Work Text:
The nerd has been really shifty lately.
Not like, sneaky per se, but like… squirmy . Wriggly.
He doesn’t stop fidgeting. He’s been shifting back and forth in his seat like he has ants in his pants or some shit and it’s starting to grate on Bakugo’s every last nerve. It makes concentrating damn near impossible. He can’t block him out because if the squeak of the seat doesn’t immediately alert him, the movement out of the corner of his eye will.
“Deku,” he growls over his shoulder. “Will you fucking quit it!”
“S-sorry,” he hears mumbled at the back of his head.
He’s acting weird…weirder than usual. Who fucking knows what’s going on with that nerd. It’s always something with Deku. At the very least he’s stopped squirming as much so Bakugo does his best to tune him out and focus on the lecture.
That night, he’s studying in his room, the strange behaviors of his childhood classmate all but forgotten, when he hears a hesitant, barely there knock at his door.
For a moment, Bakugo wonders if he had actually heard anything. The tinnitus from using an explosive quirk at close range makes his ears ring almost constantly. He gets up to check though, just in case.
Through the crack of the door is a fluffy mop of hair he’d know anywhere.
“H-hi Kacchan…” He looks nervous.
“Deku.”
“I was hoping I could, um, talk.” His big green eyes dart away almost as quickly as they find Katsuki's and it’s so reminiscent of middle school, he can feel his palms try to ignite.
“So talk,” he says, shaking off the sparks.
That’s not him anymore. He’s better than that. He has to be if he’s to be the number one hero.
“Privately?” The nerd looks about ten seconds from throwing up on himself. If he pukes in Bakugo’s room, he’s gonna lose it. Number one hero or not.
He shakes his hands out again and takes a deep breath before stepping aside to let Deku into his room.
It’s difficult to not pick on him. He makes it so easy. The timidness. The quick eye movements like a trapped animal. The cowering. They all make him want to bully him. To leave him so broken that he’s never able to pick himself back up again. He takes another deep breath and wills the reactions of his inner bully to shut the fuck up.
“S-something is wrong.”
His eyes snap to the nerd, assessing his physical condition as his mind runs through analysis as quickly as possible with the tiny sliver of information given. Upon cursory glance, nothing seems to be amiss.
Deku watches him with thinly veiled panic. Perhaps worried that he’d know just by looking at him. Which is ridiculous because he’s the one who came to him. Not the other way around.
“Is it One for All?” He drops his voice low even though the possibility of them being overheard is low. They reinforced Bakugo’s walls after the second ‘tantrum’ he had nearly incinerated not only his room but both rooms on either side of his.
Izuku shakes his head, no. His messy locks move to and fro in an oddly mesmerizing manner.
He’s feeling irritated but he pushes the feeling down. He will not snap. He will listen and attempt to understand. He is not a bully. He will not snap. He will listen and attempt to understand. He is not a bully.
It’s become his mantra, playing on a loop in his head.
“What’s wrong?” He manages to get out. It feels like pushing glass up his throat instead of words. The fact that Deku came to him and not a teacher already tells him it’s something important. The nerd wouldn’t just seek him out for no reason so he tries to swallow down the disgust he feels at trying to comfort the bane of his existence.
Although now that said nerd is starting to turn dark pink and can barely look him in the eye, Bakugo’s curiosity is officially peaked.
“It’s my…m-my…” He squirms and presses his legs together. Bakugo clenches his jaw until he can feel his pulse behind his eyeballs. He is not a bully. He will not snap!
Deku bites his lip and as his chin trembles, Bakugo’s palms spark without his consent. Of course, the nerd notices, and his eyes widen in panic. He sighs and shakes his hands out again, trying his damndest not to glare.
“Deku,” He fights against the urge to shove his hands into his pockets. He actually really likes these pants and if he calls home for money for new joggers, his parents will know he’s burned yet another pair. “Just. Tell me it is.”
“Something is wrong…down there,” He whispers purposely, red as a strawberry.
“Hah? The fuck you on about? Whadda ya mean, ‘down there’?” He can’t help the mocking sneer in his voice. He’s working on his patience but still…he only has so fucking much of it.
