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Katsuki’s proud.
Today, at the gym, he was able to outdo Izuku. They’ve wordlessly settled into a prize-less competition, whether it’s an extra weight on their bars or a few extra reps to push the other. Tonight was his night.
After earning bragging rights for the week, he knows he deserves a nice, hot shower.
The cool air of the bathroom bites his nipples, pebbling them into dusty pink nubs. In a haste to get under a warm stream, he hooks his thumbs into the stretchy band of his shorts and underwear and takes them both off in one motion.
Next time, maybe he’ll work out shirtless and watch as Izuku tries not to stare at him. He’s such a fucking weir—
The door swings open and, of course, his shorts tangle around his ankles as he clambers to pull them up. Izuku’s round, shocked eyes are now taking in his naked body, specifically his soft dick.
“Dammit, Deku!” he yelps out.
“Ka—Kacchan!” Izuku flounders and steps back in the doorway of their shared bathroom. “I was just… I thought you went to your room and—” his breath hitches, “Oh… it’s so cute—Wait! I mean—I… oh my—”
Izuku seems to be failing a personal battle of keeping his eyes off of his crotch.
“What the fuck are you talking about!?” he snaps and finally untangles his shorts from his ankles.
“Uhm,” he watches as Izuku’s eyes shoot up to the ceiling and then down again as he bunches his shorts to his front, “your… your penis… it’s small.”
Izuku’s voice drops to a whisper as if he were saying something taboo.
“Are you serious? It’s soft, dumbass.”
Izuku pulls his shoulders back and brings his left hand across his chest to grip his bicep.
“Uh, Kacchan,” Izuku coughs and drops his hands in front of him, “It’s really small, even… even for it being soft.”
It’s almost embarrassing that Izuku, of all people, thinks his penis is small and Katsuki is a man of pride.
“No!” he grumbles, “It’s not.”
Izuku is still standing in the doorway, twisting his fingers while trying to keep his eyes off him.
“Uh… if you say so, Kacchan.”
Izuku backs up, and he feels his blunt nails carve into his palms as he balls up his fists. He’ll be damned if he lets him walk away with the impression that his penis is abnormally small.
“Hey!” he catches Izuku mid-turn, “You’re saying that because you haven’t seen it hard.”
His defensive tone does nothing but thicken the tension in their small bathroom.
There’s not much he can do to turn back now. The blush on Izuku’s face only deepens as his mouth fishes open. His pale hands contrast against the deep red color of his face as he covers it.
“What do you mean?” Izuku’s voice is starting to get high and breathy.
“I mean you need to see it hard before you do shit like call it small.”
Izuku shifts his weight from one sock-clad foot to the other. He can’t help but narrow his eyes at the fact that he’s wearing two different socks. No matter how many times he barks at him for organizing his socks properly, the other never seems to care enough to pair them after washing.
“I… don’t know what you’re trying to say, Kacchan.”
“I’m saying you have to see my dick hard before you try to call it cute and shit.”
A muffled hitch comes from behind Izuku’s thick hands before he gently drags them down to drop to his sides.
“Are you saying I’m allowed to touch it?”
Well, he’s not going to say that out loud.
The tight, anxious expression slightly changes into something that can only be equated to primal. There’s not much distance between them. It only takes a couple of broad steps for Izuku to close the gap between them. He can now feel his shaking breaths fan across his own lips.
“Kacchan…”
The childhood nickname barely reaches his ears, even in their close proximity. As quick as the confidence comes, it disappears once Izuku seems to realize the position they’re in.
“If you just sit here like a dumbass, you can just fucking leave.”
“But—“ He watches Izuku’s throat bob as he takes a deep swallow before continuing, “I think… I mean… I really, really want to touch it.”
Katsuki raises his brow up at Izuku, “You want to touch it. Wow, fantastic. You’re still boring. There’s no chance you’ll get me hard.”
“No! I can—“ Izuku steps closer and he feels something hard hit his knuckles.
“Deku…” he flicks his chin to look down, “what the fuck is that?”
