Archive of Our Own ^beta

Chapter Text

The door was locked and the lights were dim in Izuku’s dorm room. It was late, but not too late, otherwise Katsuki would have started to complain about “needing his damn sleep, nerd!” by now. The sound of breathless moans filled the air as Izuku had to force himself to stare at his ceiling and not at the boy in front of him. 

This was supposed to be a funny bonding experience, getting to practice eiffel towering with two connected fleshlights but Katsuki sounded so … needy. Gripping the thing for dear life as his breaths quickened, eyes squeezed shut as he began to bite the inside of his cheek to hold back the moans. Izuku couldn’t take it anymore. 

He finally held eye contact with the boy opposite to him, and he swears he felt the air shift. Katsuki stared back with an intensity he had never seen before. When they sparred, Katsuki’s eyes were sharp and attentive, analysing and anticipating every move, but here… it was something else.

Katsukis eyes inspected every part of Izuku’s body, half lidded and lazy, eventually coming back up to his face to continue staring at the boy. He licked his lips and smirked as a sudden burst of confidence took over his body. Izuku felt weak at the knees. His face was burning and the steady pace he had going on was stuttering but he just couldn’t look away. Their paces quickened and soon enough they finished, with Katsuki covered in a thin sheen of sweat while Izuku had bitten his lip in an attempt to hide an embarrassingly loud moan and ended up drawing blood. 

Izuku wiped his eyes and hid behind his arm in embarrassment.

“Hey, Deku,” Katsuki rasped, catching his attention.

“About that, Kacchan… I-” Izuku was cut off by Katsukis thumb brushing over his lip, followed by a smile.

“Maybe we should invest in some blindfolds or something for next time, hey nerd?”  

Izuku’s legs turned to jelly, falling to his knees and staring helplessly at Katsuki as he picked up his clothes from the floor and put them back on. He was speechless. This was not how this was supposed to go. Him and Kacchan were supposed to jerk off, make a few jokes, finish, and that would be the end of it. Sure, Kacchan is attractive… very appealing to the eye he’d say, but can you blame him? It’s not like he’s the only one that likes Kacchan.

He paused. Does he really like Kacchan? The thought feels natural to him, when he knows deep down it should probably scare him.

Katsuki pulled up his pyjama pants and turned to face Izuku, his usual scowl replaced with a neutral expression. 

“Night, Deku” He says, followed by the click of the dorm door. Izuku takes a deep breath and blankly stares at his ceiling. He feels his breath leave him for what feels like the third time.

“Wait… next time?!”

–*–

Izuku dropped his backpack in his room and flopped onto his bed. He can’t remember a single  thing from today because his mind is full of Kacchan, Kacchan, Kacchan. What happened last night? They’re comfortable enough with each other to try out this kind of thing, but something changed. Izuku’s stomach was doing flips thinking about a next time, and was Kacchan serious about the blindfolds?! The thought of that alone went straight to his dick, his pants tightening uncomfortably as Izuku shifted in place. 

“Midoriya,” Shoto calls from the other side of his door as he knocks, and Izuku yelps. 

“there’s some snacks in the common room if you would like. The others all brought something to celebrate the end of the week” he continues, waiting for a response as Izuku flushes red, acknowledging his current situation.

“Thanks Todoroki-kun! I’ll be down in a minute” he yells, hoping that would be the end of their interaction for now.

“Sure thing”

Izuku lets out a breath he didn’t realise he was holding and gets up off of his bed. He hears another knock at his door. After adjusting himself as best as he can and brushing his pants off, he goes to the door. He cracks it open, enough to see who’s there.

“Todo-”

“Deku” Katsuki rasps as he pushes past Izuku and into his room.

“K-Kacchan? Did you need anything?” Izuku can already feel his cheeks burning, and Kacchans presence is definitely not helping with his situation. 

“Yeah,” Katsuki begins, oddly nervous. This is enough to put Izuku on edge, but he lets him continue.

“So yesterday, uh. It was… good.” he announces, clearly trying to keep his voice from giving away any emotion, but the light pink tinge on his cheeks and ears are a dead giveaway. 

