Chapter Text
Crimson eyes followed Izuku as he darted out of the study, his freckled cheeks tinted a light pink. As soon as the greenette was out of earshot, he snorted.
“Fucking nerd...what has him flustered this time?” he wondered out loud.
Looking away from the doorway with a sigh, he reached up to pinch the bridge of his nose, nudging his glasses up slightly.
“This fucking case is going to drive me up a goddamn wall.” he bit out as he picked up a manila folder and opened it.
He glowered at the image of a woman with flowing brown hair and honey-colored eyes inside that was clipped to her personal information. His lips twisted into a scowl as the name Himiko Toga stared back at him.
“This damn bitch...she should’ve kept her ass in Tartarus. The hell did she have to break out for? Making everybody’s life so fucking difficult…” he grumbled.
He glanced over at the desk where Izuku was sitting at not too long ago.
Well, at least Deku makes it easier to get through the day.
He looked away from the desk as his thoughts drifted to the greenette. In his oversized green sweater and light grey sweatpants, complete with All Might themed socks, he was a walking fashion disaster.
A really fucking cute one, at that.
He could still recall the faint smell of eucalyptus and mint wafting around Izuku, the fluffiness of his curls, and the way his pink lips shone in the light. They looked so kissable, making Katsuki want to ravish them until they bruised—
“Shit.” he said, cheeks flushing red at the thought.
Okay, now that’s enough. Stop fantasizing about your childhood friend that you have a crush on and get back to work on this case, he told himself.
Grabbing for one of the papers he looked over previously, he scanned the material once more in hopes that the information would replace his thoughts of the greenette.
But of course, his silent plea wasn’t answered.
Never in a million years did the blond imagine that he would’ve fallen head over heels for his childhood friend, but here he was. After working through his emotions and doing a little bit of exploration with his sexuality, he came to accept that he was gay and also embraced his crush on Izuku. But, he kept those feelings bottled up because he could tell that the greenette didn’t see him that way. To Izuku, Katsuki was the person he admired, a close friend and, according to him during one of his many drunken ramblings, his image of victory. He could never be anymore than that.
But there were times when those thoughts would creep up to the surface like now, his mind wandering once more to Izuku’s outfit and the low cut of his sweater, exposing his collarbone. If Katsuki peeked downward, he would’ve been able to see his nipples. Arousal flooded his lower half at the thought as he imagined ripping off the greenette’s clothes, worshipping his body before bending him over and fucking into him before filling him to the brim—
“Oh god fucking dammit.” he bit out.
He really needed to stop being horny.
He set the paper down and looked down at the table as he noticed something.
“Shit, I forgot to grab some pens before I left to come here.” he said.
His gaze drifted to the desk.
“Deku wouldn’t mind if I borrowed one of his pens, would he?” he wondered aloud.
Standing from the couch, he walked over to the desk. He briefly scanned it before seeing a pen holder beside Izuku’s laptop, various hero-themed pens sitting inside. He chuckled softly.
“Of course the nerd has hero-themed pens…” he trailed off.
He grabbed a random pen from the holder and turned to walk back to the couch when something on Izuku’s computer screen caught his eye. Blond eyebrows shot up in surprise.
“What the fuck? Why’s my name there?” he questioned.
He gripped the pen in his hand as he looked back at the screen to see if he saw it correctly. Sure enough, the name “Kacchan” stared back at him.
“Weird...he wouldn’t put that down if he were writing up a report for the agency...maybe he’s transferring his notes from his hero analysis notebooks into word docs?” he scanned the desk, brows furrowing upon seeing that none of his nerdy hero analysis notebooks were in sight. “That’s not it…” he murmured.
A part of him wanted to sit down and find out why his name was in that word document, but another part of him advised him against it. He didn’t snoop around in other people’s business and he wasn’t about to start now, even if it involved his crush.
Even so, that insistent tug of curiosity continued to pull at him.
A quick peek wouldn’t hurt, right?
The blond swallowed as he slowly sat down in the chair and pulled himself closer to the desk.
“Alright...I’ll just take a quick look and then I’ll get back to work.” he said.
He scrolled up to the top, noting the title of the document.
“Caught Red-handed...huh? Just what the hell is this—“ he read the summary underneath the title and his eyes widened.
Wait...what?
“Ground Zero and...Deku? Ground Zero catches Deku writing smut about them and then he...fucks him?” he questioned.
The blond swore his soul had exited his body and began to drift towards the afterlife.
Deku’s writing smut?! About...us?! he shouted internally.
He could only stare incredulously at the screen as he tried to process everything. But it only served to make his head spin.
“Okay, hold on a minute. Deku’s writing smut about Ground Zero and Deku, which is...us. He’s writing about us having sex…” he trailed off.
A bright red blush spread across his cheeks like a wildfire as the realization hit him hard.
Okay, holy shit. So what exactly does this mean? Has the nerd been fantasizing about us having sex or something?! But that doesn’t make any sense, Deku doesn’t see me that way! He only sees him as a friend, not as anything more than that. But if that’s the case then why…? he asked himself.
His eyes then landed on the AO3 tab next to the Google Docs one. He arched a brow at this.
“AO3? Isn’t that the site where people write fanfiction or something?” he muttered to himself.
He clicked on the tab, watching as he was met with the author dashboard of user zekustan4life, whose icon was of Katsuki himself eating from a bowl of rice, a pair of chopsticks against his lips.
“What? Who the hell is zekustan4life?” he questioned.
He looked to the top of the screen and the “Hi, zekustan4life!” in the top right corner was his answer.
“Okay...so Deku writes fanfiction about us.” he commented.
In all honesty, he should’ve stopped here. He should’ve just returned to the word document, put everything back in its rightful place, and sit back down on the couch and work on his case as if he didn’t just find out that his childhood friend and crush was writing smut about them.
But he pushed on. He continued looking over Izuku’s dashboard, noting the sixty-eight works that he had written for ZeKu. They were all one-shots, some ranging from a thousand and five hundred words to eleven thousand words.
He swallowed. His curiosity brought him this far and now, there was no turning back.
He clicked on a random one-shot and began to read it. With each paragraph he read, his cheeks grew more red. Heat and arousal flooded his body as Izuku’s writing painted vivid images in his mind. He could see the greenette being forced to his knees, his pretty pink lips wrapped around his cock as he sucked him off. He could hear soft moans and hums, heavy pants and grunts, and loud slurping sounds. He knew how Izuku used to write a lot in his notebooks, but he didn’t think he’d use those writing skills to write something so erotic and downright sexy.
And it was turning Katsuki on.
His cock began to harden as he bit his lip.
“Fuck.” he bit out.
After finishing that one-shot, he moved on to read another one. He couldn’t help it; Izuku’s writing was so good and it made him even harder and his imagination going wild over the dirty things he wanted to do to the greenette.