Izuku squeaks, “I’m sorry! I can’t help it. Yours is just so little, and… and… I like that.”
“There’s something seriously fucked with your brain. You’re hard because you think my dick is small? You obviously have some sort of mutant dick. It looks like you have a boulder shoved in there. It’s… huge.” he scoffs the last word as if he’s disgusted.
He’s not jealous.
“Nuh-uh!” Izuku takes a minuscule step back, “Kacchan, mine is average.”
“No, it’s not. Yours is stupid fucking huge. There’s no way anyone would want to be fucked with it.” Izuku lets out a soft groan and inadvertently bucks his hips against his fingers again, “That’s why you think mine is so small. You're just an idiot, like always.”
“Kacchan!” an irritated scowl twists on his face, “You need to stop now. You’re being kind of mean. I said I like your small penis.”
“Why would I fucking care if you like my penis or not? I told you to get me hard, and you’re just standing there! Absolutely useless.”
The shifting of his eyes stops as they zero back to focus on Katsuki’s front. They sit like this for a moment, while Izuku deals with an internal battle of some sort. He almost feels sick just watching his eyes dart across his body, like he’s mapping out every inch that he can see.
“Kacchan,” Izuku brings his attention back with more of an authoritative tone, “how do you want me to get you hard?”
He scoffs, “Do I have to do everything for you?”
“Well… no, but I do need your consent to do this. Especially because after this everything is going to be… different.”
The rush of doing something he knows is wrong swirls in his core. It’s normal to feel like this. He’s even dreamt of similar events like this one. Everyone has had dreams of fucking their best friends.
Right?
“Just… fucking do something,” he pauses before spitting out the demand.
Hopefully Izuku doesn’t pick up on the slight waver in his voice. Though, he knows well enough that Izuku has him exactly where he needs him. There’s always a plan under that mop of green curls.
Izuku’s chest slightly caves in, releasing his shoulders, as if he’s been holding his breath.
“Can I… uhm… call it names?”
It as in his penis?
Izuku’s question renders him uncharacteristically speechless. His jaw hangs in vain, but quickly snaps it shut with a light clack of his teeth. The flustered man in front of him seems to take it as an opportunity to continue.
“I mean, I could uh… call it a clit?” Izuku whispers to him as if anyone could hear them in their private apartment.
Jesus Christ. Instead of seeing a bright blush on Izuku’s face, he feels a hot blush fan out across his own cheeks, spreading from his cheekbones to the tips of his ears and the back of his neck.
“I’m a man, Deku. Call it what it is.”
The bite in his words is becoming less forceful as his resolve begins to slightly crack.
“It might as well be a clit.”
A choked noise comes out of his mouth, and he presses his shorts to suffocate his dick even more, “Shut the fu—”
“What I mean,” he cuts him off, “you feel pleasure, but there’s no way you could effectively penetrate someone.” Izuku seems to be analyzing his genitals, “Sounds more like a clit than a cock.”
He feels Izuku’s calloused fingers grip his waist and scrape down his smooth skin as he gently settles himself down on his knees.
“You fucking—god damn it! You’re an idiot! I can fuck someone just fine,” he glares down at Izuku’s kneeling form.
Izuku’s eyes challenge him.
“Well, I bet your little clit doesn’t get any bigger when you’re hard.”
There’s a pause. It’s a moment long enough for him to process his words. When he tries to take a step back, Izuku’s hands shoot out to grip his hips to keep him in place. The new touch shocks him back into action.
“Hhh—hey! Let go, Deku! Damn creep.”
Izuku bites the inside of his cheek, like he’s weighing several different options. Katsuki wouldn’t be able to tell what any of those could be.
“I could suck on it.”
The proposition piques his interest. A smirk settles on his face with the thought of him being the one to get off.
His smirk and thoughts did not last long.
“C’mon Kacchan,“ Izuku pleads, “let me suck on your clit.”
Izuku leans forward to press his face into his shorts that he still has clutched to him. He doesn’t respond, he can’t respond, as his chest begins to cover and reveal the pleading look from the man on his knees with each heavy breath he takes.
