Chapter Text
5.
Katsuki looks through one of Deku’s magazines about Heroes with mild interest, it’s been some time since they had a lazy evening like that and he’s not sure what to do with himself. From time to time he glances at Izuku, who writes in his notebook like there’s no fucking tomorrow, mumbling to himself as usual. It used to piss Katsuki off to no end, it still does sometimes, but most of the time now, he is, for the lack of a better word, quite fond of it.
He comes back to reading an article about Heroes exercising routines when Deku sneezes, it’s completely out of the blue and he looks back at him. Izuku is scribbling something furiously, mumbling even more and then he sneezes again.
Sure, it’s fucking cold outside, the winter in full force, but inside their apartment? It’s goddamn hot, but then Izuku shivers slightly and Katsuki stands up frowning. He goes and checks the thermostat, but it confirms what Katsuki already thought, it’s warm.
He decides not to dwell on it too much and just goes to the kitchen. He rummages through the cupboards and once he has everything he needs, he starts making hot cocoa.
“Stupid nerd, not taking care of himself.” He growls frustrated.
Another sneeze and something unpleasant coil in Katsuki’s stomach, he wonders when he started worrying so fucking much about the nerd, about every little thing that had to do with him.
He glances at Izuku, but the nerd is still scribbling, face scarily focused and he shakes his head at that, not even the scent of chocolate can bring him out of his single-minded focus. With a shake of his head, he adds some cinnamon and as an afterthought also a pinch of chili. Nothing better to warm you up than a spicy drink, he still mixes honey in since Deku liked his cocoa sweet as fuck, the goddamn sweet tooth.
He grabs Deku’s All Might mug and makes his way to the nerd. Deku doesn’t react at all, still mumbling something about Villains and Quirks and contingency plans, he doesn’t notice when Katsuki puts the mug on the table in front of him, after a second he slides it back slightly.
“Oi, ‘Zuku.”
Nothing.
“Deku.”
Izuku shivers and sneezes again but still doesn’t acknowledges Katsuki and it pisses him off.
“Oi, Izuku.” He whispers into his ear and that’s when Katsuki finally gets some fucking reaction out of his boyfriend’s sorry ass.
Izuku startles badly almost tipping the mug off the table, good thing Katsuki put it out of his range. “Huh? Kacchan!”
“Who else, Deku?”
Deku blushes, “right, sorry. I just got—“
“I know, you’re always like that when you write in your nerdy notebooks.” Katsuki clicks his tongue, he reaches and squeezes Deku’s cheeks turning his face his way, he notices that Izuku is slightly paler than usual and his eyes start to look somewhat glassy. “You look like shit.”
Izuku snorts, “tche, thanks Kacchan. Always such a romantic.”
“I could kill you with romance, idiot.” Izuku puffs out his cheeks, something he always does when Katsuki calls him names, not that there’s any insult in them, it’s just how Katsuki rolls. He doesn’t call other people idiots in a fond tone after all. “I made you some hot cocoa to warm your ass so you better drink it to the last drop, got it ‘Zuku?”
"Oh?" Izuku looks at the mug and then at him, “thank you Kacchan.” He smiles, “I actually feel a little bit cold, how did you know?”
“You were shivering and sneezing like crazy it was annoying.”
“Oh.”
Katsuki rolls his eyes and ruffles Izuku’s hair, seriously how he is so oblivious to his own well being it’s beyond Katsuki. Fucking nerd. “Yes, oh.” He sits behind Izuku and pulls him into his lap, then unceremoniously he props up his chin on top of Deku’s head.
“Kacchan!”
“Shut up and drink it,” he nods at the mug in Izuku’s hands.
Deku bites his lower lip, but nods. Katsuki can see his grinning face from the corner of the eye and can’t help hugging him a little more.
Katsuki wonders when he became such a fucking besotted fool.
6.
It’s been a long day and Izuku doesn’t want anything more than to take a bath, eat Kacchan’s delicious food and snuggle up on the sofa with his boyfriend to watch some TV. Of course, life is never easy and rarely goes as planned, so when he hears loud voices he stops right in front of their apartment door, key in hand and debating whatever he should just turn on his heel and wait it out but decides against it, he's a hero, after all, they don't run.
