Chapter Text
Izuku has been behaving weirder than normal. He can't help it! It's been happening since he was a mere pup and age hasn't done anything but make him a messier disaster.
It's just that— he couldn't see it before, since Kacchan always made him leave his sight, but now he sees it, he sees how omegas cling to Katsuki without them even noticing, they cling to him for protection, for his attention, for a chance with the hottest alpha in their year and he's so fed up with it.
He understands, of course he does, maybe that's the problem, that he understands way too much, Kacchan is safe, he's warm, he’s smart, he’s powerful, he’s tidy and attentive and so nice... He’s everything anyone would want in a partner, at least in Izuku's eyes… So everyone just kinda rotates towards him.
It makes him so mad, because that's supposed to be his alpha! No one else's.
He's jealous. He's mature enough to recognize it and even admit it to himself. So to avoid feeling horrible for being jealous towards his friends he's been going straight to his room after classes, because he just can’t stand the way the omegas in their class are behaving, specially Kaminari and Kirishima, always touching Kacchan’s arms, so he simply leaves.
Crying in silence while biting his upset pillow to calm himself down and not snap to the kind friend that has gone to pick him up for dinner that day, such a joyful routine.
He scoffs getting into his room for the day and ready to bite his pillow while doing his homework when a hand doesn't allow him to close the door.
“Huh? Kacchan?” he noticed he shouldn't have said that as soon as the word left his mouth since knowing it's Kacchan just by his hand is way too weird.
“Stalker” clocked it.
“Shut up. Do you need something?” He internally curses, this just shows how he isn't ready at all to be Katsuki's partner. Too aggressive before being sweet like he is supposed to, he's too fake.
“Just wanna hang out” Izuku's eyes widen, Kacchan has to be lying, the other alpha has always told him his scent makes Kacchan uncomfortable, which is why they avoided playing inside whenever they had playdates.
“Liar” he whispers, opening the door anyway, he won't ever reject Kacchan when the blonde is the one to seek him. It almost makes him feel special, but most times he knows he's Katsuki's last option.
The blonde snorts, sitting on his bed, Izuku's inner alpha is trying to growl, detecting Kacchan's presence as an intruder. Izuku wants to beat his inner alpha up, but he remembers that it's not his fault and instead sits in front of his childhood friend as calmly as he can when he wants to cry because of how many sweet scents cling to Kacchan's spicy one.
“Did you do it?” Katsuki asks while leaning towards Izuku, who is too busy fighting his blush to actually pay attention.
“Huh?”
“Dumbass. If you made the blanket for my old man?”
“Ah? Ah! Yes! I have it right—” the greenette goes to look below his bed, moving things from one side to the other, finding the little blanket Kacchan told him to knead for his dad's birthday “here!”
Katsuki takes it in his hands with a soft smile, it's so rare that Izuku wants to take a picture and frame it, unfortunately he can only look at it.
“Soft, warm and beige. Just like he wants it”
“Everything for Uncle Masaru” Izuku says with a smile, happy to help Kacchan with his gift for his dad. He would like for Masaru to be his father-in-law, but he's satisfied with this, being a friend of the family has to be good enough.
“It’s kinda patchy though”
“It's the first time I knead!” Izuku pouts, he did offer to buy it instead but Kacchan insisted that it had to be handmade to be extra special.
“Speaking of first times” that unfortunately piques Izuku's interest. “Did you like the smoked honey roll?” Kacchan asks with a little bit of embarrassment. As if Katsuki's cooking was capable of being bad.
“I loved it! Tasted so good I ate it all in one sitting”
“You starving or something?” Katsuki asked with a teasing tone but a satisfied smile, making Izuku feel as if he did something good.
“Kacchan mean! I'm a growing teen!”
“Whateva” there's a comfortable silence between them that he wants to keep in a bottle and show off how this is his alpha.
Kacchan moves his hand to Izuku's one, starting to play with his fingers, the greenette smiles, playing too, the simple touches turn into a thumb war that Kacchan wins. Izuku rolls his eyes at Katsuki's proud noise, he always loves to win against other alpha's.
“I made you risotto this time” Katsuki stands up, looking at him with a soft smile. Izuku feels his heart speeding up, he really likes to be Kacchan's first option to taste his new food.
“Why are you testing so many western dishes?” he's curious though.
