Work Text:
“Deku.”
It was fairly common knowledge that Izuku’s brain worked far too fucking fast. He considered too many factors, too many possibilities, too many extraneous variables that didn’t at all matter, and it was almost visible when his head was filled with thoughts and ideas that didn’t require even a quarter of his processing power but were still being carefully considered and taken apart like a complex math problem.
A few years ago, he had walked Katsuki through the intense, research-laden process he used to figure out the best restaurant to ask him to for their first date. How he almost didn’t because he was worried the weather wouldn’t suit the occasion or some bullshit, like Katsuki cared whether or not there was a five degree deviation from the forecast while they chatted over their work at their respective hero agencies. Or worse still: if the walking distance was thirty seconds more than the average distance to a restaurant closer to work, and Katsuki maybe would consider it cumbersome? Maybe he should just offer to drive, but what about how he got home at night?
To which Katsuki replied he was a recognizable pro hero that can literally explode shit with his hands. He didn’t see the problem.
But still. As the years passed, Katsuki could see it for what it was. Izuku’s anxieties surfaced as a need to be hyper aware of everything, down to the most improbable possibilities, and it helped him feel more in control of the situation if he had a plan for even the most ridiculous, specific ideas.
Which was why, at present, Katsuki was watching with narrowed eyes as Izuku paced through their living room (seventeen steps one way, sixteen the other, because of the way he pivoted on his foot) and narrated every possible outcome of his speech the following day. Really, it was less than a minute long, since he was just going to cut the ribbon on some community center he spearheaded the effort to get built, but Izuku was halfway through his dissertation on how some villain that was put away five years ago could cause catastrophic damage, which would require him to immediately assess how big the crowd was and what pro heroes were in the audience, and then what combination of quirks he could use to -
“Deku.” Katsuki repeated, since Izuku probably hadn’t heard him over how Round Cheeks and Frog Eyes’s quirks could be used together.
Izuku’s halt wasn’t entirely clean, and he stutter stepped to a stop. Katsuki could see the anxious energy, it was almost as visible as the sharp electricity of One For All, and it manifested in the smallest twitches in his fingers and the half bounce on his feet as if he needed to be ready to leave at a moment’s notice.
This was getting out of hand. Typically, Izuku would burn himself out in about twenty minutes, either his possibilities being exhausted or with the acknowledgement that he was overthinking and should just go to sleep. But Katsuki had come home to see Izuku’s brows creased in worry, his lower lip plump from being chewed on. He wasn’t used to big events, it left everyone too vulnerable, and he was overcompensating for his lack of experience by wearing a rut into the floor.
Two hours was Katsuki’s guess. Icy Hot had mentioned Izuku had asked him about crowd control in a large space, and they had discussed it for half an hour. Katsuki had come home to start dinner an hour after that, and he was sure that space was occupied by research and probably skimming through one of their high school textbooks.
Izuku’s gaze, when he finally lifted it to meet Katsuki’s, was tired and frazzled. This was something he was more than capable of handling, he could probably kick a villain’s ass with three limbs tied and in his sleep in the incredibly slim chance that something negative actually did happen.
But that wasn’t what was going through Izuku’s mind. His head caught on those slim chances and tiny fractions and filled with noise.
What he needed was quiet.
Katsuki stood, deciding that it wasn’t productive anymore to field Izuku’s anxieties and questions, and crossed the room to meet him.
“Ka-” Izuku began, and Katsuki could see that worry flare up like water rising to a boil as his lips pursed in an effort to keep his tirade from continuing.
“Stop.” He said instead, his voice quiet and low but sharp enough to slice through the bullshit in Izuku’s head.
Of course, the bullshit was not going down without a fight, and Izuku sighed through his nose, looking away. “Kacc-”
“Deku.” Katsuki repeated, louder this time, and Izuku’s eyes snapped back to Katsuki’s as if on instinct alone. He held his gaze, slowly coming forward so he was emphatically in Izuku’s space, enough that it forced Izuku to incline his chin slightly to meet his eyes. Katsuki drew up his posture slightly, adding an inch or so to his height.
Izuku’s sigh, this time, was shuddering.