With renewed energy he unlocks the door and steps inside, he quickly changes his sneakers into his favorite All Might's slippers and goes into the living room.
The profanities fly left and right and he watches in amusement as Kacchan and his mom engage in a shouting match. He smiles, Katsuki took after his mother in every aspect and it’s as fun as it is tiring seeing them clash all the time.
“You goddamn, brat! Why don’t you ever visit us?! You ungrateful little –“
“Shut up, you old Hag! I don’t have fucking time!”
Auntie glares and Kacchan gives as good as he gets and quite honestly it gets ridiculous, it always does.
“Kacchan, I’m home.” Izuku says and walks up to them, he pecks Kacchan on the cheek before he turns to aunt Mitsuki, “hello, auntie.”
Auntie grins and ruffles his hair, it feels kind of nice, “Hi, Izuku. God, you're such a polite kid. Too good for this stubborn brat of mine."
Katsuki glares at his mother, “what did you say old Hag?!”
There they go again, Izuku thinks resigned, better nip it in the bud before things escalate.
“Kacchan! That’s not the way to talk to your mother.”
“Haaa?! The old Hag is an old Hag.”
Izuku tries his best ‘disappointed in you’ look, it’s a wonder really that Katsuki is so rude to his parents but he can be so polite to Izuku’s own mom almost kind of sweet really, in Kacchan’s weird way that is.
Katsuki frowns, grits his teeth, and finally deflates, "whatever. I'll call you and dad the next time we have a day off. We can have dinner or some shit." He pulls Izuku closer, squeezing his hip, “you should invite your mom, too.”
Izuku beams, he can’t help himself, “of course!”
Auntie gasps and he remembers she's still there, he glances at her. She's covering her mouth with her hand, eyes wide, and looking at her son like she saw him for the first time then she looks at Izuku.
“Izuku, sweetheart. Please stay with my stubborn brat of a son. He’s almost tolerable when you’re around.”
Katsuki twitches by his side, “you want a fight?!”
Mitsuki laughs, “ah good thing I have such a nice son in law at least.” She ruffles Izuku’s hair again. This time though, he doesn’t even register it. He just stands there, blinking rapidly completely frozen. Katsuki is no better.
And then all Hell breaks loose.
“The fuck is wrong with you Hag?! He’s not your son in law yet! Stop spewing shit without thinking!”
It’s nothing really, the words but it makes Izuku’s heart stop for a second, the ‘yet’ echoing in his head. He makes a few steps back, suddenly very dizzy and warm. It shouldn’t affect him so much, auntie liked to tease them like that from time to time but Kacchan never… it sounded… he shakes his head, reading too much into it like always.
The shouting stops and when he looks up, Katsuki is in his space, eyes unreadable, “Oi, nerd. The fuck you’re doing?”
“You said ‘yet’.” Te words are out before he can stop them.
“So fucking what?” Katsuki frowns not comprehending what Izuku means, to be honest, he's not sure what he means either. They stare at each other for a few moments or it could be all eternity, who knows? Then it dawns on Kacchan what he said and when it does he flushes a deep violent red, Izuku’s no better, he feels hot all over.
‘Yet’, what does he means by that?
Mitsuki laughs already on her way back to the exit, “I better leave you two lovebirds alone, then. Katsuki you better call. I want that dinner and if you plan on making an honest man out of Izuku then you should do it right, you useless son of mine.” She winks and just like that she’s gone before the two of them can react in any way.
“Whaa—aa—what?!” Izuku shrieks, brain going into overdrive.
Katsuki just stands there, mouth open and hands twitching. Izuku’s not sure how long they stayed like that, one thing is sure enough, the family dinner is going to be awkward.
Even though he can’t stop thinking about the possibility once it slapped him in the face. And he’s sure that if Kacchan ever proposed to him his answer would be most definitely, without a doubt – yes.
7.