“Just wanted to try new things” Izuku nods before standing up, looking at the door, then back to Kacchan. The blonde gets what he's trying to say, getting up and walking in front of Izuku. “See? A starving bunny”
“Kacchan!” but Izuku giggles anyway. For a moment he can pretend as if this is a courting gift for Izuku himself instead of the test to deem the dish worthy or not of Kacchan's future omega. He still can't bring himself to ask who is the omega that has been tasting this delicious food for the last two months.
He knows he wouldn't be nice towards them and they don't deserve to be treated badly by a simple childhood friend.
While they're going down the stairs, with Kacchan in front, quite normal between them, Katsuki has been very vocal about never wanting to be behind Izuku, the greenette can notice how his friend has grown up in the months they've been studying in U.A., he's taller, broader and more patient.
Which makes Izuku think of his own growth spurt, he doesn't want it, he wants to stay this little, he could fake to be a tall omega this way, even though he knows it would be useless in the end. He sighs, poor unfortunate Izuku, never getting what he wants unless he breaks himself for it.
.
He is sketching Kaminari's new gear when he sees something coming to him way too close, he moves to the left, hiding behind Kacchan who has already raised his hand to catch the small ball that was going towards him.
“Eep!”
“You ridiculous green boy” Katsuki snorted, blowing the little ball up and catching it with the same hand, making fun of his friend.
“Shut up Kacchan! It looked so scary!” Izuku blushed, embarrassed from still relying on Kacchan for a lot of things.
“You ok?” the blonde asks anyway, with a teasing tone that makes Izuku's face get even redder, throwing the ball again.
“Yeah…” he pouts, pushing Kacchan who only chuckles and throws the ball once more.
“My apologies Midoriya! I calculated wrong” Yaoyoruzo screams at them, somehow with grace, Izuku waves her concern away.
“You're a little too old for this, don't you think? It was nice when we were two small brats, but now?”
Izuku pouts looking at him with a sad smile. The greenette is capable enough of defending himself, has shown it over and over again, but his first instinct is to get behind Kacchan, he used to tell him that once he presented as an alpha and Izuku as an omega it would be not only natural but logical.
Too bad Izuku didn't read the plan when he was born.
“Sorry Kacchan… It's a reflex” Izuku laments, sitting correctly and hiding his red face.
“I don't mind too much. You look kinda cute” Kacchan teases him with a smirk.
The greenette huffs with false humour while his heart is beating faster than normal. It should be an insult, an alpha calling another one cute is a clear sign of superiority, an insult that affirms their place in the hierarchy. But to Izuku? It's a compliment.
It means he could get Kacchan's attention for a bit longer.
“Oi” said Kacchan, pinching his nose, aggressively moving it from one side to the other.
“Ouch, ouch, ouch! Leave it, Kacchan mean!” Izuku complained with a nasal sound, thanks to the nose pinching.
“Don't ignore me then” Katsuki leaves his nose alone with a smile, it's so wide it makes him remember when they were younger.
“What am I even supposed to answer to that?” Izuku answers with a laugh, amused at the unusual attention seeking Kacchan that has taken his hands.
“I don't know. Kacchan's amazing? Thank you, Kacchan? You're handsome too, Kacchan?” the blonde moves his hands, moving Izuku’s body with him, making him giggle. He's really leaning on being childish today, huh.
The greenette rolls his eyes, pushing his friend. He gets pushed back and so they start to roll around on the floor as when they were little and were playing to heroes and villains, it sparkles enough memories in Izuku that he gets distracted enough for Katsuki to pin him down, looking intimidating and so hot Izuku has to try and take his thoughts back on track.
WIth Katsuki on top of him, his incredibly beautiful red eyes completely focused on Izuku, a sweet powerful smile on his lips and that prideful gaze, his thoughts just kept dissipating into one. Oh, he wants to kiss him so badly. Instead of doing that, he just gives up, relaxing his body below Katsuki, it seems to be the right answer when his friend laughs.
Kacchan is so handsome when he's laughing.
“Had enough, Deku?”
.
“C’mon! Help me” Kacchan pulls him by the waist to get him closer, Izuku has a stupid smile he can’t just wipe off, in these past three months Kacchan has been much more touchy, he's never had his hands on himself, at least not after their tests came and Kacchan decided to completely push useless Deku away, especially since Izuku couldn’t even be his omega.