There was white noise, always, in Izuku’s head. Errant thoughts, worries, troublesome memories. Regrets. That need to always to better. He could see it in his eyes like static on an old TV, and Katsuki was going to pull the plug.
“Deku, kneel.”
It was at least a short circuit. A power outage. Izuku’s eyes went wide, and where worry had made his face colorless, surprise made his cheeks burn stark red. Katsuki watched the impulse to fall to his knees travel down his spine and make his legs tremble for just a second, but he was resisting it, even though Katsuki could practically feel the magnet pull.
Izuku pursed his lips again, bit them between his teeth to bring back feeling as if they had gone numb. “Kacchan, I don’t-”
Katsuki felt his expression draw into a scowl, and he fixed Izuku with an irate look that immediately made him think better of whatever bullshit he was about to spew and shut his trap. He was still holding eye contact though, and where in the moment he had taken a half step back, Katsuki came forward, evening the distance between them again. His head tilted slightly to the side, his eyes narrowed in challenge. “I’m not going to tell you again.”
It was an order Izuku was used to, but Katsuki knew he liked to test his boundaries. He needed to know the limits of his control, and what exactly he could get away with. More stupid thoughts and white noise, challenges and games that were fun on occasion. Katsuki’s tolerance for that bullshit was at zero, because it was the opposite of what Izuku needed.
So when, instead of obeying, Izuku threw a glance over his shoulder at the windows behind them that definitely did not have the blinds drawn, as if to ask if they were really doing this here, Katsuki’s hand whipped out and snatched Izuku’s jaw. He froze, allowing Katsuki to slowly turn his head so he could force him to look him in the eye.
He had meant it; he wasn’t going to repeat the order. Izuku’s gaze went from one part of his expression to the next, analyzing the haughty rise of his chin, the uncompromising seam of his lips, and the way his brows were drawing together ever so slightly - and eventually came to the conclusion that Katsuki was not fucking around. Finally.
Katsuki watched that static fuzz so easily reflected in those evergreen eyes of his slowly begin to recede, and Izuku’s taut frame begin to relax. In the standoff, as the seconds ticked by, his jaw slowly began to unclench, and his posture loosened. Katsuki’s grip on him relaxed the second before Izuku gave in, and he sank down to his knees.
He let him compose himself, as he always did. Resisting Katsuki was almost as ingrained as submitting to him was, and it sometimes took time for him to settle. Slowly, Izuku folded his legs under himself, his ass resting on his heels, his hands clasped behind his back. The proud line of his jaw dropped, his chin almost meeting his chest as his eyes fluttered shut, and finally, his shoulders slackened as he murmured “Yes, sir.”
Truth be told, he was used to seeing completely bare like this, every inch of muscle and sinew on display. Izuku had long ceased feeling ashamed of any part of himself, so it reminded Katsuki of how Izuku used to insist on intimacy with at least one piece of clothing on, or under the covers, or with the lights off. And, admittedly, it also made his cock twitch to seeing such submission in a different setting: Izuku’s loose work clothes, the button down and slacks he typically wore over his costume, almost made him look a little rumpled and roughed up already.
Instead of indulging that, Katsuki turned his focus to the matter at hand. “Yes, sir,” was Izuku’s “green, very green” in terms of safe words, and it was his signal that he was ready to stop being a brat and obey. Or at least consider it, but Katsuki didn’t see the need to convince him of as much at the moment.
He came forward, slipping his fingertips over Izuku’s scalp to card through his hair, and he felt even more tension leave through his breath as he relaxed under his hand. Idly, he pet the untamed mass of green curls, waiting for Izuku’s breathing to become even and slow, and eventually reached to trail his fingers down and stroke over his cheek. Predictably, without opening his eyes, Izuku turned his face into his hand like a cat pleading for more, and Katsuki allowed a small smile to cross his features.
“That’s better.” Katsuki’s praise was backhanded, but it always had the same effect. The corners of Izuku’s lips quirked up in a smile of his own, significantly less cheeky than Katsuki’s. He loved to please, even if he was a little shit. “Are you gonna listen?”
Izuku’s head dropped once in a nod, then immediately pressed back into Katsuki’s hand. “Yes, sir.”