Katsuki glares at the lump of covers on the bed, Deku’s foot sticks out and it somehow irritates him even more, they finally have a day off and what Deku does? He sleeps in, like a fucking baby. Katsuki glances at the clock and his eye twitches, he already was up for like three hours, already did his morning run, showered and went out to get the groceries for breakfast since their fridge was empty as fuck.
Izuku mumbles something in his sleep, something resembling ‘Kacchan’ followed by a giggle, he smiles like an idiot, drooling on the pillow he’s clutching like a goddamn live line and Katsuki has enough of it. He grips Deku’s ankle and yanks him all the way down the bed. Izuku startles, green sparks flying and dying out almost instantly once Izuku’s big fucking eyes land on him, and the recognition sets in.
“Kacchan!” Izuku cries and flat out hits Katsuki with the pillow he was still clutching.
Katsuki growls, “how long are you going to sleep dumbass?”
Izuku rolls his eyes – the nerve of him – and sends Katsuki very disappointed puppy eyes. "Kacchan we have the day off, there’s no need to get up so early.”
Izuku raises his brows pointedly and it makes Katsuki feel like a goddamn fool for making plans to spend together their day off.
And he’s no fool.
He lunges forward and Deku’s eyes widen but before he can do anything, Katsuki sneaks his hands under Izuku’s back and hugs him. "Fucking exactly, Nerd. We should spend the whole day doing something together instead of sleeping in a bed like some grumps. Idiot."
Izuku turns his head to look at him, “Kaccha—“
Now for the punishment, Katsuki bites his favorite spot on Deku’s neck right at the juncture with the shoulder, Izuku yelps, and sucks in a breath when Katsuki licks the spot.
Self-satisfied he leans back and looks at Deku. The nerd as always delivers, cheeks red as a tomato, and Katsuki grins. “Come on nerd, how long I have to wait for your lazy ass, hmm.”
Izuku looks to the side, flustered as all hell, “what it’s with you and biting, seriously Kacchan.”
“Haah, don’t play innocent, you fucking love it.”
Deku glances at him from under his lashes, lower lip between his teeth. He's just a nerd, but he looks fucking coy like that, and Katsuki wonders if they should go for a quickie before breakfast.
Izuku puffs out his cheeks, “you’re a beast. Absolutely savage.”
Katsuki laughs and finally stands up leaving Deku sprawled on their bed, they should eat some food first before doing anything else, besides there's not really much time left for what he planned already. "Come on, breakfast almost ready, so move that lazy ass and shower. We're going to the beach."
The reaction is instant, Deku jumps out of the bed, eyes sparkling like tiny fucking stars, “we’re going to the beach?! Why didn’t you wake me up sooner? Stupid Kacchan!”
“Haaa?! Who is stupid?!”
But Deku isn't even listening to him, already standing by the wardrobe and pulling out all the swim trunks he owns, most of them All Might's themed. "Which one I should wear? This one? Or this one? Oh my God, what should I do?"
Katsuki shakes his head and walks up to his hopeless boyfriend and takes out the Ground Zero swim trunks and hands them to Deku. “These ones nerd and go to the fucking shower.”
Izuku breaks into a grin, “Kacchan do you want to stake your claim or something?” He teases, tone light but still taking the piece of cloth from Katsuki’s hands.
Katsuki raises his brow, “what if I do? Got a problem with that?” He wants exactly that, he wants everyone to know Izuku is his since his boyfriend tends to attract some weirdos. He takes out Deku’s themed swim trunks and dangles them before Izuku’s eyes. “I’m going to wear these, so shut up and get ready.” Because as much as Deku is his, he belongs to the stupid nerd, too.
Deku stares at him with wide eyes, blushes, and nervously rubs his neck, "oh." He squeezes the swim trunks to his chest, eyes sparkling, "ok."
“If you understand, then go to the fucking bathroom.”
Izuku nods and finally vanishes into the bathroom, so that leaves Katsuki to finish making breakfast, his heart beating way too fast.
He’s going to romance the shit out of his nerd, it’s been some time since they had any kind of date not that Katsuki liked that kind of things, but from time to time he didn’t mind it, especially if it made Deku’s happy.
Not that he would ever admit all that mushy bullshit.