuki once chastely, sweet like everything about him, then turned himself around, pressing his hands to the wet shower wall. Legs and feet bracing again, Deku arched his back in a stupidly flexible curve for a guy so damn beefy.
But it was the same damn angle that had tempted Katsuki into making the first move earlier: Deku’s plush, strong ass facing him head on, pussy lips spread even more than before with his arousal. He looked over his shoulder back at Katsuki, mumbling, “Fuck me, Kacchan.”
Oh, thought Katsuki, nodding and stepping forward. That was fucking hot. I’m gonna fuckin’ dream about this lewd nerd begging me to fuck him .
He didn’t have it in him to be upset at Deku ruining him. After all, even now, with Katsuki’s hands braced on Deku’s hips and his hard on sliding across the lips of Deku’s soft, plushy cunt, Deku was still looking over his shoulder. Always keeping his eyes on me , Katsuki thought.
The only downside of this position was that Katsuki couldn’t kiss Deku.
For a minute, before entering him, Katsuki just rocked back and forth, letting the line of his dick brush back and forth along Deku’s slit. Even just this felt fucking amazing.
“Kacchan,” Deku said, breathy again. “In me, Kacchan.” And then the nerd fucking shook his ass right on Katsuki’s hard fucking dick.
“Shit!” Katsuki hissed, the visual of Deku fucking working his ass and the lips of his cunt across Katsuki’s dick almost making him fucking blow yet again. He gripped the base of his cock hard. Then, unable to prevent the impulse, Katsuki brought the hand not clenching at his dick across Deku’s ass, a sharp slap! that echoed in the steam-filled room.
“Hn!” Deku moaned. But clearly it wasn’t bad, ‘cause the damn nerd shook his ass again , and shit, okay, Katsuki had to fuck Deku now or he was gonna nut on the damn floor.
With one hand steadying Deku’s hips, the other angling his aching dick, Katsuki pushed forward. First the head popped in, and then he slid all the way in —
“Fuck, fuck, fuck,” Katsuki hissed. He clenched his teeth hard, leaning forward across Deku’s back. He let the hand that had been guiding his cock grip at the other side of Deku’s hips.
It the hottest, tightest thing he’d ever felt on his dick. The walls of Deku’s pussy were plush and soft and wet, and squeezing like fucking nothing else, and in front of him Deku was moaning, that same pornographic sound.
“Ka-Kacchan is in me,” Deku moaned, breathy, a lewd little smile on his lips. His arms shook just a bit where he braces himself on the wall. “Kacchan is inside me, ah.”
“Fuck, yeah I am,” Katsuki breathed. He let himself settle for a moment, cause if he just got going he was gonna come instantly. Once he felt like he could move, he lifted his hands a bit, moving gently over the strong lines of Deku’s back, caressing over his sides. “You took my whole fuckin’ cock, Deku. Feel me?”
He nudged furter in, bumping his balls against where he bottomed out inside Deku’s pussy, and the tip of his cock nudged something hard inside Deku. Katsuki wasn’t sure if that was his cervix or whatever, but his dick was deep, carving into Deku’s pussy, and he nudged forward again, pressing firmly.
“I- I feel you,” Deku gasped. One of his hands moved to his stomach, moving over it like he would be able to feel the press of Katsuki’s dick into his damn stomach. The thought of that—of getting so deep inside Deku that he could feel his cock against his abs—made Katsuki’s cock throb. Deku was rambling, but Katsuki had never been happier to hear it.
“I can feel you inside me, Kacchan,” he babbled, as Katsuki pulled outward, just the head of his dick staying corked in Deku’s cunt. Then, pressing forward with more speed, cock pressing at that same spot inside, Deku just kept going. “So deep in me, ah, Kacchan’s taking my virginity, filling me up. Oh, ahn. I’m so full, full with Kacchan— ”
Katsuki hadn’t ever considered Deku’s mumbling to be hot, but holy fucking shit, he was so gone for this nerd. Just hearing him ramble about having Katsuki’s cock in him had Katsuki picking up his pace. He wasn’t gonna last long, but whatever. There was next time, and the time after that, and after and fucking whatever.
He panted roughly, hips clapping up against Deku’s ass, “I, I’m not gonna last long, Deku. Fuck. You feel too fuckin’ good.” Katsuki shut himself up, gritting his teeth again to hold off, picking up his pace.
The room filled with the obscene sound of Katsuki’s hips clapping into’s Deku’s cheeks, a wet slap of muscle and skin, and Katsuki’s balls swinging forward to clip where he slid inside Deku. He felt like he was losing his damn mind. All he could think of, conceptualize in the whole damn world was the hot, wet squeeze of Deku’s cunt all around his throbbing dick.
He could feel his racing pulse in his cock. He could feel how soft and amazing Deku felt against his head. It felt like his cock was at fuckin’ home inside Deku’s hot pussy, like he wanted to bury his dick and stay there.