The grip on his control is getting weaker by the minute. The way Izuku is talking to him makes him feel powerless. He’s going to kick his ass after this is over, but right now he just needs to get off
Sitting back on his haunches, Izuku lightly brushes his fingers against his whitened knuckles, wordlessly asking him to drop his shorts.
“I want to see, please.”
Something he didn’t expect to feel after hearing the beg in Izuku’s voice, is a deep, twisting heat in his gut. With the melt of his resolve, he lets Izuku gently unclamp his tight grip on his shorts, one finger at a time.
“There you go,” Izuku mutters the praise, almost to himself.
He gasps when Izuku tilts his head and rubs his lips gently on his short shaft. The soft, wet inner part of his lips leaves a trace of dampness in its wake, followed by a light scrape from the more rough, slightly chapped part of his lips.
The fight in him fades more as Izuku ignores his glare and continues slowly dragging his lips up to his leaking tip, “Pretty girls aren’t supposed to be so messy.”
An involuntary thrust pushes his cock against Izuku’s plump lips. The tightness of frustration twists in his chest.
“I didn’t fucking say you could do any of that freaky shit.” his voice is weak after keeping his mouth shut for too long.
If he doesn’t do something now then Izuku’s going to fucking—
“Do you want me to stop? I’ll stop if you want me to.”
A weird, unknown feeling twists in his chest. Now facing the prospect of Izuku actually stopping, he quickly realizes that when he stops he’ll be alone and horny.
“No,” he shamefully submits.
The power now rests in Izuku’s freckled hands. In his defense, he’s always proven that he knows what to do with that overwhelming power that seems to always fall into his damn lap.
“Tell me you want me to suck on your clit, Kacchan.”
Pause.
Izuku saying it is one thing. It’s entirely different if he says it himself.
”Go to hell,” he snaps.
Izuku smiles up at him and shifts his hand to soothingly rub against his hip.
“I’ll just stop, Kacchan. Bad girls who don’t listen aren’t really my thing.”
His eyes widen in a surprise panic.
“Wait! Dammit. Fucking Deku.” he takes a deep breath that does nothing for his racing heart, “Suck… suck on… my—my clit. There! Happy?”
“I knew you could be a good girl. I just needed to tease you a little bit.”
A dirty moan vibrates his chest. Unfortunately, he’s unable to stop it from happening. It’s definitely not because he wants to be a good girl, it’s because he wants a damn orgasm.
If he were in his right mind, he’d probably smack the grin that’s currently pulled tight across Izuku’s freckled cheeks.
Not that Izuku was going to give him enough time to consider doing that anyway, because in less than a second his hot mouth quickly sucked Katsuki’s cock in.
Izuku moans over his own as if he were the one being pleasured. The freak is absolutely sick.
“Oh, fuck,” he grits out and cards his fingers through Izuku’s curls.
The feeling of his thick tongue massaging the underside of his shaft sends heated sparks through his core. Nothing could have prepared him for the feeling of Izuku’s wet, hot mouth swallowing his dick.
A needy, uncharacteristically high pitched whine claws its way out of his throat as Izuku hollows his cheeks to tighten around his twitching cock.
To his disappointment, after only a few more shallow dips, Izuku pulls off with a light pop.
“Look here,” Izuku smirks,“still so little and cute. Useless, like me, right?”
“No!” he gasps and throws his head back as Izuku loosely circles his index finger and thumb and pumps his spit slick cocklet slowly, “I need… god. I need more.”
“C’mon. I’m not going to let you come if you can’t tell me how useless this clit of yours is.”
“There’s—there’s no way in hell I’m doing that,” he stutters.
“Guess my pretty girl just isn’t desperate enough, hm?”
There’s no telling where this confidence is coming from, and it’s making it difficult for him to gain back the control he had just moments ago.
It’s all so cruel considering he already called his own cock a clit. Izuku’s just being a fucking greedy tease.