He can’t even maintain eye contact and Bakugo relishes in the power he holds in the moment. That he lords over Izuku because it’s nice to see him suffer a little after having everything handed to him. He knows he shouldn’t feel like this. He shouldn’t! So he only lets himself savor it for a moment before tamping it down and smothering it like an errant flame.
“Please,” He bites his lip and Bakugo can’t help but focus in on the skin pulled taunt between his even white teeth. “It’s…really embarrassing.”
He rolls his eyes before he can stop himself. It’s always either embarrassing, cataclysmic, or both with this nerd. He rubs a still too-warm hand down his face and massages his temples.
“You can-you can tell me,” He manages to choke out. Fucking hell, he’s never said something so… soft before…ugh. He wants to blow his own face off.
The nerd takes a deep breath and steels his nerves before confessing to Bakugo’s bare feet instead of his face. “There’s something wrong with my…my butt.”
“Your what?” There’s no way he heard right.
“M-my butthole!” Deku sobs into his hands.
Bakugo is taken aback. He stands there gaping dumbly at the nerd because his brain is refusing to comprehend the words his ears just received. Maybe there was an attack while he was sleeping and everyone is dying and he’s in shock and his bodily functions are all shutting down and it’s causing this weird-as-hell hallucination. That at least would make more sense than what he just heard.
Deku is still crying behind his hands. He’s muttering something about a strange itchiness and then the words “soft” and “squishy” leave his lips and jump-start Bakugo’s fight or flight instincts.
“Deku!” He says it with authority and anger, not panic. It may have sounded like panic but it was not panic. Sometimes anger just sounds like panic. Yeah.
The nerd stops rambling enough to drag his face up miserably to meet his, hands still almost eye level as if they were a shield Deku could hide behind.
“Just…shut up for a second.” He needs to get his head back on straight. Since this isn’t a death-induced fever dream he actually needs to process just what the fuck is actually happening.
Deku is practically trembling and he’s bright red with humiliation and embarrassment and Bakugo can’t even enjoy it because he’s way too far out of his own comfort zone. Like, fucking leagues away from anything even remotely close to comfort.
He wipes his sweaty palms on his joggers. Probably not the smartest idea at the moment but he’ll figure that out later.
One problem at a time.
Deku is here. Deku is in his room with a problem. The problem in question is…his…ass or something.
What on earth could be so alarming that he needed to storm Bakugo’s room while he was studying instead of just going to the nurse?
Maybe it’s just too embarrassing? Probably. He wants to die of embarrassment and he’s only been told about it, never mind actually having the issue.
“Okay Deku, deep breath. Calm down, and let’s start from the top.” Is this fucking nerd wasting his time? Probably. Should he kick him out and continue to study? Also probably. So why is he willing to help? Because Bakugo Katsuki is the best fucking problem solver. Also, it’ll be nice to have Deku owe him for a change.
“Okay, yeah, okay,” The nerd takes a couple of breaths and then sits at Bakugo’s desk, wringing his hands in his lap. He plops down on his bed adjacent to the nerd and gives him his undivided attention.
“A c-couple of days ago it…started. At first, it was just uh, kinda…itchy? I guess? It was weird. It got more itchy as the days went on and…that’s not normal right? Like, I washed really well. Several times! Why-why would…” He shakes his head to stop himself from launching into a tangent. “J-just now in the shower, I was curious so I…I touched it.” His voice has dropped to a whisper and Bakugo has to lean closer just to hear him. “It feels so squishy. I-I never touched it before because I mean, why would I touch myself there but…I don’t think it’s supposed to feel like that.” Deku looks up at him again, eyes shining with new tears that tumble down his freckled cheeks. “K-Kacchan, I’m worried. What’s wrong with me?”
That’s a loaded fuking question.
While he’s no expert in assholes, he has seen a few. He’s seen the flashes of the butthole in the porn he’s watched. He looked at his own asshole once, out of curiosity to see if women and men had the same looking butthole. He squatted over a mirror looking at the tightly pinched skin, surrounded by a light dusting of blonde hair and that was that. Curiosity sated.
He’s not entirely sure what happens next, there’s obviously a disconnect from his brain to his mouth or something because before he knows it, the words “Can I see?” hang in the air between them and he most certainly did not mean to say that.
Much to his shock, Deku nods. Still sniffling, he stands and fidgets for a moment before asking, “Should I um, get on t-the bed?”