“Good, Deku.” He rewarded him by skimming his thumb over his jaw, and Izuku raised his chin, opening his eyes to look up at him. His eyes were hazy, but things were quieting to a more manageable din, if his slow, easy breathing was anything to judge by.
Katsuki let it remain like that for a few minutes. Instead of using it as a demand that he back down, he held Izuku’s gaze instead as an assurance. One hand held his cheek, smoothing over his freckled skin, and the other ran its nails over his scalp, and Izuku was looking at him with his eyes in content slits.
Eventually, his eyes slipped shut, and Izuku’s head dropped again - this time, which his forehead just resting against Katsuki’s upper thigh. He was still waiting on his order, Katsuki knew, but he was content to let Izuku lean against him for a little while. He slipped both hands into his hair, massaging his scalp and lightly pulling on the ends of locks of his hair close to the nape of his neck, just to watch goosebumps raise over the exposed parts of Izuku’s arms.
On one of the trips down the back of Izuku’s scalp, Katsuki’s hand stopped, then gently gripped a fistful of dark green hair. Izuku’s breathing caught, and Katsuki used his grip to guide Izuku back to sit back on his heels, and then to tilt his head back. Izuku’s eyes were trained on every movement, but Katsuki didn’t give him time to think.
Bending at the waist, he leaned down to kiss Izuku’s temple, and then his lips. He kept it light, even as he felt Izuku’s arms tense as if they wanted to unlock from behind his back of their own volition. When he pulled back, Izuku made a sound of protest, his chin tilting up for more, but Katsuki gave a small tug to his hair, and it was effectively cut off.
He silenced the part of his brain mumbling dumb shit like that was adorable.
Experimentally, he gave Izuku’s hair another tug, and as Izuku’s tongue darted out to wet his lips, he could hear the question he wanted to ask, if he was given permission to speak: what do I do? What do you want me to do?
Please tell me what to do was the core of it. Izuku was a control freak; he needed to know all of his damn ducks were in a row, everything was present and accounted for three times over, and that six contingency plans were in place in case of error. But when it came down to it, what gave him peace, what give him quiet, was allowing himself to be subject to Katsuki’s control.
It made things quiet in his head when he was allowed only one task in his mind, and was required to be utterly single minded about it.
So after Katsuki bent him back, feeling Izuku’s trust that he would prevent him from falling and subsequently kissing him hard enough to make his head spin, finally opened his mouth to speak.
Even in his breathless daze, even if the only thing keeping him from knocking his head on the hardwood floor was the biting grip on his hair, Izuku knew Katsuki wouldn’t repeat himself. When he took a breath like he was going to give an order, Izuku was at full attention. His body was loose, but his mind wasn’t, and even in such a stretched, uncomfortable position, he strained to hear what he was sure would be a command.
Instead, Katsuki’s lips curved when he felt Izuku tense, and he murmured “Be good.”
The effect was immediate. Izuku’s full lips pulled into what could be described as a pout, disappointment evident in his expression. He bit back what was sure to be a noise of frustration, because that certainly was not being good, and instead had to fight to fix his expression.
He had to let his smile turn a little smug. Izuku’s frustration stemmed from the one task he was given - the one thing he had to be absolutely meticulous in accomplishing - was being good. All that wonderful, powerful mind had to do was be good. He had caught the almost-glare Izuku wanted to give him, and his smirk had quickly turned into a grin.
Izuku can be frustrated all he wanted. The fact was that instead of his brain working through scenarios 1A through 36Q of the ribbon cutting, it was tasked with ensuring that he was a good, obedient Deku. A good, obedient Deku who couldn’t complain, wouldn’t gripe, and certainly had a neutral expression when given such a simplistic task.
And Katsuki loved watching his mind work. That peace he achieved before was broken by his disappointment, but immediately he was working to resolve his mistake. His muscles loosened one by one, from his toes all the way back up to the slight furrow of his brows. He let out a slow sigh, averting his gaze once more to avoid challenging Katsuki, and after composing his expression back into placidity, he replied “Yes, sir,” quietly.
Too quietly, in Katsuki’s opinion. Absently, he nudged his foot between Izuku’s knees, and when his legs automatically parted, he rested the ball of his foot right on the apex of his thighs. It was enough to break Izuku’s composure, red seeping down to his chest this time, and he sucked in a startled little gasp.