“Yes! Yeah, yesterday was really… Well, I personally really liked it and I’m surprised Kacchan did too! I wouldn’t want to make you uncomfortable so I’m really hap-”

“Again? Tonight?” He interrupts, staring directly at the shorter boy in front of him. Izuku stares back with his mouth open. He shakes himself out of it and replies.

“I’d love to! Um, I mean,” Izuku giggles nervously, scratching the back of his neck. He clears his throat,

“I’ll see you tonight then, Kacchan?” he squeaks out, looking up at Katsuki through his lashes.

Katsuki nods, 

“Yeah, see you then… Freckles.” 

Izuku watches Katsuki leave his room for the second day in a row, just as breathless as he was yesterday. Kacchan will be the death of him. He looks down at his predicament and sighs. He can’t go downstairs like this. He blames Kacchan.

Chapter Text

Books were piled on his desk as Izuku tried to do his homework, but his mind was elsewhere. He chewed on his pencil as he tried to focus, the letters and numbers on his paper blurring together. He groans and leans back on his desk chair, staring up. His mind immediately wonders what Kacchan is up to. Is he trying to study and failing like he is? Is Katsuki thinking about him too? He shakes his head, getting rid of the thought.

“Stupid, why would he see me like that? What we did isn’t… like that” he mumbles to himself. It’s fine, anyway, Izuku can survive with Kacchan not liking him back. The knock on the door that followed that thought made Izuku jump out of his seat. He walked up and opened it, seeing Katsuki on the other side.

“Hey. Can I come in?” Katsuki asked, rather than demanded, which made Izuku tilt his head.

“Y-yeah! Of course.” he stepped aside to let Katsuki in and inhaled his scent. Kacchan must’ve just showered, the smell of his shampoo and cologne filling Izuku’s dorm room.

“Pardon the intrusion” He whispered, more to himself than anything, but Izuku picked it up immediately. He always had a knack for realising things about Kacchan that most people didn’t.

“I.. Uhm..” Katsuki begins, eyes darting around the room, looking anywhere but at Izuku.

“Are we doing this?” He blurted out, making the shorter boy jump.

“Yes!,” Izuku replied quickly, giving the same energy as Katsuki’s question. They were both nervous, and it was incredibly obvious. Katsuki’s cheeks were tinted a rosy shade of pink while Izuku began to fidget, staring down at his shaking hands. Another pair of hands grabbed his and held on tight. Warm hands. Rough, but comforting. Izuku looked up to Katsuki, the question “What now?” on the tip of his tongue yet he stopped himself before he could continue. Katsuki looked around the room, seemingly searching for something that Izuku couldn’t begin to guess what it could be.

Both eyes make their way to the red school tie Izuku left at the end of his bed. His hands were freed, missing the feeling of Katsuki’s hands holding him so tenderly, and he watched as Katsuki reached for the tie. He picked it up and brought it back to where he and Izuku were initially standing.

“I wasn’t kidding, ya know ..” Katsuki nervously chuckled, fiddling with the tie in his hand.

“Kacchan wha-”

“Hey uhm… you’d tell me if you’re uncomfortable with this, yeah?” he asked, the wobble in his voice prominent. Izuku giggles, where was the confident Kacchan from the other day? The Kacchan that was all shiny eyes and sly smirks? He’s not complaining, though. This quiet, nervous Kacchan is giving him a warm feeling in his gut that he’s never felt before.

“Of course, Kacchan. Only if you do the same for me, okay?” He says, locking eyes with the taller boy in front of him, causing him to blush and look away.

“Yeah, whatever.” he huffs, clearly flustered before they've even started. How cute, Izuku thinks. This is his chance to show Katsuki what he’s made of. To make him squirm and shake. To hear him breathing out his name and his pretty little moans as he’s begging for more. Izuku holds his hand out, asking for the tie. Katsuki tilts his head, but hands over the makeshift blindfold anyway. Izuku makes a turning motion with his finger, to which Katsuki follows. He comes up close behind the blonde boy and begins to block his sight with the tie.

“Maybe you should start off blindfolded, get used to the feeling and embrace it, hey Kacchan? I want you to be good and keep it on for me, okay? No peeking!” He teases as he finishes tying the knot. Katsuki shivers and lets out a big breath.