He was so engrossed in his reading that he failed to hear the front door open downstairs nor Izuku’s voice calling out to him.
Izuku headed down the street, two plastic bags from the convenience store in his hands as he swung them back and forth slightly. He hummed a small tune to himself, a smile on his lips.
Ah, this walk was nice, even if it was one to the convenience store. My mind’s cleared up now and I can continue writing without a hitch, he thought to himself.
He looked down at the bags, one of them holding beer cans while the other had snacks and energy drinks.
“This will be helpful for Kacchan, too. He seems stressed out by that case…” he trailed off.
Maybe there was something he could do for him to help lighten the load. He’d have to ask him when he returned.
He arrived at the front door a few minutes later. Digging through the pocket of his sweatpants, he pulled out his lanyard and unlocked the door.
“Kacchan, I’m back!” Izuku called out as he entered the house.
He closed the door behind him and proceeded to take his shoes off. He glanced up the stairway as he put on a pair of house slippers, noticing that Katsuki didn’t respond.
He must be engrossed in his work, he thought to himself.
He walked further into the house and proceeded to head up the stairs.
“So Kacchan, I picked up beer, energy drinks, and snacks. I got those really spicy chips you like, too. I’m not sure what you’ll have to drink with your chips, so you can decide for your—“ he entered the study and then, his world abruptly came to a halt.
The first thing he noted was that everything in the room was still in its spot from when he last saw it. The next thing he noticed was that Katsuki wasn’t sitting on the couch but rather, was seated at his desk instead, crimson eyes trained on the laptop screen as he wrapped a hand around his chin. Then, he was hit with the realization that he never switched the tab before leaving, meaning that Katsuki was currently reading his smut.
Green eyes widened in horror, the bags slipping from his hands and hitting the floor with a loud thunk.
“Kacchan…” he choked out.
Katsuki’s head immediately snapped up, a startled look crossing the blond’s face for a brief moment before it vanished. He pressed his lips into a thin line as ruby eyes peered at him with an intensity that made Izuku shudder slightly. It was silent between them for a few moments before Katsuki spoke.
“Deku.”
The blond propped his elbows up on the desk and laced his fingers together, resting his chin atop them as he continued to stare at Izuku.
For once in the greenette’s life, he couldn’t tell what Katsuki was thinking nor what emotion he was currently feeling. Was it anger? Confusion? Disgust?
God, Izuku wanted the ground to swallow him whole.
“Ka-Kacchan…” his legs were wobbly as he made his way over to the desk. “Look, I...I can explain. I can explain all of this…” he said.
Crimson eyes followed him as he approached the desk.
“Okay then. Start explaining, Deku.” Katsuki slowly unlaced his fingers and pressed his palms against the desk, standing up from his seat. “Explain to me why you wrote about us fucking.” he said.
“I, uh...well...it’s really not what you think, Kacchan…” Izuku began.
“Oh? And what is that exactly, Deku?” Katsuki asked, crossing his arms over his chest as he peered at the floundering greenette.
“That’s…” he trailed off.
He tried to formulate a reasonable response to justify why he was writing about them having sex, but his voice failed him. The blond’s intense stare wasn’t helping the situation, either.
Sure, he was currently working on a one-shot where Katsuki caught him writing ZeKu smut and fantasized about what the blond would do to him if he found out about it. But that didn’t necessarily mean that he wanted it to actually happen!
He had landed himself in the worst case scenario that he never wanted to have happen under any circumstances and he couldn’t claw his way out of the hole he had fallen into no matter how hard he tried.
He waited for the repulsive look to appear on Katsuki’s face, for him to tell him how disgusting he was for doing something like that and thinking of him in that light before leaving. But what came out of Katsuki’s mouth next shocked Izuku to his core.
“You know, if you wanted me to fuck you so badly, you could’ve just asked.”
Before Izuku had a chance to process what was happening, he was being thrown against the bookshelf. A small burst of pain erupted in his shoulder blades from the impact, which knocked down some of his figurines. He got ready to say something to Katsuki, but the words immediately died on his tongue the minute Katsuki caged him against the bookshelf and mashed their lips together.
Emerald green eyes blew wide in shock.
Was this really happening right now? Was...Katsuki actually kissing him?
He was so stunned by the turn of events that he failed to kiss back. This only made Katsuki kiss him harder, pressing him more against the bookshelf. He blinked, noticing that Katsuki was staring back at him over the frame of his glasses. The intense stare made the greenette let out a muffled whimper as arousal started pooling in his gut.
His cheeks flushed red as the blond slowly pulled away. He rested his forehead against Izuku’s, intense red eyes boring into bewildered green ones.
“Because if you asked, I would’ve gladly done it.” Katsuki spoke, his voice dipping into a low, husky whisper.
Izuku’s heart pounded erratically against his rib cage as Katsuki swooped in for another kiss. This time, Izuku kissed back with just as much fervor. His hands traveled up the blond’s clothed chest and slid up the sides of his neck, his fingers eventually lacing together and resting at the nape of Katsuki’s neck. Tongues and teeth clashed together messily as Izuku moaned against Katsuki’s mouth.
“Ka...cchan…” drool dribbled down the side of his chin. “Kacchan, why…?” he murmured against Katsuki’s lips.
“Why what, Deku?” Katsuki shot back, pulling away from the greenette a little.
“Why would you...with me…” Izuku trailed off, finding himself at a loss for words as he stared up at Katsuki.
The blond scoffed.
“Listen here, Deku. I don’t think,” he straddled Izuku’s thigh, “you have any idea what it is you do to me sometimes.” he said.
As if proving a point, he slowly rolled his hips against Izuku’s thigh. The greenette choked out a gasp upon feeling Katsuki’s growing erection grind against his thigh. Darkened ruby eyes peered down at him as he leaned in close, his nose brushing against Izuku’s cheek.
“You,” he rolled his hips again, “drive me,” he did it once more, “absolutely mad, Deku.”
He pressed his knee against Izuku’s crotch, releasing a high-pitched whimper from below as Izuku’s cheeks flushed bright red.
“Even now, with that sweater of yours and those cute faces and sounds you’re making, you make me want to absolutely wreck you.” he crooned.
Izuku shuddered as a soft moan escaped his lips. A warm, pleasurable heat began bubbling from under the surface as he grew harder from Katsuki’s knee continuously pressing against his crotch. His mind chose that moment to finally catch up with what was going on.
Katsuki wants him. He wants him just as much as Izuku wants him.
It filled him with glee and a bit of courage. If that’s what Katsuki wanted, Izuku was more than happy to oblige.
“If that’s what you want, then...I’ll let you.” he began.
“Of course you’d let me. You’re practically thirsting for me, if your writing is anything to go by.” Katsuki pointed out.