“What was that?” Asked Katsuki, pulling a bit more tightly on Izuku’s hair, and watched as much as he felt the shudder that rolled down his spine. His eyes were squinted shut, and Katsuki knew the decision that had to be made. Which was being good? Being quick, or being calm?
“Yes, sir!” The answer came almost instantly. Speed over composure, given that Izuku’s voice was a high keen and a breath away from a moan. He could practically see the uptick of his pulse in his throat, and impulsively, Katsuki dipped to press a kiss on his stained pink skin. Just with his lips against the thin skin, Izuku was already struggling to keep his breathing even.
His body was held still, and even it made it difficult to get a good breath difficult, he scarcely allowed his chest to rise and fall. Just as he knew Izuku wanted to know what to do, he also could tell his frozen frame was another question: was that good enough? Do I need to repeat myself? How do I prove-
He choked on a gasp as Katsuki sank his teeth into the fleshy part of his neck, his hips jumping in an attempt to appeal him into giving just a bit more pressure. The tension of his back broke, and Izuku must have unlocked his hands in an attempt to try and grip some part of Katsuki for some stability. Katsuki’s thought was confirmed when he felt a feeble hand grip his shirt, and he growled in response - but the hand didn’t falter or correct itself.
When Katsuki pulled back, licking the taste of iron from his teeth, to glare at him for his disobedience, one glance at his face told him he wasn’t just dicking around. Izuku looked overwhelmed, his breaths pulling in quick and ragged, and his grip on him was still firm. Katsuki paused, tilting his head at him for a second while quirking a brow upward. He could usually take much more than that, did Izuku need a safeword?
No. Izuku calmed shortly after meeting his eyes, only the sound of his slowing breaths making any noise. “Deku.” Katsuki decided he needed a reminder, since Izuku hadn’t corrected himself.
Izuku swallowed but nodded, his hand begrudgingly loosening from Katsuki’s shirt to go back behind his back.
“Do I need to get out the cuffs?” Katsuki asked, but it wasn’t provocative. If anything, it was slightly teasing, since they had encountered this problem before, and Katsuki wasn’t looking to escalate things.
“N-no sir,” Izuku gave a little jerk of his head, licking his lips once more to keep calm as a slight shift in Katsuki’s posture put pressure on his crotch. Katsuki, pointedly looking down, set his foot down so that if Izuku moved, he would grind against his shin.
“Good, Deku.” Katsuki praised him softly, slowly bringing him back up so his back was straight. Izuku gave a shuddering sigh of relief, his chin dropping slightly to the side, covering the bleeding mark on his neck.
Katsuki clicked his tongue. “Head up, Deku. Look at me.”
He seemed to wait a beat, half anticipating Katsuki to do it for him, given the still tight grip on his hair. But his head came up, and he looked up at him with blown pupils and his lips slightly parted.
Fuck. Katsuki felt his dick come to full attention just at that expression alone, and he let out a little hiss, feeling his palms warm a little. Izuku, evidently with no fear of God, smiled ever so slightly, but it was gone by the time Katsuki actually focused in on his mouth. At least, Katsuki wasn’t sure if it was still there, because he was too busy plumping up Izuku’s lips with a hard kiss.
Izuku moaned right into his mouth, his back arching to meet him. Katsuki wasted no time with licking along his lips and slipping his tongue into his mouth as soon as Izuku opened up, and it was all Izuku could do not to let go of his hands and instead fist them in Katsuki’s hair and drag him closer. From what Katsuki could tell, that is, if the straining in his arms meant anything. He wouldn’t put it past him to activate his Quirk just to remind himself to stay still, since he had done it before, but for now it seemed like he was in control.
He decided to test it. Izuku’s head twisted any which way in his grip, so when he pulled away from the kiss, Izuku panting, just a little pull on one side of his head had his head immediately angling to Katsuki’s liking. He leaned forward and attacked the underside of his jaw, sucking a dark mark into his skin while grinding his foot hard into Izuku’s cock, and the breathless cry was more than worth it.