Bakugo doesn’t respond but he does scoot down so that there’s enough room for the both of them to sit side-by-side. Deku moves over and crawls on the bed, sitting on his knees with his back to Bakugo while he undoes his trousers and shoves them and his underwear down his thighs. Which shouldn’t make his throat so dry he can’t swallow but it does for some reason. Maybe it’s nerves.
He is seeing his friend’s-rival’s butthole and how do you just…look at someone’s butthole casually?
Deku bends forward until he’s pressed against the bedsheet with his ass directly in Bakugo’s face and suddenly all of the air is knocked from his lungs.
Never in a million years did he think his evening of study would end up with Deku face down, ass up presenting himself to Bakugo for inspection. It’s like something out of a bad porno.
Still, he said he’d help. So he leans forward to look, not seeing anything out of the ordinary except for some perky butt cheeks in his face. Behind them, a strawberry-red nerd absolutely shaking with trepidation.
“Can I…uh, touch?” It feels so perverted to ask. Deku nods and Bakugo pulls the cheeks apart to get a better look.
It does look different.
It’s shiny and puffy looking. It looks so, so soft…like a baby’s cheek or some shit. Before he even realizes it, he’s poking it with a finger and feels the flesh give under his touch. Almost like touching the inside of your cheek. Juicy is the word that comes to mind.
A small gasp pulls him from his thoughts and he’s utterly ashamed to realize he has a finger inside of Deku. It just slipped right in and he didn’t even notice. That shouldn’t happen without lubrication, right? He’s seen a couple of anal pornos but he didn’t watch the whole thing…He pulls his finger out then slides it back in over and over again and notices each time he does that it comes back more and more wet. Like his ass was… self-lubricating but…only vaginas do that. He knows for a fact his asshole doesn’t get wet.
What the actual fuck?
He looks over at Deku for the first time, taking his eyes off the strange phenomenon that is this butthole, and sees the nerd is redder than ever. He looks back with watery eyes and gives a little moan as Bakugo’s finger slides home. Oh, shit. He’s basically…like…fingering him!
He looks like he’s enjoying it if Bakugo’s pruney finger is anything to go by so he decides to…experiment. He pushes another finger in with the next thrust and Deku’s little hole takes them both easily. His legs clench together in surprise and then he arches his back into the feeling.
“K-Kacch-Wha-?” Poor nerd can’t even formulate full sentences.
“You been playing with your ass, Deku?” His voice comes out low and rough even to his own ears, like nothing he’s ever heard before.
“N-no! I ah, ah ohhhhh, I s-swear,” He moans out, saliva escaping out of the corners of his lips and down the sides of his wobbly chin.
“This ass is soft and loose…it’s more like a pussy than an ass. You sure you ain’t been fucking yourself stupid?” He says every word in time with the thrusts of his fingers.
“No I-I didn’t. I’ve mhn, n-never ah! N-not even once,” He cries even as he spreads his legs as far apart as he's able with his pants constraining his legs and arches into the touch.
“You just wanted me to fuck you, didn’t you? You got yourself all prepped and came to my room with some bullshit story because you couldn’t think of a better way to get me to dick you down. Is that it, Deku?”
The nerd shakes his head violently but keeps pushing back on the fingers in his ass and Bakugo thinks he’s been patient enough with this stupid ruse. He undoes his pants with his other hand and shifts behind Deku on the bed. Izuku looks back with a questioning “huh?” as he strokes himself to full hardness.
The color drains from his face as he notices the erection inching toward his most intimate parts, and he screeches out in panic, “Kacchan, wait!”
Bakugo removes his fingers but replaces them immediately, feeding his dick into the swollen opening little by little. It feels fucking incredible. Hot and wet like his dick is melting. Under him, Deku groans and shudders as Bakugo’s heavy balls come to rest right above his own. The nerd is twitching and trembling under him. His hole hot and wet.
“Did you cum just from me entering you?” He asks with an incredulous sneer.
The nerd chokes out a sob in response and shakes his head. More lies. Why can’t he just be honest with himself?
He wants to start off slow, more to keep himself from blowing his load immediately than for any altruistic reason like letting the nerd adjust to his size but his hips jerk on their own and soon he’s snapping his pelvis into the nerd’s plush ass, filling the room with lewd wet slapping sounds.