“But before I can let you do as you please,” he placed a hand against Katsuki’s chest, “I think we need to change spots.” Izuku said.
“If you’re wanting to go to the bedroom to do this, then you’re out of luck. I don’t think I can wait until then.”
“Well, you’re in luck because I don’t think I can wait, either.”
Izuku pushed Katsuki towards the desk and forced him onto the seat. The blond could only stare hungrily as Izuku climbed onto his lap.
“Now this is better. My back was hurting against the shelf, you know.” Izuku commented.
Katsuki chuckled.
“You’re acting quite bold, Deku. I like that.” he said before bringing a hand to the nape of Izuku’s neck and yanking the greenette’s head down for another kiss.
Sparks flew once their mouths collided again. Izuku moaned needily against Katsuki’s mouth as the blond forced his tongue into the greenette’s wet cavern. Hands roamed all over each other’s clothed chests and fingers weaved through each other’s hair as they lost themselves in the kiss. Katsuki pulled away moments later before bringing Izuku’s bottom lip in between his and sucking lightly on it. Izuku sighed softly as Katsuki released it and proceeded to pepper his jawline and neck with kisses, inhaling the scent of eucalyptus and mint. Every kiss set Izuku’s skin aflame with pleasure and he loved it.
A soft moan escaped his lips as Katsuki marked a hickey on his neck. He tilted his head to give Katsuki more access, another moan being torn from his throat as Katsuki nipped at it.
“Mmm, Kacchan…” he hummed.
He gripped Katsuki’s hair as the blond’s lips moved lower, leaving teeth marks and hickies in their wake. He snarled, tugging at the collar of Izuku’s sweatshirt with his teeth.
“This is in the fucking way.” he bit out.
“Then, take it off.” Izuku said.
“Gladly.” Katsuki purred.
Katsuki pulled away and yanked Izuku’s sweatshirt over his head as the greenette did the same with the blond’s tank top. Scarred hands traveled along Katsuki’s bulging biceps and chiseled chest while Katsuki’s fingers were splayed out along the expanse of the greenette’s freckled back. Katsuki peppered kisses along Izuku’s collarbone before dipping further down towards a hardened nipple. He reveled in the soft gasps that came from the greenette as he took the nipple into his mouth.
“Oh! K-Kacchan…!” Izuku exclaimed.
His back arched against Katsuki’s mouth as he worked, swirling his tongue around the hardened nub. He sucked on it before biting it lightly, eliciting a moan from Izuku. The greenette rolled his hips, grinding their clothed crotches together. Katsuki groaned against Izuku’s nipple, sending vibrations throughout his body that made him moan a little louder as he pulled away.
“Fuck, you’re turning me on. Shit, I don’t think I can wait anymore.” Katsuki said.
He took the other nipple and tugged on it, watching how Izuku’s body jolted and shuddered with pleasure.
“Ka-Kacchan…” Izuku trailed off.
He rolled his hips once more, moaning at the electrifying friction their clothed erections created. Katsuki bit down on his bottom lip to stifle a moan as his hands moved to grip Izuku’s hips.
“You want me, Deku? Hm? You want me to fuck you, show you that the real thing is better than getting off to some stupid fanfiction?” Katsuki asked, bucking his hips up into Izuku’s.
Izuku whimpered as another jolt of pleasure rippled through him. More arousal pooled in his gut as his cock strained even more against his sweatpants.
“Kacchan...oh, Kacchan, please…” he murmured, hands gripping onto Katsuki’s biceps as he stared into darkened crimson eyes.
“Please what? Tell me what you want, Deku. I can’t give it to you if you don’t tell me.” Katsuki purred teasingly.
He reveled in the frustrated whine that came from the greenette as he grinded against Katsuki once more.
“I want you, Kacchan. Mmmm, please, Kacchan…I want you so badly, oh my god…” he begged.
Katsuki grinned.
“That’s more like it. Get on your knees for me, Deku.” he commanded.
Izuku immediately complied, sliding off of Katsuki’s lap and dropping to his knees in between the blond’s legs. He watched with hungry eyes as Katsuki palmed himself through his sweatpants.
“I bet you’ve been wanting to do this for a very long time, haven’t you? Well, now you get the chance to do so.” his hand dipped under his sweatpants and he pulled his hard cock out from its confines. “Suck my cock, Deku.” he panted out.
The greenette’s eyes widened in awe as they locked on Katsuki’s cock. It was larger and thicker than he expected, he silently noted. He swallowed, his heart hammering against his rib cage.
“Wow...Kacchan’s so huge…” he murmured softly.
He leaned in and tentatively licked a stripe along the underside of Katsuki’s cock. The blond’s dick twitched in response, which made Izuku smile. He continued his ministrations, nuzzling and dragging his tongue along Katsuki’s length. As he licked up to the tip, he locked eyes with Katsuki, who stared down at him with hooded eyes.
“You sure you can take all that in your mouth? You have a pretty tiny mouth, Deku.” Katsuki commented.
“I can do it.” Izuku replied.
“Oh?” Katsuki questioned, quirking a brow in mild curiosity.
“I can...I’ve been practicing…” Izuku mumbled, his cheeks flushing pink as he recalled the many times he’d take his Ground Zero themed dildo into his mouth while imagining it was Katsuki’s cock instead.
“How?”
“That...I used a dildo…they said that it’s supposed to be as big as your actual dick so I imagined that it was you as I was doing it...”
Izuku’s face grew hot once the words left his mouth. He could feel the blond’s gaze on him, but he didn’t dare look up.
A wolfish grin crossed the blond’s lips as he chuckled lowly.
“Of course you would’ve done such a thing. You’ve fantasized about me and fanboyed over me so much that you’d go this far, just like a perverted little slut.” he growled lowly.
Izuku whined, his cock throbbing as pre-cum began leaking from the head from Katsuki’s words.
“Hm? You like being called a perverted little slut? Of course you would, your slutty ass seems to be into that kind of shit, if your fics are anything to go by.” Katsuki’s fingers threaded through Izuku’s curls, gripping them tightly and yanking his head up so that their eyes met. “Now, let’s see if you really can take it like you claimed you could.” he said.
Izuku’s scalp stung from the rough hand in his hair, but the pain only served to turn him on more. Katsuki’s eyes blazed with such ferocity that it made Izuku want to submit to him.
And that was exactly what he did.
“Yes, Kacchan…” he spoke breathlessly.
Katsuki released his grip on Izuku’s hair and leaned back so that he could observe the greenette properly. Izuku’s eyes shone with lust as he admired the blond’s cock once more. Then, he wrapped a hand around it and began to pump his cock slowly. While he did that, he closed his mouth around the engorged tip and sucked lightly. Pre-cum coated Izuku’s tongue as Katsuki let out a hiss.