His hips lifted, and Izuku was rocking against Katsuki’s foot with moans that sounded as if he were getting fucked. He had the most annoying, endearing habit of catching on Katsuki’s name but never managing to finish it, so whenever he was getting close, it was an uproar of “Ka-h, Kacc-, Ka-h!” laden with these ridiculous hums. Katsuki liked to pretend he didn’t get an ego boost from it, but fuck if it wasn’t hot though when Izuku stutters out “Sir!”
And equally as hot when he cries out in frustration as Katsuki pulls away entirely, leaving Izuku wanting with his head back and slightly off balance. He might have been a little too close to the danger zone, given the way his face is scrunching up and toes are curling in an effort to keep everything on hold, so Katsuki is sure to give him a few seconds to wind down, even if he wails a particularly pathetic “Please don’t stop!”
Katsuki snorted, even if he’d absolutely love to make him cum. “Shut it, nerd. Do you wanna cum or not?” He demanded, unfastening his belt.
Izuku’s teeth were gritting, and he gave a chopped and succinct bob of his head. “Ka- Sir, plea-”
“Quit your fucking whining, then. Don’t you wanna know what you gotta do?” Katsuki asked, only allowing himself to fumble slightly with the button of his pants because Izuku still wasn’t watching. When it came open, Katsuki huffed through his nose in relief.
At the sound of his zipper, Izuku’s head came back up, and his eyes were immediately trained on Katsuki’s hand as he pulled his cock from his boxers. He licked his dry lips, blinking away wetness from his eyes, and nodded once more. “Yes, sir.”
“Good boy.” Katsuki forced himself to ignore the way Izuku’s watery eyes positively lit up at the phrase. “Suck me off, then. If you do a good job, maybe I’ll let you cum too.” He added roughly, giving himself a few strokes.
Izuku leaned forward immediately, almost throwing himself off balance once again, so Katsuki had to quickly grip his hair so he wouldn’t bust his nose. “Don’t hurt yourself, dumbass.” He ordered him, rolling his eyes.
There was definitely some amusement in Izuku’s tone when he murmured “Sorry, sir,” before leaning in once more, but he hesitated. “Can I use my hands?”
Katsuki rose a brow. Had Izuku not fucked up earlier, he would have said yes, but he needed to be reminded of the rules. “What part of ‘suck me off’ involves hands? Suck my dick, Deku.” He snapped.
He would have snapped at him again for not acknowledging the order with a ‘Yes, sir’ had Izuku not immediately and enthusiastically taken him into his mouth. Katsuki stiffened in surprise, his head tilting back softly at the abrupt tight heat, and almost pulled Izuku off by his hair so he wouldn’t cum right then and there.
But he managed to reign himself in just in time to see Izuku’s look of determination as he slowly worked the length of Katsuki’s cock further and further down his throat. He should be thinking about how what Izuku needed was a simplistic task to be wholeheartedly devoted to for an hour, and this was a mean to justify the end, but that’s fairly fucking difficult to do when his fiance is pretty damn competent at fucking him with his mouth.
It’s not as if he didn’t have a lot of practice. Giving blowjobs was one of Izuku’s hands-down favorite things to do in bed, because the selfless shit loves giving more than anything. That, and Izuku hadn’t confirmed it, but he’s almost certain he gets off on getting him off.
More often than not, after sucking Katsuki off, the problem of reciprocation is usually taken care of. But that’s a problem he actually happened to want, so when Izuku let out a particularly nice noise around his cock, Katsuki paused in his enjoyment to give his hair a little tug. “Oi, Deku. Don’t you cream your pants like a middle schooler, either, you hear me? I’ll be pissed.”
Izuku made a noise of acknowledgement that sounded more like a moan, really, and Katsuki rolled his eyes. “Seriously, nerd. You cum, I’ll tie you to the bed for two hours with a vibe up your ass or something.” Which - actually, nice. That’s something he’ll have to try.
The next noise sounded a little more lucid, and Katsuki let himself shiver a little at the vibration. Izuku was damn good at his job, and the several years they had been together gave him a decent resume when it came to sucking cock. The way he looked up at Katsuki, though, is what really sold it. His eyes were already watery, but fresh tears were running down his red face, which just made him look wrecked. It was so damn pathetic, and vulnerable, and he absolutely fucking loved it when he looked up at him with little tears clinging to his long eyelashes.