“Y-yeah, I can do that”

Izuku’s hand makes its way to the side of Katsuki’s face, holding him tenderly. He leans in to kiss the corner of his mouth,

“Cute” he whispers, inches away from the blonde’s lips. They gently part, and Izuku can’t help but stare. He places both hands on Katsuki’s shoulders, comforting the boy and allowing him to be aware of his surroundings. He then makes his way to his bedside table, retrieving the joint fleshlights from the other night, placing it just in reach at the edge of his bed. His hands find their way back to Katsuki’s broad shoulders, trailing lower to his pecs and lightly trailing his fingertips along Katsuki’s torso, stopping at the hem of his black tank top.

“Arms up” Izuku says gently. Katsuki hesitates but compiles, raising his arms to allow Izuku to remove his shirt for him. Katsuki’s not sure if it’s the cold air or the nerves, but he shivers, and Izuku notices.

“You okay, Kacchan?” he questions as his hands return to his pecs, fondling them and flicking a puffy, pink nipple in the process.

“Shut it, nerd. I’m… fuckin fine” Katsuki breathes out, arms gripping Izuku’s biceps like a lifeline. Izuku mentally screams, loving the look of Kacchan’s pretty lips parted as his breath hitches. He needs to see more. He needs to hear more. Izuku pulls at Katsuki’s nipples a few more times, seeing his brows furrow and feeling his nipples harden under his fingertips. When Katsuki finally lets out an audible whine, Izuku realises he can’t hold back anymore. Lips connect to Katsuki’s chest, nipping and sucking like it was his last meal. He licks a strip over the nipple and Katsuki moans… and its music to Izuku’s ears. Hands gripping Katsuki’s sides, he licks and sucks harder, as if he’s trying to suck the pretty little noises out of the blonde.

“Jesus, Deku.. s-shit” Katsuki whispers shakily, and god, Izuku could finish there and then, soaking up the sounds Katsuki makes. Izuku groans, because.. Obviously, and he detaches from the nipple, now swollen and red.

“Kacchan..” Izuku breathes out, his hands shaking with need. A need for more. More Kacchan. More, more, more. “Kacchan. Can I kiss you?” He begs, distracting himself by grabbing Katsuki’s hips tightly to regain at least some control. He’s been thinking lately and.. Yeah. He’s in love with Katsuki. It was a scary revelation, considering their history, but the feeling slowly simmered into something nice. Comforting. Right. He waits for Katsuki to respond, not wanting to take things too far or misunderstand anything. His thoughts are interrupted by two warm hands, reaching aimlessly and finding their way onto the sides of his face. Katsuki’s… shaking?

“Please” Katsuki whines.. He actually whines, his voice breaking, and Izuku crashes their lips together before he even has a chance to think. The kiss is messy, which is expected considering neither of them have had much experience with this kinda thing excluding drunken kisses during truth or dare, but Izuku could kiss Katsuki forever, he decides. The way Katsuki moans into his mouth is downright sinful, and Izuku knows this is more than just messing around with some fleshlights. He needs more.

Izuku’s thumbs slip under the waistband of Katsuki’s sweatpants, tugging them down. His breath hitches, mouth watering at the sight of Katsuki’s painfully hard cock restrained by his tight underwear. Izuku drops to his knees, leaning in and placing open-mouthed kisses over the bulge, and Katsuki jolts, hands flying to Izuku’s curls and gripping tightly.

“I-Izuku… fuck. What are you..” Katsuki’s words are cut off as Izuku pulls down the blonde’s underwear. His cock springs free, the pink tip shiny with pre cum. Izuku almost growls at the sight before he grabs the base and puts the tip in his mouth, tongue swirling and savouring the taste of Katsuki on his tongue. Katsuki hunches forward, the hands in Izuku’s hair tightening even more as he groans, biting his lip in an attempt to muffle the sounds. “Izuku... your mouth.. so fuckin’ hot.”

Izuku takes more of Katsuki’s cock into his mouth, adjusting to the intrusion as his hand strokes whatever didn’t fit. He knew Katsuki was big; the guys have all seen each other naked in the locker rooms, plus he caught a glimpse of it during their last…what would he even call this? Sexual encounter? But having it in his mouth… in his hand… would Kacchan blame him if he said he wanted Katsuki’s dick in his mouth for the rest of his life? He hopes not.