“Oh fuck.” Katsuki tipped his head back as his hands gripped the chair’s armrests. “Shit…”
Spurred on by the pleasure-filled sounds Katsuki was making, Izuku continued. He let his jaw relax a little to take in more of Katsuki’s cock and proceeded to bob his head up and down. Swirling his tongue around his erection, he used his hand to stroke whatever he couldn’t fit into his mouth.
“Mmm, fuck, Deku…” Katsuki ran a hand through his hair as he watched Izuku suck him off. “You weren’t kidding when you said you could do it. Look at you, sucking me off so eagerly like that.”
Izuku’s eyes flickered up to stare at the blond as he continued.
“Don’t you think this is better than giving head to a dildo? Hm? Isn’t sucking the real thing better, Deku?” Katsuki chuckled. “Yeah, I bet it is, seeing how you’re sucking my cock like the slut you are.” he purred seductively.
Izuku moaned against Katsuki’s cock in response. His own cock throbbed painfully in his sweatpants, but he fought the urge to pull it out of its confines and stroke himself to completion. He had to see this through and give Katsuki the best damn blowjob ever.
He momentarily deepthroated him, the head hitting the back of his throat. He moaned once more against Katsuki’s cock, inhaling the deep musky scent of the blond before pulling his head back up a bit and suckling on the tip. It made Katsuki groan as he curled and uncurled his toes.
“Mmm, fuck…!” he choked out.
His hand moved down to rest in Izuku’s hair, clenching tightly at his curls. Before the greenette was able to process what was happening, Katsuki snapped his hips up, making him choke on his cock. Izuku gasped, eyes growing wide as they shot up to look at Katsuki. His grip on his hair tightened, keeping him in place as a smirk crossed his lips.
“I think it’s time we pick up the pace a bit, don’t you think?” Katsuki spoke.
Izuku could only stare with wide eyes as Katsuki began to fuck his mouth, setting a relentless pace from the start. Izuku surrendered soon after, moaning as he let Katsuki buck his hips up into his mouth. The head slammed into the back of his throat with each rough thrust, making tears well up in his eyes as loud squelching and slurping sounds filled the study.
Everything about this situation, including the way Katsuki manhandled him was such a turn-on. He let out a needy whimper as he let Katsuki abuse his mouth.
Katsuki stared at Izuku, reveling in the sight of teary green eyes, flushed cheeks streaked with tears, and plush pink lips wrapped around his cock as he moaned around it. The sight was so erotic that it made him groan loudly, heat coursing through his veins.
“Fuck, you look so pretty taking my cock like this. I bet you’ve dreamed about me fucking your pretty mouth like this, abusing it until I spill down your throat. How does it feel to have all that finally happen, hm? You’re over the fucking moon, aren’t you? Mmm, I bet you’re enjoying this, you fucking slut.” Katsuki said.
Izuku moaned even louder in response, body trembling as the blond’s words went straight to his cock. More tears streamed down his cheeks as Katsuki continued to say dirty things to him in that deep, sultry voice of his. He brought a hand down to his sweatpants and dipped it under the band, stroking his hardened erection in time with Katsuki’s thrusts.
“Shit, I’m getting close, Deku…” Katsuki looked down at Izuku. “Fuck, your mouth feels so fucking amazing...” he panted out.
Izuku could only let out muffled whimpers as Katsuki drove closer to the edge. His climax was drawing near as well, the heat in his gut threatening to explode from how quickly he was stroking himself and the sounds the blond was making as his cock continued to slip in and out of his wet mouth.
He rolled his teary eyes up to stare at Katsuki, whose facial expression was a sight to behold. From his flushed cheeks to his lust-filled crimson orbs and the streams of praises with expletives peppered in here and there that fell from parted lips, he looked blissed out.
The fact that Katsuki was enjoying this as much as he was was enough to push Izuku off the edge. His body shuddered and jolted, a muffled moan being torn from his throat as his orgasm hit him. Streams of hot, sticky cum stained his sweatpants, thighs, and hand. It created a wet spot in the front of his sweatpants, which was fairly noticeable. But Katsuki was too busy chasing after his climax to notice.
He kept thrusting into Izuku’s mouth before cumming soon after, spilling down his throat with a pleasured groan. Izuku eagerly swallowed every drop, moaning as Katsuki rode out his orgasm. His grip on Izuku’s curls loosened and Izuku took this chance to pull himself off of Katsuki’s cock.
“Kacchan—“
Before Izuku could finish his sentence, warm hands cupped his cheeks and yanked him up into a kiss. Katsuki forcefully pried Izuku’s mouth open, eliciting a moan from the freckled male as his tongue plunged into the wet cavern that tasted of his essence. They both stood as Katsuki backed him up against the desk, the force knocking various papers and documents to the floor. Katsuki broke the kiss a few moments later, a string of saliva connecting their lips together. The blond snapped it with a lick of his lips.
“Turn around and bend over the desk.” he commanded.
Izuku complied, turning around so that he was facing the desk rather than the insanely attractive, half naked blond that was nearly pressing against his body. Closing down his laptop, he carefully opened one of the desk drawers and slid it inside. Then, he bent over the bare desk as instructed by the blond.
Immediately, Katsuki’s hands were grabbing for Izuku’s sweatpants and yanking them down along with his boxers to reveal his plump, freckled ass. The greenette’s cheeks flushed pink upon realizing that he was completely naked.
“Ka-Kacchan…!” he exclaimed as he looked over his shoulder at the blond, who was busy shimmying out of his own sweatpants and boxers and kicking them off to the side.
“Step out of these. You don’t need them.” Katsuki instructed.
Izuku opened his mouth to say something else, but the impatient, hungry look in the blond’s crimson eyes was enough to snap it shut. He kicked his boxers and sweatpants off and pushed them away. Then, Katsuki’s mouth was all over his exposed back.
A raging fire was eating Izuku up from the inside out with each kiss, hickey, and bite mark Katsuki left on his back. As he pressed a kiss to his lower back, he began to grope and squeeze his ass. Lewd moans escaped Izuku’s lips as he pressed his forehead against the desk, panting harshly.
“You like that? You like how I’m groping your ass like this, Deku?” Katsuki purred.
“Mmm...yes, I—“ a surprised yelp was torn from his lips as Katsuki’s tongue dragged up the cleft of his ass.
He gripped the edge of the desk, more breathless sounds tumbling out as Katsuki knelt down to observe Izuku’s perky ass.
“Shit, your ass is huge.” he took the other cheek in his hand and kneaded it in his hand. “Fuck, it’s making me wanna eat you right up, Deku.” he breathed out.
He continued kneading Izuku’s ass in his hands, reveling in the gasps and soft moans coming from the greenette as he lowered his gaze. He hummed a little as a smirk crossed his lips.