That being said, he had enough cognizance to know that this wasn’t really about him getting off, but he’d say he did a pretty good job for this part of the event. Plus, how is he supposed to last long with Izuku able to so easily work him up and down his throat like it was literally nothing? Shit’s fucking unfair.
Katsuki wasn’t the whining, gasping orgasm-er that Izuku was, so when he came, his fist just tightened in Izuku’s hair and he went still, his head lolling back in rapture while he just muttered a quick “Fuck.” He could literally feel Izuku’s dumbass satisfied smile around him as he swallowed, and he just released his hair to give his scalp a few praising scritches as he came down.
When Izuku didn’t pull off, and literally pushed down, suckling like he was about to get Katsuki off again, he snorted, tugging him back off by his hair. Hell no, he was not going for one of the squirming, oversensitive second orgasms, even if Izuku was trying to appease him.
Izuku came up coughing, turning his face into his shoulder since his hands were otherwise occupied. When he tried to speak, his voice was weak and scratchy. “Si-”
“That’s enough.” Katsuki cut him off, bending to kiss the top of his head and tuck himself back into his pants. “You did well. Do you want your reward, now?”
“Yes, yes - please,” Izuku pleaded, drawing Katsuki’s attention down to where his dick was straining against his pants. “Please, sir.”
“Good. You’ve been good, Deku.” He murmured, giving his hair a few more assuring strokes to make sure he didn’t actually start crying. After all, Izuku accomplished his task, but Katsuki hadn’t accomplished his until he was chilled the fuck out.
As he brushed his bangs back from his forehead, Katsuki murmured “Sit back. Your legs are dead after that, huh?”
Izuku nodded, careful to keep his arms locked behind his back as he slid his calves out from under his thighs, then stretched out his legs with a quiet sigh. “Yes, sir. Left leg’s asleep.”
Katsuki clicked his tongue again, coming to sit behind him on the floor, legs surrounding Izuku’s. His toes prodded at the underside of his knees, encouraging him to bend them to encourage blood flow. “You know you’re supposed to tell me about that shit, dumbass.”
He didn’t have to look to see Izuku’s stupid smile, it was in his voice, even if it was becoming desperate again. “Sorry, sir.”
“Yeah, yeah.” Katsuki rolled his eyes, wrapping an arm firmly around Izuku’s waist and trapping his arms between his back and Katsuki’s chest as he brought him close. Izuku winced a little at the stretch, but made no complaint, given that now he could rest his head against Katsuki’s shoulder.
Katsuki made short work of Izuku’s pants, flicking open that stupid hook that slacks had and impatiently pulling down the zipper. Izuku’s cock, when he slipped long fingers into his boxers to gently pull it out, was red and weeping. He curled his toes in anticipation, his eyes scrunching shut just as Katsuki gently smeared precum gently over the head.
“Huh. Desperate much?” He teased, slicking his hand up before slowly bringing his hand down to the base of his cock, and then back up again.
Wisely, Izuku kept his mouth shut, deciding that pointing out the fact that he was edged would probably result in being edged again. Instead, as Katsuki gave him long, indulgent strokes, Izuku let his head tip back and his legs fall open more, not even attempting to keep his mouth from producing what Katsuki thought of as the most whining, stupid, but also kind of sexy noises.
It wasn’t that they were sex noises, it’s that they were so damn open. It was unadulterated pleasure, okay, he wasn’t even trying to hide it. Katsuki wasn’t sure if he thought it was hot or if it really grated on his nerves, because they were just so damn vulnerable. He would have called it embarrassing if he didn’t exclusively make those pathetic noises for him, and him alone.
Izuku’s heels dug into the floor, his hips canting upwards, but Katsuki held him firm, refusing him even that bit of autonomy. This may be his reward, but he was still under Katsuki’s control, and if he thought he had even the slightest bit of wiggle room, even now, it would probably ruin what he was trying to accomplish with the agonizingly slow pace.
“Sir - God, please, please,” Izuku was pleading after mere minutes, “Faster, it’s not-”
“It’s not enough?” Katsuki demanded in his ear, delighting in Izuku’s shudder. “Are you saying you can’t cum like this?”