He bobs his head and Katsuki lets out a strained moan, head tipping back and abs clenching. Izuku has a front row seat to see Katsuki like this…how was he so lucky? He speeds up, tongue swirling around the shaft as he takes in as much of Katsuki as he can, wrist twisting and hand gripping the shaft tight in a way he knows will have Katsuki panting. His assumption is confirmed almost immediately, Katsuki moaning loudly, his cock pulsing in Izuku’s mouth as he reaches his climax. Izuku leans back, Katsuki panting in an attempt to catch his breath. His chest rises and falls, and he lifts an arm slowly to peak out from under the makeshift blindfold.

“Where the hell did you learn how to suck dick like that, huh?” Katsuki asks between deep breaths, his cheeks flushed and eyes shiny as he takes in the sight of a fully clothed Izuku on his knees. “And why the hell are you still dressed while I’m butt ass naked?! Get up, asshole. Your turn” he says with a tired smirk, and Izuku thinks it's the sexiest thing he’s ever seen.

“Okay, Kacchan.” he says breathlessly, standing up and wiping the drool from his chin with the back of his hand. Izuku looks up at the taller boy with half lidded eyes, eager to see what Katsuki will do to him.

Chapter Text

Izuku sits at the edge of his bed, hands curled up into fists and resting on his knees. Katsuki looks at him like an animal stalking its prey. Izuku checks his pulse.

“What the hell are you doin’?” Katsuki rasps, his head tilting slightly as he smirks. He finds this funny? Izuku continues to check his pulse, two fingers on his wrist. A beat. Then another. He then pinches himself and yelps. He just had to check if he was dreaming because.. This is just…

“Oi? What the hell? Quit it. You’re not dreamin’, nerd.” the blonde boy says with a chuckle and a genuine smile. Oh he’s pretty, Izuku thinks. So, so pretty.

“Strip” says the pretty boy, and Izuku obliges, standing up and quickly stripping out of his clothes and throwing them somewhere across his room. He’ll deal with the wrinkles later, otherwise Kacchan would cuss him out for looking like a mess. He sits back on the edge of the bed, goosebumps littering his freckled skin from the cold air in his bedroom and the excitement of what’s to come. He looks up at Katsuki, the boy smirking down at him as he reaches for his hands. He takes the red tie off his head, bringing it under Izuku’s wrists.

“Wrists together, Izuku.” Katsuki says with a gentleness in his voice. Izuku looks up at him, holding his wrists together as the blonde secures them tightly with the tie. Izuku gives it a tug for good measure, his breath hitching, awakening something in him that he didn’t know he was into. His cock throbs between his thighs, painfully hard and begging for a release, tip covered in pre cum as it dribbles down his shaft. Katsuki must hate him, actually, because he pushes Izuku backwards and he bounces as his back hits his bed. Katsuki crawls over him, grabbing his binded hands and pinning them over the smaller boy's head.

“You’re gonna be a good fuckin’ boy for me, Deku. No usin’ One For All to free yourself. Don’t even think about trying to break free, kay?” Katsuki growls, his red eyes narrowing and his mouth curling up into a smirk, sharp canines glistening. Izuku’s breath leaves him entirely, and all he can do is nod, watching Katsuki lean in. His breath ghosts his lips, their lips just barely touching before they finally connect again in what could be the world’s most aggressive kiss. Typical Kacchan.

They moan into each other's mouths, and Izuku gasps when he suddenly feels a warm hand grip his cock. It’s sweaty, probably from Kacchan’s quirk, but it’s so warm.

“Amazing, Kacchan. Are your hands always this warm? Is it because of your quirk? Of course it is, stupid question. Ah.. feels good, though. Hot..” Izuku rambles breathlessly. Of course he’d be thinking of Kacchan’s quirk while he’s jerking him off. Katsuki chuckles, his thumb coming up to rub the tip of Izuku’s sensitive tip, smearing the sticky substance, and Izuku’s hips jerk up. Katsuki lets go of Izuku’s wrists and sits back on his knees, because he can’t have Izuku squirming like this. He wants to pin him down. Tie him up even more so he can’t move a muscle. Maybe next time, Katsuki thinks, taking his free hand and grabbing Izuku’s hip tightly, keeping him still as his other hand continues to thumb the tip of Izuku’s cock. Is it bad that he wants to tease the nerd just a little?