“Say, Deku...I didn’t notice this before, but did you make yourself cum while I was fucking your mouth?” he asked.
Izuku didn’t say anything, his face flushing red. Katsuki seemed to take his lack of response as a yes, a chuckle coming from behind as he continued.
“Were you really that desperate to cum? Hm?” a hand connected with his ass, making Izuku let out a sound that resembled a breathless moan. “Was getting your mouth fucked by my cock so hot that you got your rocks off to it? God, you’re a bigger slut than I thought.”
Katsuki smacked his ass once more, watching it jiggle from the impact as Izuku cried out, his legs quivering. A red handprint blossomed on his freckled ass as Katsuki dipped his head down in between his thighs and he began licking up at the sticky cum on them. Izuku mewled as Katsuki traveled higher. The blond parted his cheeks to reveal his pink, puckered hole.
“I gotta open you up a bit, Deku.” he told him.
Izuku opened his mouth to say something, but what came out instead was a sharp gasp as Katsuki pressed his tongue flat against his entrance. He whined, a loud moan falling from his lips as Katsuki proceeded to lick and suck around his hole.
“Oh my god, Kacchan! Mmm, that feels so good, shit…” he choked out.
Katsuki continued his ministrations before poking at his entrance with the tip of his tongue. Spreading his hole open a little, he teased it a little before beginning to push his tongue past the ring of muscle. Izuku’s eyes flew wide open at the sudden intrusion as a wanton moan escaped him.
Oh my god, Kacchan’s tongue…!
He cried out once more as Katsuki began working his tongue in and out of his ass. His legs threatened to give out from under him as Katsuki’s tongue stroked his soft, velvety walls.
“Oh my god, yes…!” he pushed his ass against Katsuki’s tongue, trying to fuck himself on it. “Yes, Kacchan, shit, shit, shit…!”
He continued babbling on as his grip on the desk tightened. At this point, his cock was fully erect again, pre-cum dribbling from the tip. Some splattered onto the floor as his body jerked forward from Katsuki’s tongue fucking him. The blond’s fingers dug into the soft flesh of Izuku’s ass as he continued to eat him out.
“O-Oh my...god, Kacchan, yes—“ Izuku keened as one of Katsuki’s hands moved to fondle his balls.
The hand on his ass continued kneading the firm flesh while the other hand alternated between his balls and stroking his hardened cock. It made Izuku’s limbs turn into jello as he moaned and whimpered from the blond’s touch. His mind grew hazy as something began to faintly buzz underneath his skin. A spark of green light entered his vision and before he knew it, cracks started to form in the desk from where he was gripping. He barely registered that he had started activating OFA when he heard a guttural growl come from behind.
“Are you so damn horny that you need to activate your quirk?” Katsuki withdrew his tongue and pulled his head back slightly. “Knock it off.” he growled.
His palm connected with Izuku’s ass once more, making the greenette cry out. A few more slaps were delivered to his ass, drawing more cries from him as OFA quieted down. Izuku swore he was going to combust from the pleasurable sting coming from his reddened ass and the hand that continued to roughly jerk him off.
“K-Kacchan…!” he choked out.
“What?” Katsuki answered.
“I-I can’t! I can’t take it anymore, I feel like I’m going to burst…” Izuku told him.
“Hm? You’re gonna burst? What, you wanna cum, Deku? You gonna cum from me jerking you off while I spank your slutty ass? Is that what this is?” Katsuki asked.
He delivered another smack to Izuku’s ass, making the greenette howl in pleasure.
“Yes! Yes, yes, I’m going to cum. Kacchan, I’m so close, let me cum. Let me cum, Kacchan, please!” Izuku pleaded.
He choked on a sob as Katsuki twisted his wrist around the leaking head of his cock. He was so close that he could feel it. Just a couple more strokes and then he’d be pushed over the edge—
Katsuki chuckled lowly as he shook his head.
“Nah, I can’t let you cum just yet, Deku.” he said.
He withdrew his hand from Izuku’s cock, which made the greenette whine in protest. He turned his head to look at the blond and start complaining, but watching him palm his own hard cock with those lust-filled crimson eyes trained on him made him reconsider. He swallowed as a wolfish grin crossed Katsuki’s face.
“You see something you like, Deku?” he asked.
“I…” Izuku breathed out, finding himself at a loss for words.
Katsuki chuckled.
“Don’t worry, you’ll get my cock real soon. Where you got the lube, nerd?” he asked.
“Uh...it’s in the top left drawer…” Izuku mumbled, motioning to the desk drawer.
“Seriously? You keep some on hand at your desk?” Katsuki opened the desk drawer and pulled out a small black bottle. “Fuck, you really do. What, do you get so horny while you’re writing that you have to jack off to it?” he asked.
Izuku bit his lip, choosing to stay silent. The blond hit it on the nail, but he wasn’t going to tell him that. But like always, Katsuki could tell what was on his mind.
“So, that’s a yes. Well, I guess it’s to be expected from a perverted slut like you, hm?” Katsuki said.
The greenette bit back a moan as Katsuki popped the bottle open and coated his fingers in it. Two lube-coated digits circled around his puckered, twitching hole before pushing into Izuku’s tight, wet heat. Izuku released a wanton cry as Katsuki watched Izuku’s hole greedily suck his fingers in.
”Wow, you took them right in.” he started to scissor him open. “I just need to open you up a little more before I can split you open on my cock. Understand, Deku?” he asked.
Izuku nodded in response. He opened his mouth to say something only for a sharp gasp followed by a moan to escape as Katsuki swiftly thrusted his fingers in and out of him. His body trembled from the intense pleasure circulating throughout as he panted wetly against the desk.
Katsuki crooked his fingers and the greenette keened upon feeling them brush against those bundle of nerves that made his mind short circuit.
”Oh my god...!” he choked out.
He could imagine the sly grin dancing along the blond’s lips as he continued to stimulate that spot, rubbing it in tantalizing slow circles. Izuku writhed and moaned from Katsuki’s ministrations, his toes curling and uncurling. His orgasm slowly crept up on him again, steadily building in his gut.
”That feel good, Deku?” Katsuki purred lowly.
“Mmmm, yes...yes, yes, oh, Kacchan’s fingers are amazing...” Izuku babbled, his mind turning into mush.
Katsuki continued, drawing more lewd moans and cries from the greenette. Then, he pulled his fingers out and reached for the bottle of lube once more. Izuku whined as he turned his head to look at Katsuki, who was busy pouring more lube into his palm and slicking up his cock.
“Alright, settle down. You’ll get my cock really soon, Deku.” Katsuki told him, his voice dipping into a low, sultry tone.
Anticipation roared in the greenette’s veins as the blond parted his ass cheeks and pressed the tip against Izuku’s quivering hole, rubbing teasing circles over it. Izuku couldn’t help but whine, shooting Katsuki a look over his shoulder.
