Chapter Text
It was late afternoon when Katsuki finally finished his patrol, and he was grateful to retire to his room and be done with everything for the day. It’s not that it was a particularly bad shift, but he was still tired.
He had to interact with Izuku, which isn’t uncommon, after all they worked together more often than not, but lately things between them had been…weird. Lately, whenever Izuku did pretty much anything Katsuki could feel himself getting irrationally angry.
Just like today.
He had been going to his normal patrol spots with Izuku when they came across a low level villain by the name of “Enamor”. Apparently, the chick had been going around hitting people with her quirk, and nobody knew exactly what it was yet. It was an easy battle, but right in the middle of it Izuku had made a move that Katsuki didn’t anticipate and, like the asshole he is, he got too caught up in cussing Izuku out. Right as Izuku was getting the villain into quirk canceling handcuffs, Katsuki distracted him and Izuku ended up getting hit by her quirk.
He started glowing bright pink, and he grunted as he finished getting the cuffs on her. They handed her over to the police and were promised to be notified as soon as they finished interrogating her. Izuku was sent home early, leaving Katsuki alone to finish the patrol.
Now, Katsuki makes himself some food as he curses himself for being a dumbass and–
BAM
He jumps. What the hell was that?
Cautiously, because he’s not an idiot, he approaches the door. Right as he is about to walk away he hears Izuku’s voice, sounding pained and eager at the same time.
“Kacchan?”
Immediately Katsuki throws the door open, taking in the sight of Izuku leaning on the wall in the hall of his apartment building.
And that's how they ended up here.
“Izuku, what the fuck are you doing here?” Katsuki grumbles, annoyed but mostly concerned. Izuku doesn’t usually come to his place without sending him a heads up.
Izuku glances at him, looking oddly sheepish, with a weird hint of red dusting his cheeks. Luckily the abnormal pink glow from earlier seems to be gone.
“I uh…. I just. really. wanted to see you.”
Katsuki just looks at him. What is he supposed to say to that? It’s weird, sure, but that tends to be a given with Izuku. He can feel his anger at just looking at him rising, and takes a deep breath. God, why is he such an asshole?
Wordlessly, Katsuki walks back into his apartment, leaving the door open, and Izuku takes the hint. He follows him into the kitchen as the blond leans back against the counter.
“Did something happen?” Katsuki grunts and rolls his eyes. “You’re not dying, are you?”
Despite saying it like a joke, knowing Izuku and what happened earlier the possibility is always there.
Izuku squeaks. “No! No, everything’s alright, really Kacchan. I think it might have something to do with the quirk from earlier. You remember, right?” He says it like he’s actually worried Katsuki would forget.
He scoffs. “Of course I remember! Idiot. Just tell me what it is.”
Somehow, the nerd’s face burns an even brighter red than before, which is weird. Izuku’s eyes squeeze shut and his lips pull into a thin line as he quickly shakes his head.
“Hah? You won’t tell me? The fuck’s that about? Tell me.”
Izuku opens his eyes just to glare at him and shake his head again. Fucker.
“Oi! You can’t just show up at my fuckin’ front door and then act all mysterious about it!” Katsuki can feel his frustrations increasing, and he’s just short of yelling at this point. He walks into the nerd’s space and pokes Izuku in the sternum.
“Either you can talk or you can get out of my apartment. I’m tired damnit.” And he means it.
At that, Izuku looks slightly panicked, like the thought of leaving actually pains him.
“No, wait!” He fumbles with his words. “It’s just.. embarrassing.”
Katsuki rolls his eyes. “Couldn’t be more embarrassing than whatever the fuck you’re doing now.”
Izuku hesitates.
“The quirk… it was a love quirk. It makes people fall…almost deliriously in love with the first person they see.”
Katsuki doesn’t see his point.
“Hah? What does that have to do with me?” He glares harshly.
Izuku’s eyes are looking up at him now, that brilliant green so carefully focused solely on Katsuki. He swallows. “Kacchan… I think you’re the person I saw first.”
Oh.
For a second Katsuki just stares back, everything sort of catching up with him. Does that mean the nerd is in love with him right now? Just the thought of it leaves a weird burning in his chest, he’s never even considered that a possibility before. It’s bittersweet, and the longer he stares at Izuku’s insanely fuckin’ green eyes the hotter he can feel the frustration bubbling inside him.