“Look at how fucking wet you are. You’re sucking me in so tightly, shit. Feels so fucking good,” he groans throwing his head back as he pounds his hips into Deku’s hole over and over. Every time he sinks in Izuku gets inexplicably more wet and soft. His insides are undulating and pulsing around Bakugo’s dick and there’s no way he can last.
With renewed force behind his thrusts and the nerd’s reedy cries spurring him on, he fucks into the sweet, sweet hole harshly, chasing his orgasm relentlessly.
With a final slam he still and unloads, groaning loudly as he does. Deku is shuddering and trembling under him, clutching his sheets even as he buries his face in them.
Bakugo doesn’t think he’s ever cum so hard before. Deku’s hole is still milking his cock so good. If he didn’t know any better, he’d swear there was a mouth sucking him through the best orgasm of his life.
It’s too good to stop. He can’t. His body won’t listen. His hips keep pumping, pushing his cum further and further into the recesses of Deku’s pliant body. The nerd whines under him, clearly overwhelmed but Bakugo can’t stop. His dick isn’t even that hard anymore but it’s almost like Deku’s body won’t let him pull out. Like it wants to keep him locked inside. Every time he starts to pull himself out, Deku's hole suckles the end of his cock and coaxes another spurt out of him. It's hypnotizing. He keeps doing it just to watch his dick jump inside that tight wet heat.
“K-Kacchan?” He turns his questioning gaze over his shoulder, his green eyes bright and watery and Bakugo feels his dick twitching back to life inside its deliciously warm home.
Apparently, Deku can feel it too judging by the way his eyes widen with panic. “No way,” he breathes out. “You can’t-are you-?” His lip wobbles and suddenly Bakugo is fucking rock hard. He can feel his cock expanding and filling with blood, stretching the tight cavern enveloping it. Deku gasps.
He leans back just enough to get a look at where they’re connected. Where he’s filling Deku so thoroughly. He takes in the trembling freckled thighs, the cock still dribbling into his own pants and onto his sheets. It feels so good inside Izuku, he can’t even be disgusted by the mess.
The backs of Deku's thighs are soaked and Bakugo traces his finger over some back to the source: the soft hole nursing his cock so perfectly. It's practically gushing around him.
It quivers when he touches it and he thinks maybe Deku was right all along. Maybe there really is something weird going on and he wasn’t just trying to seduce him.
If that’s the case…Ah, shit.
“Deku?” He leans over the nerd’s back to catch a glimpse of the face buried in his sheets. “You…you okay?” He hasn’t stopped slowly pumping his hips into the wet heat enveloping his cock. He can’t. It’s like he’s possessed. The loud squelch when he grinds his hips is absolutely addictive.
It feels too fucking good.
Izuku sniffles before he turns around and suddenly all of the air is stripped from the room. He’s flushed, tear tracks down his cheeks, eyes glazed over, panting. He looks completely fucked out and Bakugo can feel his dick pulse with need. The nerd’s eyelids flutter and he moans because of course he does.
Eyes hazy, mouth open, face wet. Fucking hell.
Because the moment Bakugo tries to get his wits about him, Deku would just go and toss it all out of the window.
“Ka-ah! Kacchan…mhmm…feels good. Feels good!” He’s slurring around the saliva coating his tongue and his chin and moaning and suddenly Bakugo has Deku’s face pressed harshly into the sheets while he tries his best to fuck him through the mattress. His other hand has a death grip on the cinch of the nerd’s waist and he’s pulling it back into his hipbones with every thrust. The animalistic urge that’s taken over him has blindsided all reason.
All he can do is fuck and wreck and break.
Deku’s cries are ones of pleasure and he’s sopping, so much that every time their flesh connects, liquid splatters haphazardly. There are drops hitting his abs, rolling down his balls, spraying his knees and it just turns him on more. Deku's pants are fucking soaked and Bakugo is sure his aren't in much better shape. He'd pause to strip them both if it didn't mean stopping even for a second.
He shifts so that he can plant his feet on the bed next to Deku’s knees, still keeping his ass up and face pressed into the sheets. He grabs the nerd’s hips for leverage as he mounts him like a beast and really pounds into him, ripping choked sobs from the form beneath him with every thrust. The nerd is drooling and babbling and all of Bakugo’s blood is rushing in his ears so he thinks it’s all “yes yes yes” and “oh god so good” but he can’t really be sure.