“Kacchan, please don’t tease me.” he said.
“Tease you? I would never.” Katsuki drawled as he continued his ministrations.
Izuku whined once more, wiggling his ass against the head of Katsuki’s cock in hopes that his hole could suck it in. Katsuki snarled as he gripped Izuku’s hips to keep him in place.
“You know, Deku,” Katsuki leaned over Izuku’s body so that his lips ghosted over the shell of his ear. “If there’s something you want, you have to tell me.” he purred.
“Mmm...Ka-Kacchan…” Izuku mumbled.
“Hm? Yes, Deku?” Katsuki answered.
“I...I want…”
“Yeah? What do you want? Tell me what you want, Deku.”
A frustrated sound came from Izuku as he felt Katsuki’s cock slide between his ass cheeks.
“Your cock! Shit, Kacchan, I want your cock inside me! Please stop teasing me and just put it in already!” the greenette shouted.
“Mmmm, you want me to put it in? Alright, I’ll give it to you, Deku. I’ll fuck you so hard that you’ll forget your own damn name.” Katsuki snarled in his ear, biting his earlobe and tugging lightly.
A breathless moan was elicited from the greenette as Katsuki tugged once more on his earlobe before releasing it. He parted Izuku’s cheeks once more to reveal his puckered entrance, rubbing the tip against it before pushing past the ring of muscle slowly. Izuku choked on a moan as Katsuki rocked his hips back and forth to ease himself further into his wet, tight hole.
“Oh...Kacchan’s stretching me open…” he breathed out.
He panted and groaned against the desk as Katsuki continued to push forward. With one final thrust of his hips, he finally sheathed himself completely inside of him. They moaned in unison as Izuku gripped the edge of the desk. He swore he would cum right then and there just from how full he felt.
“God, you’re so fucking tight. It feels amazing…” Katsuki panted out.
The blond gave Izuku little time to adjust before slowly pulling out, leaving only the tip inside. Then, he swiftly snapped his hips forward, making Izuku cry out. He quickly set a fast pace as he pounded Izuku’s ass. Wanton moans and cries came from the greenette as Katsuki watched how his cock slid in and out of Izuku’s hole with ease.
“Look at how your greedy hole is sucking me right in. God, it’s like your slutty ass was made for this.” he commented.
Izuku’s moans only grew louder and more needy as Katsuki continued to fuck him. He eventually changed the angle, hoisting Izuku’s leg up onto the desk and pinning his hips down as he drilled into him.
“Shit! Oh god, it’s so deep! Kacchan’s cock is so deep inside me...harder, Kacchan…” Izuku panted out.
“You want me to go harder? Hm?” Katsuki asked.
“Oh, fuck yes! Harder, deeper, go fucking harder, Kacchan! Fuck me nice and rough, Kacchan…!” Izuku moaned out.
Katsuki growled as he went even faster, the slapping of skin and other obscene sounds filling the study. The desk shifted and creaked a little, but that didn’t deter the blond. He did as Izuku wished, thrusting in and out of him and drawing more melodic moans from his lips.
“Oh my fucking god, yes! Yes, yes, just like that, fuck! ” Izuku screamed, moving his hips in an attempt to meet Katsuki’s thrusts.
“God fucking dammit, Deku, do you know how sexy you are when you curse? Fuck, it’s such a turn-on.” Katsuki panted out.
Izuku moaned in response as he felt Katsuki lean over his sweaty body and nip his neck. The blond continued peppering his skin with kisses and rough bites as Izuku pressed his forehead against the desk. His mind grew foggy as he sank deeper into pleasure.
“O-Oh, Kacchan...yes, keep going, keep going— fuck!” Izuku’s head snapped up, his eyes wide and a very slutty moan falling from his lips upon feeling Katsuki nail his prostate.
“Looks like I found it.” Katsuki panted out with a wolfish grin.
He continued ramming into Izuku’s ass, drawing cry after cry from him. With each thrust delivered to his sweet spot, stars danced in his vision and mindless babbling mixed with moans and sobs tumbled from his lips. Tears sprung to his eyes from the intense stimulation.
“Yes, yes, keep hitting right there, Kacchan! Oh, it feels so good…!” he panted out.
“Yeah? You like it when I hit your prostate like that?” Katsuki’s breath ghosted over Izuku’s ear. “Mmm, you hear how slutty you’re sounding? You’re such a slut for my cock, Deku.” he purred.
Izuku choked on a sob, tears freely streaming down his cheeks as his body tingled. Katsuki dragged his tongue along the curve of his ear before pulling away. Then, Izuku found himself being flipped so that he was laying on the desk.
“Wrap your legs around me.” Katsuki commanded.
Izuku did as Katsuki instructed, pulling the blond closer as he resumed pounding into his wet, greedy hole. Screams and lewd moans bounced off the walls as Izuku lost himself in the throes of pleasure and lust. The greenette was loud enough that the neighbors could hear him, but he didn’t care. He was getting split open on Katsuki’s cock and he wasn’t going to let anyone or anything stop him from letting the blond who he’s thirsted over and crushed on for so long fuck him into oblivion.
His hands slid up Katsuki’s chest and sought purchase on his broad shoulders, his nails creating crescent-shaped marks on them in an attempt to keep himself grounded. He feared that if he let go, he was going to drift off to cloud nine and never come back.
“Isn’t this so much better than fucking yourself on a dildo and thinking that it’s me? You got the real thing right here, pounding into you until you’re a drooling, overstimulated mess.” Katsuki growled.
The low, sultry tone of Katsuki’s voice made Izuku whine and moan, his body writhing underneath him.
“Tell me, Deku.” Katsuki’s fingers twined themselves in green curls and he yanked hard, eliciting a yelp from Izuku. “Tell me how it feels to be fucked by the real thing. Tell me what it’s like to be split open by my cock.” he demanded.
Izuku panted harshly, the sting in his scalp making his cock twitch against his stomach as he tried his best to formulate a proper sentence.
“Feels...feels so good! Kacchan feels so fucking amazing, oh my fucking god…!” Izuku cried out.
“Of course I’m much better than a dildo. And you better get that ingrained in your head, nerd. Or would calling you a slutty fanboy be more appropriate?” Katsuki asked.
Izuku couldn’t tell if it was the words “slutty fanboy” or how Katsuki reached in between them to start stroking his hardened, leaking cock that made him sob in pleasure, but he was too far gone to care. More tears spilled down his reddened cheeks as he moaned again, body jerking from the way Katsuki twisted his wrist around the swollen head.
“What’s that? You like being called a slutty fanboy? Figures, considering how much of a fanboy you are and how much of a thirsty slut you are for me.” he delivered a particularly swift thrust to Izuku’s prostate, making the greenette wail. “Your fanboy tendencies have gotten a bit…extreme, Deku.” he commented.