Izuku writhes under Katsuki’s grip, his fists clenching and his head tipping back as he lets out the whiniest moan Katsuki’s ever heard. He groans, the sound making his dick jump. He needs to hear more. His hand slides down the shaft, wrist twisting as he pumps Izuku’s dick at a slow pace.

“You got lube? Did some research and… you gotta prep me” Katsuki says, eyes glued to Izuku’s cock, unable to look him in the eyes. Izuku jerks up into a sitting position, his binded hands grabbing Katsuki’s arm. He looks up at him with stars in his eyes, cheeks flushed red and mouth hung open as he stares. Kacchan… did research?!

“Y-You want me to fuck you, Kacchan?” Izuku rasps. When the fuck did he learn how to sound like… that? Katsuki thinks, looking away and sucking his teeth to distract himself from the heat pooling in his stomach. The hands gripping his arm tighten.

“Kacchan? Answer. Do you want me to fuck you?” the smaller boy whispers breathlessly, strong fingers wrapping around his arm and Katsuki shudders. Even when he’s tied up he’s still making Katsuki feel so… powerless. He pushes aside his pride, nodding shyly and still avoiding Izuku’s gaze. Izuku raises his hands, cradling the bottom of Katsuki’s face and swiping a thumb across his bottom lip. He looks up at him expectantly, waiting for Katsuki to just admit what he wants… verbally. He needs to hear those words.

“I… shit, yeah Izuku. Want you to fuck me…” Katsuki says, looking at Izuku through his lashes, eyes darting around and taking in the expression of the boy under him. Izuku’s body fills with confidence after hearing Katsuki, removing his hands from his face. Katsuki immediately misses the feeling.

“Hands and knees. Ass up, Kacchan. I’ll get the lube.” Izuku demands gently, slipping out from under Katsuki and rummaging through his drawer, the action slightly difficult due to the state of his hands, but he eventually pulls out a half used bottle of lube, turning around and…

“Holy shit” Izuku whispers shakily, the words slipping out of his mouth as he takes in the sight of the boy in front of him.

Katsuki’s on his hands and knees, just like Izuku told him, cock hanging between his legs, red and leaking. His hands grip the sheets so tightly that Izuku just knows he’ll have to buy new sheets after this, but it’s so worth it once his eyes find Katsuki’s face. His cheeks are flushed the prettiest shade of red, eyes half lidded and his mouth turned down in a nervous frown. Katsuki averts his eyes, half hiding his face in the sheets under him. Izuku would check his pulse again if he could. He crawls on the bed, settling behind Katsuki and dropping the lube as he reaches forward, hands resting on Katsuki’s firm cheeks, squeezing and kneading the flesh. Katsuki lets out a soft sound. Spreading his cheeks, Izuku lightly rubs his thumb over Katsuki’s rim, watching as it puckers under his touch, and he leans forward, breath ghosting Katsuki’s bare skin.

“Thank you for this meal.” Izuku whispers almost inaudibly, and before Katsuki can turn around to question him, Izuku’s tongue hungrily laps at his hole. Katsuki’s eyes widen and he jolts.

"W-what the… ah" he stutters out, his words cut off with a shuddered moan. Despite his shock, there's a spike of arousal spreading through his body as he feels Izuku's wet tongue sliding around his opening.

"So tasty, Kacchan..." Izuku mumbles, his face flushed as he pants against Katsuki. He continues to lap at his hole, slowly pushing his tongue deeper inside, while the blonde’s hips press back desperately against Izuku’s face, back arching as he clings onto the sheets. He hides his face, letting out soft moans and groans as he bites his fist to muffle his voice. Izuku pouts, wanting to hear more, and sneakily uses blackwhip to flip Katsuki over onto his back. The boy looks up at him with wide eyes and red, spit-slicked lips, panting as he looks down at Izuku’s still-bound wrists, then towards the black tendrils hovering behind him. Izuku chuckles shyly and shrugs, lifting his arms and presenting the intact tie.

“I didn’t break free” Izuku says breathlessly, a teasing undertone to his voice as he eyes the boy underneath him. Katsuki’s legs are spread, his skin covered in a shiny layer of sweat as his chest rises and falls. He scowls, looking away as the tips of his ears burn red.