“Ever since I was hit by the quirk I’ve been feeling weird. And then I found out what it was and Kacchan!” He whines, “I just couldn’t stop myself! And apparently the quirk is supposed to get stronger as time goes on!”
What.
“Oi!” He yells, cutting off Izuku’s rambling and muttered apologies. Katsuki takes a moment to breathe and collect his thoughts. “How long is it supposed to last.”
Izuku blinks. “...Uhhh I believe they said just 48 hours. I was feeling sorta out of it.”
This guy is freaking out about a quirk that only lasts 2 days? He scoffs. “So it’s no big deal, right? It’ll end soon enough and we can forget all about it.”
Izuku looks at him hesitantly, a mixture of relief and unnerving awe in his gaze. It makes Katsuki’s breath catch in his throat. God, was Izuku always so intense?
“Oh.. right, Kacchan.” He smiles and seems to shrink in on himself. Then his face falls. “Wait. Did you hear the part where it’s supposed to get stronger?” Izuku asks.
It’s not ideal, right now Katsuki wouldn’t even guess there was anything different with Izuku, besides the constant flush of his cheeks and the strange looks he keeps sending him. But Katsuki can handle it.
“Tch. It’s whatever, nerd. Just don’t get too eager to suck my dick.” He teases with a smirk.
Izuku blushes. “No promises.”
Even Katsuki turns a bit pink at that, suddenly struck with images that he definitely didn’t want to think too hard on. (heh…hard on)
Izuku seems to notice his hesitation because he's very suddenly apologizing, giving Katsuki whiplash. The difference in Izuku’s behavior caught him off guard… normally that would have turned him into a stuttering mess. He doesn’t know if he can do this.
“.....Whatever.” He huffs.
This is fine. Totally.
There was still barely time left in the day, so they ended up watching a movie in the living room. It was an All Might classic from their childhood, and it was so bad that they both ended up picking the whole thing apart (because they’re equally insufferable when it comes to movies).
Overall, Katsuki was doing… fine. He just had to pretend he couldn’t see the way Izuku’s eyes kept choosing him over the movie, the way he’d lick his lips and then snap out of whatever trance he seemed caught in. Not to mention, he’d gotten a lot closer to Katsuki as time progressed, starting out on opposite ends of the couch and now touching thighs. It was distracting as hell, and he didn’t know how to feel about it.
As of now, the end credits to the movie were rolling, and Katsuki turned toward Izuku to talk more about the movie, just like always.
Except when he turns his head he finds himself practically nose to nose with the nerd.
They both flinch, but neither actually moves out of the way. Katsuki’s breath catches in his throat as Izuku goes slightly cross-eyed just to maintain eye contact. They stay like that for a moment, before Katsuki remembers the quirk.
“We should probably head to bed.” He pulls away and leans on the arm of the couch. “Y’ staying the night?”
Izuku thinks about it for a minute, probably contemplating the idea of leaving Katsuki’s side to sleep in his own bed. His eyebrows furrow, like he definitely doesn’t like the idea.
“Can I?” He asks. “I mean, if it’s alright.”
Katsuki snorts. “Sure, but you’re sleeping on the couch.”
Izuku whines. “But your bed is so comfy!” His lip juts out in a dramatic pout and Katsuki just rolls his eyes.
“Please. As if I need some clingy quirked-up nerd hanging off me all night. You’re already insufferable without the whole lovey-dovey bullshit, I can’t imagine what you’ll be like now.”
Nevermind the fact that Katsuki is definitely doing this because he’s worried about his own feelings toward the guy.
Izuku’s face burns bright red as he glares at him. “Probably not very different…” He mutters under his breath.
“Hah?! Speak up nerd.”
“Nothing!”
Katsuki glares at him before getting up to get a toothbrush for the nerd. He comes back to find Izuku scrolling on his phone.
“Oi. Take your shit, I’m going to bed.”
Izuku gratefully takes the items before frowning lightly. “Bed? Without me?” That seems to take even him off guard because his face darkens 5 shades.
The blond sputters. "This quirk is making you weird." And with that, he retreats to his room so that he can never speak to anyone ever again.
It’s been a long ass day.