“It…! It’s only you, Kacchan…” Izuku choked out.
“Huh? What do you mean, it’s only me?” Katsuki asked.
“You…” Izuku moved a hand up to cup Katsuki’s cheek. “You’re the only one I’d push my tendencies to the extreme for...not any of the other pro heroes, just you…” Izuku panted out.
“And why’s that?”
“Because…!”
Another wave of pleasure rippled through the greenette’s body as he edged closer towards his orgasm. Izuku moaned loudly, teary emerald eyes locking on half-lidded crimson ones as he spoke.
“I like you, Kacchan! Because I like you...I can’t help but fanboy excessively over you. My feelings have gotten to the point of nearly spilling over and I just...pour those into my fics and let myself be satisfied with—ah!—that. You’re the only one I lust for, the only one I fanboy to this extent over, and the only one for me.” Izuku said.
Katsuki’s eyes widened at Izuku’s words. A different emotion flickered in his crimson eyes besides desire and Izuku found it difficult to pinpoint what said emotion was. The blond bit his lip before cursing under his breath.
“Fuck…!”
Next thing Izuku knew, Katsuki dove in to mash their lips together. Izuku moaned needily into the kiss, his hands weaving through blond spikes and gripping them tightly. Their mouths moved together in a sloppy yet synchronized dance as their tongues and teeth clashed with one another. Izuku broke away as he moaned, teetering on the edge of his climax.
“Shit! Ka-Kacchan, I’m gonna...cum…!” he cried out.
“Yeah? You gonna cum? Cum for me, Deku, come on.” Katsuki said.
He stroked Izuku in time with his thrusts, determined to bring Izuku over the edge. Staring down at the greenette below him, he took in the flushed cheeks stained with tears, his bruised lips, the green curls matted to his sweaty forehead, and those emerald green eyes that shone with tears and what Katsuki could only describe as unabashed affection and love. The sight made his heart hammer in his chest as he brought a hand up to push his curls back.
“Fuck, you look so beautiful. So fucking beautiful, Deku.” he stroked the rise of Izuku’s cheekbone with his thumb as he leaned in a little. “I’m gonna make you cum so hard for me, Deku. Then, I’m gonna fill you up so much until my cum’s oozing out of that slutty hole of yours. I’m gonna make you mine.” he snarled.
With that, Izuku came the hardest he ever did in his life. His body lifted off the desk in a beautiful arch, his mind going blank and his vision turning white as his orgasm slammed into him like a raging tidal wave. Hot, sticky streams of cum spurted all over their stomachs and Katsuki’s hand as his body jerked violently from the mind blowing orgasm.
The greenette could tell that his voice was going to be hoarse in the morning from the loud scream that was torn from his lips, but he was too blissed out and high off of euphoria to care. He barely registered Katsuki following soon after with a string of expletives falling from his tongue and a few snaps of his hips, filling him up with his cum like he said he would. Izuku groaned softly at the feeling of being filled as he slowly came down from his high.
His eyelids fluttered as viridian eyes peered up at Katsuki, whose cheeks were stained red. He panted harshly above him, trying to catch his breath after orgasming. A small smile touched his lips as his hand cupped the blond’s cheek.
“Kacchan…” he spoke in barely a whisper.
He managed to stroke under his eye once before his hand fell to his side and his eyes slid shut, his mind slipping out of consciousness as everything went black.
Izuku stared out the window through the parted curtains in his bedroom, curled up under the sheets with a strong arm wrapped around his torso.
When he came to, the greenette found himself lying in the bathtub with Katsuki softly massaging his scalp while he worked shampoo into his curls. Katsuki chided him for dipping out of consciousness before he could perform aftercare on him, but after Izuku’s quiet apology, they fell into a somewhat comfortable silence, considering what transpired between them not too long ago. He could only hum in content as Katsuki washed him off and got him dressed in an oversized black shirt and Ground Zero themed briefs (Izuku’s cheeks flushed pink once he saw them) before taking a quick shower himself. Then, after throwing on a pair of grey sweatpants and one of Izuku’s shirts, the two of them retreated to the greenette’s bedroom for the night.
As Katsuki pulled him closer, realization hit him like a truck barreling down a hill at full speed.
Kacchan and I had sex!
He blushed furiously as he recounted the events that occurred earlier on that evening.
Oh my god, Kacchan and I actually had really wild sex together. And it was because he found my ZeKu fanfiction! Gosh, I knew I should’ve just gone back and closed my laptop so that he wouldn’t have seen it, but maybe it’s a good thing I left it open? I mean, I had the best sex of my life because of it. But...now he knows my dirtiest secret. How are things going to be between us now that he knows I’ve been writing smut about the two of us?! And even worse, I confessed my feelings to him while I was getting railed by him...shit, shit, shit, I probably ruined things between us and Kacchan’s going to think that having sex with me was a mistake and then he’ll—
“Hey, pipe down a bit, nerd. You’re muttering a mile a minute again.”
Izuku nearly jumped six feet in the air upon hearing Katsuki’s low, husky voice so close to his ear. He tensed as the blond nestled his head into the crook of his neck.
“Fuck, relax a bit, Deku. What’s got you so worked up? Although I have a vague idea as to what it is based on your mumbling just now.” Katsuki said.
Izuku bit his lip as he lowered his gaze to the sheets, tracing each crinkle in them.
“W-Well...it’s just...we had sex. In my study.” he said.
He swallowed, hoping that it would push the lump that had formed in his throat down. But to no avail, it stayed firmly wedged there. Goosebumps began to spread all over his body as Katsuki let out a breathy chuckle.
“No shit, we had sex in your study. What, are you regretting it now?” Katsuki asked.
“N-No! No, I wouldn’t regret doing it with you, Kacchan…” Izuku licked his lips. “Do you regret it, Kacchan?” he asked.
Katsuki snorted.
“Of course I didn’t fucking regret it. Actually, it was the best decision I made. Having sex with you, that is.” he replied.
“It was?”
“Yeah.”
“Oh…”
Izuku fell silent, pondering over the blond’s words. He tried to figure out what Katsuki meant by saying that having sex with him was the best decision he made, but he kept drawing blanks.
It wasn’t like Katsuki felt the same way about him, did he?
He immediately dismissed that thought as Katsuki spoke.
“Deku...did you mean what you said earlier?” he asked.
“Hm? What I said earlier?” Izuku questioned.
The blond didn’t respond. Then, warm hands were placed on Izuku’s arms and he was being turned to face him. Izuku stared at Katsuki, whose crimson eyes were peering down at him.
“You said that you like me. Do you mean it? Do you really like me?” Katsuki asked.