Izuku brings him out of his thoughts when he brings his lips back to the tip of his leaking member, letting his precum drip onto his lips as he continues to teasingly pull on his desperate, red dick.
“I’m… I’m not desperate,” a needy whine escapes his chest as he bucks his hips forward.
“I think you are, Kacchan,” his mouth moves against him.
He clenches his eyes and shakes his head back and forth.
“N… no,” he pathetically lies.
“Hmm,” Izuku taps the head of his cock against his lips as he ponders from below him, “Maybe you need to see it next to a real cock to actually admit what yours truly is?”
He lets out a shuddered breath when he feels Izuku begin to hoist himself to stand up.
The feeling of the cool bathroom counter bites into his hips when he’s turned to face the mirror. In this moment, he realizes he’s the only one completely naked when Izuku’s clothes meet his burning skin.
“What are you—?”
The words are punched from him when he looks at Izuku through the mirror and watches him spit into his hand. His hand disappears behind his body and the sound of Izuku wetting his cock is obscene.
“Wait, what are—“
The cut off silence rings in his ears as Izuku pushes his cock between his shaking thighs. With nothing to distract him, he feels every inch of Izuku’s cock push through. He drops his head to watch the tip of Izuku’s cock push under his own.
Dammit.
He’s right. Izuku is fucking right.
Katsuki holds not even a small flame to Izuku’s size. The entire length of his dick barely passes the tip of Izuku’s dick, which is barely sticking out of his thighs.
“See?” Izuku’s hand cups under his own to press their cocks together. “This is what a real man’s cock looks like.”
Izuku tightens his grip as he begins to roughly pump them together. Once the pace was to his personal liking, Izuku begins to thrust. In just a handful of pumps, he feels his balls draw up as a familiar feeling hit his gut. The stimulation of Izuku’s hand on top and the wet skin of his dick under his own cocklet is just too much, but not what he needs to push him over the edge.
“I wanna—ngh—wanna come.”
The embarrassing beg sounds foreign on his lips.
“You know what to do. I told you what I want to hear.”
“Please… pl—please rub on my… pathetic clit and make me come.”
“There you go, such a good girl.”
The praise, being called a good girl, is not something he’d ever think he’d enjoy, but the way it rolls off of Izuku’s tongue in that husky voice has him arching his back and gripping onto his biceps.
A sore, oh-so-good, sting rips between his upper thighs as Izuku picks up to a brutal, punishing pace. Exactly what he needs.
He has no strength to do anything but moan into Izuku’s neck, lightly mouthing between each gasp. Just a few more seconds, he just wants a few more seconds, of this overwhelming pleasure, but before he can tell him to slow down, an orgasm is torn from him.
With a white flash and a desperate cry, he releases into Izuku’s hand and coats the larger penis under him with pitiful squirts.
“S’good,” Izuku slurs from behind him, “just a… just a little more, Kacchan.”
Izuku continues pumping their cocks together. He lets out a weak protest from the overstimulating sensation of his rough force. Though, he can’t really tell if that means he wants him to stop or not.
“So good for me. You’re so good, pretty. Maybe next time I’ll suck on your pussy too.”
“Oh my… oh my fuck—“ he cries as another orgasm is shocked out of him.
Just the notion of Izuku eating him out is enough to bring him over the edge and into a breathtaking orgasm.
“What a greedy girl—fuck—you are,” Izuku gasps and rubs his face into his neck and bites down.
Izuku lets out an animalistic growl as Katsuki feels the wet release spread over both of their cocks. With a couple more confident tugs, he lets Izuku ride out his orgasm.
“Ngh,” he groans as Izuku pulls himself out of his sore thighs and turns him around to wipe his sticky body down with a damp rag that he got out, god knows when. “You’re the worst, Deku.”
He blinks his eyes open as a soft smile settles on Izuku’s lips.
“Whatever you say, Kacchan,” Izuku giggles.
He responds with a grunt and just lets Izuku finish cleaning him up, showering him in blissful silence.
The silence is needed. The two know that everything has changed.
But that’s a conversation for later, possibly after he sits on Izuku’s face.