His entire being is consumed with trying his best to fuck his childhood friend to the brink of existence and back again. Pushing both of their bodies farther and harder than they’ve been pushed before.
He’s sweating all down Deku’s back and it rolls down his spine enticingly. If Bakugo wasn’t so far away he’d be tempted to roll his tongue along the paths they make. His balls are sore from where they’re smacking into Deku’s taint but it spurs him on, harder, faster, more. More!
He feels his second orgasm approaching fast. His dick is twitching even as he’s fucking Deku within an inch of his life with it, the tips of his fingers tingle and he really hopes his quirk hasn’t activated because he can’t stop even if he wanted to.
He’s too close. It’s too good.
His entire body is pulsing, thrumming. His blood is singing. His ears are ringing. He slams his hips as hard as he can, making more fluids fly in every direction until he’s coming. He’s coming so hard he’s probably roaring his release throughout the dorms but he can’t bring himself to care. Stars explode behind his clenched eyes and he grips and jerks Deku’s hips back over his cock as he milks his own release.
When he finally, finally comes back to himself he’s sitting back on his heels, dick flagging but still half hard, and Deku is collapsed onto his side, panting. His eyes slide over the figure, an odd sense of pride surging as he watches his cum leaking out of Deku’s well-used hole. A stranger, different sense of pride blooms behind his sternum as his eyes take in the puddle of cum Deku collapsed to the side to avoid laying in. His own.
Bakugo wonders how many times he came. Did he just come once but a lot? Did he come multiple times? If he was a bit more level-headed during the whole thing he would have known.
“Shit,” he notices bruises blooming along Deku’s hips in the shape of his fingers. There’s a palm-sized burn right below them as well. Pretty obvious what caused them to literally anyone with eyes. He runs a hand through his hair, damp with sweat. The whole room smells like sex, sweat, and nitroglycerin. “Deku I-” What can he even say? He fucked up.
Bright green eyes blink up at him as if clearing from a daze. “That was amazing,” he breathes out and Bakugo is so relieved he actually laughs.
“Fuck. I was worried I hurt you or something,” he slumps back.
“No,” Deku sighs, perfectly content. “J-just caught me off guard a little but-ah!” He gasps and bites his lip mid-sentence and Bakugo glances down in time to see a huge spurt of cum-his cum-escape from Deku’s ass. That shouldn’t be as hot as it is. His dick jumps and Deku’s eyes hone in on the motion.
They lock eyes and it’s heated and raw. It turns Bakugo’s breathing shallow and he rasps out, “You keep doing sexy shit like that and neither of us will be able to walk tomorrow.”
He can see Deku breathing heavier, his pupils dilating and the ever-present flush depending. “You say that like it’s a bad thing,” he licks his lips.
“Fucking hell,” Bakugo lays back and throws an arm over his face before he can act on his impulses again. He already can’t believe they just fucked twice. Or that he came so hard both times.
He feels the bed shift and dip next to his thighs, and the tacky heat of sweaty legs straddling his hips.
He moves his arm and gazes up at Deku, naked from the waist down and lining up Bakugo’s once again hard cock with his sloppy entrance and then he’s sinking down, eyes rolling in pleasure and a contented sigh escaping his lips. Bakugo groans in kind because fuck, it feels so good he wants to live there. With this wet heat wrapped around his cock 24/7. Day in and day out with these soft insides milking his dick so good.
“Shit, Deku…you feel so fucking good.”
“K-Kacchan too. You feel so good. So good. It’s so good,” he starts babbling over and over like a mantra while he bounces up and down on Bakugo’s lap.
He slides his hands up and down freckled thighs while admiring the view from below.
The squelching sounds are fucking nasty but Bakugo can’t bring himself to care. Not when Deku is bouncing on his cock so good. Not when he’s carving out a space inside of his rival just for himself.
His hands roam over his stomach and up his sides, purposely avoiding his pink cock until he reaches Deku’s little flushed nipples. He pushes the little nubs in at first then circles them gently with the pads of his fingers. Every clench and quiver around his cock goes straight to his balls.
“You like me playing with your nipples, nerd?”