Izuku blushed as he recalled the words he said to him. He opened his mouth only to close it, repeating the action over and over again as he tried to formulate a proper response to his question.
Katsuki released a soft sigh as he pulled Izuku closer, resting the greenette’s head against his chest. Fingers threaded through his curls as he spoke in such a soft voice that Izuku almost didn’t hear him. But, despite the soft tone, he heard him loud and clear.
“I hope you did. I like you too, Deku.”
At this point, Izuku’s face was on fire. He swore that if he looked at himself in the mirror right now, he’d resemble a beet. His heart raced erratically, threatening to burst out of his chest at any moment. He slowly swallowed as he replayed Katsuki’s words in his mind once more.
“I like you too, Deku.”
Could it really be possible?
He gingerly lifted his head to look at Katsuki and immediately recognized the expression on his face. It was the look he wore when he decided to let his walls down for just a moment, his ruby red eyes revealing so much raw emotion and vulnerability that Izuku couldn’t deny the fact that Katsuki was telling the truth. It made Izuku’s heart soar.
It’s true. Kacchan really does like me back.
A giddy sensation bubbled up in his stomach as a soft smile crossed his lips. He brought a hand up to stroke Katsuki’s cheek, the blond stiffening a little at the touch before leaning into it.
“I did mean it. I do like you, Kacchan.” he shook his head. “Actually, “like” doesn’t even cover it. I’m absolutely head over heels, totally in love with you.” he said.
Katsuki didn’t respond. A myriad of emotions flickered in those ruby orbs that Izuku loved staring into so much before they settled on something akin to happiness.
“Thank fuck. I thought for certain that you might’ve said it because it was one of those “in the moment” type situations.” he said.
Izuku shook his head.
“I don’t say things I don’t mean, Kacchan.” he stated.
This made Katsuki chuckle.
“Hey, that’s my line, silly nerd.” he commented.
Izuku let out a small squeal that came out a little nasally as Katsuki pinched his nose and tugged on it lightly. He quickly buried his face back in Katsuki’s chest, feeling the blond’s body vibrate from the deep chuckle he let out. He inhaled the familiar scent of spices along with the subtle sweetness of burnt sugar and the honeyed sweet mint of eucalyptus from his shampoo as Katsuki resumed threading his fingers through his curls.
“Since when have you had feelings for me?” Katsuki asked.
“Gosh, I don’t even remember when. I just...always liked you, Kacchan. With every little thing you did, I kept falling more and more in love with you.” Izuku glanced up at Katsuki once more. “And you, Kacchan? When did you start liking me?” he asked.
“Probably during third year. I was starting to accept my sexuality after doing some exploration and I kept feeling this tug of attraction towards you. I think it was when we were sparring together one night that it hit me. Your face was so close to mine and the moonlight coming in through the window lit up your face so beautifully that it took my breath away.” Katsuki explained.
“Oh, I remember that night! You started leaning in as if you were about to kiss me and then you suddenly pulled away and ran off. I remembered thinking to myself that I wish you did kiss me instead of leaving me like that...” Izuku murmured.
He didn’t miss the way Katsuki blushed as he averted his gaze.
“That...That’s because I was going to kiss you, dumb nerd.” he stared past Izuku’s head as he continued. “But I stopped myself before I could. I didn’t want things to get weird between us and it just felt like you didn’t feel the same, so I kept my feelings bottled up and hoped you didn’t find out.”
“Oh...so, you were like me, then. I kept everything bottled up, as well.”
“That why you started writing fanfiction about us, nerd?”
Izuku’s cheeks flushed pink as he bit his lip.
“Well...I guess you can put it that way?” he answered after a moment of hesitation.
“When did you start doing that, anyway?” Katsuki asked.
“Oh...it was three years ago. I started thinking to myself that if my feelings for you were unrequited, then I’d let them out in a different way. Then I started writing out a dirty fantasy about us and before I knew it, I was making an account on AO3 and posting it on there. It got a very positive response, so I just kept going. Who would’ve thought that it would all lead to you reading the smut I wrote and us having sex because of it...” he trailed off with a laugh.
“Yeah, who knew…” Katsuki moved his hand to stroke Izuku’s cheek. “You don’t need to worry anymore about your love being unrequited because it isn’t. It is very much requited.” he told him.
“I know. And it makes me so happy.” Izuku said as Katsuki closed the distance between them.
Compared to the other kisses they shared earlier, this one was more soft and tender. Katsuki cupped his other cheek while Izuku wrapped his arms around the blond’s torso, their legs tangling together under the sheets. The way Katsuki touched and kissed him was so gentle that it made Izuku want to cry.
When they finally pulled away, it took a moment for Izuku’s eyes to open. He savored the moment for a moment more before opening his eyes to look at Katsuki, whose eyes were also fluttering open. He smiled as Katsuki’s arms found themselves around his waist once more.
“So, Deku. Is there anything else you’re hiding from me besides your AO3 account? And don’t you dare lie to me, I can tell when you do.” Katsuki said.
“Uh, well…” Izuku fidgeted a little in the blond’s arms. “I also have a secret Twitter account…” he trailed off.
“Seriously?” Katsuki questioned.
“Yeah...it’s a GZ stan account. I tweet about all things relating to you along with fanart of us and also my posts about the fics I’ve posted on AO3. I even...write thirst tweets about you.” Izuku admitted.
“I...oh my god, you really are a fanboy through and through.” Katsuki pressed a kiss to Izuku’s forehead. “As much as I’d like to look at some of those tweets, I think it’s time for us to go to bed.” he said.
“What time is it?” Izuku asked.
“Two fifteen, according to your alarm clock.”
“Wow, that’s late.”
“It is, which is why I’m suggesting that we go to bed.”
Katsuki pecked Izuku on the lips.
“Sleep, Deku.” he said.
Izuku nuzzled his face against Katsuki’s chest as the blond pulled him closer.
“Mmmm. Night, Kacchan.” he said.
“Night, nerd.” Katsuki replied.
Izuku hummed as he closed his eyes. Katsuki rested his chin atop his head as Izuku spoke in a soft whisper.
“Hey, Kacchan?”
“What now, nerd?”
“Are we dating now?”
“Of fucking course we are. We confessed our feelings to each other and even had sex in your study. How could we not be dating after all that?”
“Heh, you’re right.”
Izuku cuddled against him, listening to the sound of Katsuki’s heartbeat as a smile danced across his lips.
As much as he wanted to convince himself that he was dreaming all of this, the blond’s arms wrapped around him were very real and cemented the whole situation into reality for him. After all this time fanboying over Katsuki and crushing on him, he finally had him as his boyfriend (and also had really amazing sex thanks to him leaving his laptop unattended for Katsuki to see everything).
It certainly was Izuku’s (and a fanboy’s) dream come true.