“Kacchan,” Deku was panting, mindless and repetitive, and shit one of Deku’s hands had left the wall to rub at his fucking clit. That’s fucking hot , Katsuki thought to himself like a realization. Deku’s rubbing off to my dick filling him up . “Kacchan, I love Kacchan! Ah . P- please, Kacchan, I- I love you, Kacchan—!”
Hearing that, holy fuck, Deku’s goddamn love confession while Katsuki was ball’s deep, Katsuki didn’t have a fucking choice. He was coming harder than he ever had before. It made masturbation feel like an absolute joke. Katsuki could feel Deku’s walls milk his dick, his cock was gonna melt into the wet fucking heat.
“Shit, nerd, I’m fuckin’ coming,” he grunted, burying himself to the damn root. “Fuck, love you too, holy shit, I do fuckin’ love you. Feel so fuckin’ good, baby.”
In the end, he was rambling just as much as Deku was, as he pumped his hips gently inside Deku’s cunt, milking his orgasm til he felt like his soul had left his fucking body through his dick. He was panting heavily, he realized, sweat pouring from his body. He could barely hold himself up, legs shaky like he’d sprinted around the campus fifty times.
And Deku was—crying?
“Shit, Deku, you okay?” he asked, carefully pulling himself out of Deku’s hole. He couldn’t help the hiss he made when he cock left its hot, soft home and met the cooler air of the lockerroom. But he had to focus, damn it- “Deku, nerd, talk to me.”
With a sniffled, choked off sob, Deku pushed himself off the wall, turned around, and flung his arms around Katsuki’s shoulders. Katsuki felt like he was gonna fall over, but he manned the fuck up and gathered all his strengh to keep him and Deku standing.
Running a hand gently down Deku’s back, the nerd’s face buried in Katsuki’s neck, he asked softly, “...you alright? That was- damn. That was okay, right?”
After a minute or two of Katsuki trying to not panic, one hand rubbing tenderly at Deku’s strong back and the other buried deep and rubbing into his thick green curls, Deku finally pulled back. Having braced for the worst, Katsuki was shocked by the fucking blinding smile on Deku’s face.
“Kacchan,” he breathed, “Kacchan said he loved me, too.”
He said it like a parent announces a brat’s first words, like he’d agreed to marry the nerd. Katsuki felt himself blushing to the damn tips of his ears. Now was not the time to let his defensive temper spark, he consoled himself. He exhaled deeply and let himself give as much of a smile as he could, a quirk of his lips that—on anyone else—would probably be a smirk.
“Yeah, I love you. I fucking mean that, okay?” He hesitated, frowning angrily at the floor. “I know I can be a dick, okay, but… I don’t say shit like that unless I mean it.”
“I’ve always meant it,” Deku mumbled, hand raising to brush against Katsuki’s cheek. It was such a sweet, innocent gesture, Katsuki could feel himself fluster like he hadn’t had his dick buried in the nerd five minutes before.
“Always like, what, past few months? This year?”
For the first time since before Katsuki got his hands on him, Deku looked self conscious. “...I’ve loved Kacchan since we were three.”
Katsuki stared. “Even… even when—”
“Even then,” Izuku declared, his hand cupping Katsuki’s cheek firmly. His eyes, so sharp and green, and red-rimmed from crying, held Katsuki’s unflinchingly. “Even when you hurt me, or made me so mad and confused, or when I thought you’d never really see me again, I loved you. It changed, and it shifted, but… I never ever stopped.”
Katsuki didn’t consider himself a cryer. But the feelings bubbling up in his chest, catching in his throat and choking him, came out with an ugly, gurgling huff. He grabbed at the hand Deku had on his cheek, covering it with his own. “Fuck,” he choked, “I didn’t deserve it then. Probably don’t deserve it now , shit. Deku—”
Deku shook his head violently, eyes still firm. “It’s not about deserving it,” he argued. “I already forgave you, like I said last year. What happened brought us here, and I’m so happy to sh-share myself with Kacchan like this,” he stuttered, smiling up at Katsuki with an embarrassed blush.
“How can I regret anything when I get to love Kacchan like this?”
That’s why I don’t fuckin’ deserve you, Katsuki thought, but he would respect Deku’s word and keep that insecurity to himself.
For now, he leaned down, pressing his lips back to Deku’s and guiding him toward the showers. He washed his friend—we’re boyfriends now! Deku insisted, and shit that sounded good—his boyfriend’s body carefully, rinsing off the stench of sex. Kissing his face, his neck, his dumb cute freckles.
They lingered a bit, hands running over each other, until they both couldn’t stand the steam and turned off all the showerheads. Katsuki brought his boyfriend two soft, fluffy towels, wrapping them both up and holding him for a moment before they left the amazing, odd space the night had left for them.
“Kacchan,” Deku mumbled, face pressed into Katsuki’s pec. Katsuki hummed an acknowledgement, hand running through Deku’s tangled curls. Deku peeked up at him with a shy little smile, asking, “When, um. When can we start next time?”
Lewd nerd, Katsuki thought fondly. I'm gonna wreck him.