Deku’s biting his lip again and Bakugo hates how fucking sexy it looks. Especially with the sheen of sweat reflecting the glow of the bedside lamp on the nerd’s skin and making him fucking luminous. Gorgeous.
“Feels good,” he sighs, switching from bouncing to grinding back and forth slowly. "Feels so good!" He gasps and whines. Each pass against his prostate makes him leak more and more onto Bakugo’s abs.
“Making a fucking mess,” he groans out, pinching Deku’s nipples and enjoying each time his ass tightens.
Deku swipes a finger through the precum pooling on Bakugo’s stomach and brings it to Katsuki's lips. His first thought is ‘No way in hell I’m gonna eat that shit’ but then somehow his mouth parts without his permission and Deku is stuffing his coated fingers onto his tongue.
It’s weirdly tangy but he’s so turned on he barely notices the taste. “You like it Kacchan?”
It’s breathy and quiet. He nods since the fingers are still in his mouth. He licks between the digits and bites a fingertip, groaning.
Bakugo lets his hands drop from the nipples, now bruised and swollen, and grips Deku by the hips instead. He bucks up into him, snapping his hips.
The nerd fucking sings when he does. He meets Bakugo, thrust for thrust, riding his cock like a champ. He’s mesmerized by Deku’s hard cock slapping against his own abs as he undulates his body like a damn porn star.
It feels like they’ve been fucking for hours. He doesn’t know how long it’s been since they started. Maybe it really has been hours.
With flushed cheeks, Deku pants out “I-I don’t think I can hold on much longer.”
“Fuck, me too, just a little longer though...almost there,” Bakugo growls.
“Ah, ah, oh oh!” Deku is practically crying but even still he doesn’t stop moving his sinful hips. He even reaches behind himself to grab Katsuki’s balls and massage them in time with his movement.
“Fuck, fuck!” His hips rock upwards, nearly bucking Deku off as he starts to cum. He keeps slamming into him over and over, each pulse stronger than the last.
“Kacchan, Kacch-gonna cum, gonna cum!” Deku sobs as Bakugo plants his feet and fucks up into the nerd’s prostate with everything he has. He's still coming somehow and it's like he can't stop. Like he’s gonna nut hard enough to rip a hole in time-space but he can’t stop. His ass and legs and arms are screaming at him but he can’t stop.
He slams inside that tight wet heat harder, faster.
Plap plap plap!
“Kacchan! Cum-Cumming! Open your mouth!”
Inexplicably he does and Deku strips his own cock like it owes him money as he unloads all over Katsuki’s pecs and face. He does manage to get some in his mouth. In lieu of swallowing any, Bakugo simply holds any that got in his mouth on his tongue. Mouth open to show the nerd because somehow it's nothing except fucking hot. Deku doesn’t stop jerking himself until his dick has gone flaccid but by then he’s already started licking his own cum off of Bakugo’s tits. Swirling it around his nipples with his tongue and then finally holding some in his mouth as he connects with his childhood friend in a kiss.
Deku pushes more of his own cum inside Bakugo’s mouth, sucks the errant dribbles of it off of his lips while he waits for him to swallow then goes back to kissing him deeply. Licking at the insides of his mouth, sucking on his tongue, his bottom lip, kissing up his throat.
In no time they’re making out, wet and messy, Bakugo still inside Deku and Deku beginning to grind back on him again.
He gently pushes Izuku back by the shoulders. “I need a break,” he croaks out.
The nerd blushes but moves to climb off his cock. His legs shake and he practically collapses like a newborn fawn and Bakugo doesn’t hide the smirk it brings him.
He glances down at himself and his bed and grimaces. “Gotta take a fucking shower. What a mess.”
“Oh, um,” Deku is suddenly shy and fidgeting again. “Do you uh, I can- I can go. Yeah, I’ll uh, I’ll just…”
“Deku.”
He turns from where he’s started gathering his clothes. “Yeah?”
“Don’t be a dumbass. Help me change these nasty ass sheets or all of the next rounds will be on the floor.”
“On the...? Oh, okay Kacchan,” he smiles, grabbing the bedding and wiping himself off with it as he gathers it from the mattress.
Bakugo pecks his lips as he moves to help, smiling back. Who would have thought Deku's little 'problem' would have worked out so well?