He gave a roll of his hips into Katsuki’s hand, his back arching with this ridiculous half grunt. “Yes!”
The sadist in Katsuki considered stopping altogether, but he thought better of it. “Aww. What do you want me to do about it?” He taunted, just catching a glimpse of fresh tears on Izuku’s face when his head thumped against his shoulder.
“Please! Faster, harder - anything!” Izuku shouted, doing his little shift where he moved his weight from his heels to his hips in an attempt to squirm when he was immobilized.
He snickered, nose in Izuku’s neck. “So. Why should I do that?” He continued, and his pushing would be clear if Izuku wasn’t so damn desperate.
Izuku sucked in a few breaths, his chest rising as if he couldn’t get a good breath. “I - I need to cum!” He cried out, damn near the same volume and passion as when he was shouting a speech to some villain who didn’t give a damn. Honestly, that was enough for Katsuki, given that he could literally feel his arms tense and tremble, and he knew wholeheartedly that was literally the most important thing to him right now.
But he didn’t stop there, he let out a sob and continued “Please - please let me cum, sir, please-” babbling like Katsuki hadn’t already acquiesced and was literally already giving him exactly what he wanted.
His voice hitched in pitch, and yeah, Katsuki could tell he was there based upon that tiny “Kacchan,” that escaped his lips as he tried to push up and out of Katsuki’s grip to arch his back. Melodramatic fuck.
And when he came down, it wasn’t just a normal sigh. Izuku went limp, effectively going slack against Katsuki’s chest as he worked him through his aftershocks. After he tucked him back in his pants, he slowly loosened his grip from around Izuku’s waist, but apparently the little shit was just down for the count, seeing as he didn’t move his arms.
With a sigh, Katsuki wiped his hand on Izuku’s shirt, just to see if it would revive him. When it didn’t, he gently eased his arms out from behind his back, running his hands firmly down his muscles to make sure and get the blood flowing, although after a few more minutes of quiet he was starting to get worried.
“Oi, nerd. You still in the land the living?” Katsuki asked, having progressed to absently rubbing his wrists.
Izuku’s head moved, and he muttered some vague response about being sleepy.
“Yeah, clearly, you’re wrecked. But are you okay?” He pressed, ducking his head to rest his chin on Izuku’s shoulder so he had to look at him.
When Izuku looked back, his eyes in sleepy slits and his dimple on display, Katsuki could hear the silence ringing in his ears, and decided that was enough. “Alright, alright. Wanna go to bed?”
He gave a vague noise of agreement, and Katsuki snorted. “You’re going to bed at a reasonable time, that’s new.”
“Kacchan, it’s like nine.” Izuku hummed, “That’s really early.”
“If you’re going to do the nonresponsive thing, you still have to shut it even when you wanna do your dumbass backtalk. Sit up for a second.” Katsuki eased him up, and when he was confident Izuku wouldn’t bust his nose or something, he stood, then whisked Izuku into his arms, bridal style.
“Really?” Izuku snorted, head against Katsuki’s shoulder as he carried him from the living room to their bedroom.
“Really. You’re a wooden doll, Deku.” Katsuki agreed, setting him down on the edge of the bed so he could ease off his pants and start working open his button down.
Izuku rolled his eyes, but when his clothes were off, he leaned up to kiss Katsuki’s forehead gently. “Hey. Thanks.”
“Don’t mention it, nerd. Get in bed.” He tsked at him, making a vague shooing motion as he took Izuku’s clothes and went to go strip in the bathroom. Where the hamper was. Because he kept the damn place clean.
When he came back in his usual undershirt and boxers to sleep in, Izuku had turned back the covers, and was slipping into bed. Katsuki pulled him to his side of the bed, slipping an arm around his waist and tucking Izuku’s head under his chin. Izuku laughed softly, his hand finding its way to Katsuki’s side to trace over gently.
“Hey. Kacchan.” He said, tangling their legs together.
“Go to sleep, Deku.” Katsuki responded, and Izuku laughed again.
“I am! But I love you.”
It made some stupid feeling well up in him, like it always did. A warmth, right in his chest, mixed with those weird butterflies in his stomach. Followed by an urge to hold Izuku close to his chest and never let go.
He figured that’s basically love.
“Love you too, Deku.”