“Kacchan! I’ve never done that… What if I poke your eye?” Katsuki rolls his eyes, pulling still until the greenette ends up between Katsuki’s legs, making Izuku blush. If only he was an actual omega he could try and flirt to see what they end up doing.
“I’d cuss you out” the blonde answers honestly, making Izuku laugh. It does sound like something Katsuki would do.
“Maybe you should ask Ashido?”
Kacchan sighs, taking Izuku’s waist once more before laying down on the bed, making the greenette sit on his lap. He can feel his cheeks gaining a blush, if Izuku wasn’t so sure Katsuki isn’t into alpha’s he would start to doubt their relationship.
“I want you to do it”
“Fineeee, but if it becomes messy you can’t complain!” he smiles while taking the little tube that Kacchan told him is the eyeliner, he’s seen Kacchan put it on when he’s preparing to put his hero suit on but he’s never actually touched it.
It looks like a marker, he’s used enough markers to try and make it look good, after all this is important to Katsuki and he has to do his best to satisfy him. He takes it and makes a small line, following his friend's natural eye shape. Izuku is getting a little nervous from those red eyes looking at him.
Moving Kacchan’s face to the left he continues to make thin lines, once he’s satisfied he moves the blondes face to the right and copy the same lines on the left, he really hopes he’s doing this the way he’s supposed to since redoing this will take them longer and they need to get to the Bakugou’s anniversary family dinner.
“I… finished!” the greenette smiles widely, proud of the simple design he gave Katsuki.
“You sure?” his hands caress his thighs softly, making Izuku realize they were there the whole time while he was applying the make up, he feels his body getting hot, it probably was just so Kacchan could push him away in case of getting too close to his eyes, and yet he can’t help but feel excited.
“Maybe… there’s still a little line I have to re-do?”
“Use the cotton swab to remove what you messed up” Izuku takes one, not actually paying attention, the eyeliner doesn’t need anything else, but he wants to keep feeling those hands on his thighs and the warm body below his.
They spend another three minutes like that, with Izuku faking correcting his errors and Katsuki pretending he doesn't notice there's no more strokes being done or cottons removing paint.
.
He’s not too short, he’s average, the problem it’s all the Bakugou’s are way too tall, even Masaru, the omega of the family, which is why he’s standing back, watching the cups he’s supposed to take back to the table with resentment. How is he supposed to get them when they’re literally in the highest place?
He sighs and thinks about simply asking for help but that tips him wrong, he knows the thought of the Bakugou’s being disappointed in him for not being able to retrieve some cups don’t even matter since he can’t become part of their family, at least not in the way he wants to, but it still stings.
He is about to give up and get a chair so they can finally have their post dinner tea when the door to the kitchen is opened by a hot-looking Kacchan, he has a knowing smirk but no chair in sight.
“Did you seriously just come here to make fun of me?” Izuku pouts, not really angry at Katsuki, more like to himself. It’s like the universe keeps telling him he would never be good enough for Kacchan.
“I haven’t even talk”
“Kacchan mean” that doesn’t mean he won’t be complaining.
“Oh fuck you. I can leave and let you go all teary eyed to my parents saying you couldn’t fulfil a simple request” the way he phrased it made him actually tear up. He doesn’t wanna disappoint his mother-in-law Auntie.
Kacchan sighs before putting his hands around Izuku, right on his waist. He’s been doing that a lot, always touching his waist, his hips, even his thighs, but before he can even tell the blonde to stop what he’s doing, since it isn’t actually helping, his feet stop touching the ground.
Oh… oh my All Might! He's capable of holding Izuku up with his hands completely extended and that’s so hot, Kacchan’s raw strength is so impressive! He is just holding him as if he was so light! He’s so gonna think about this while touching himself tonight.
He collects the cups fast, even if Kacchan’s arms don’t even tremble a little, as soon as the last one has been collected Katsuki lowers him down slowly.
“Everything all right?” the blonde alphas asks the greenette alpha who is too busy smiling like an idiot to raise his gaze and watch Katsuki.
“Yes, Kacchan”
“Erase that dumb smile” Katsuki noticed right away, of course, he is even smirking too.
“I’m just so proud of how strong you are!”
Katsuki rolls his eyes, friendly pushing him with a hand, not enough to actually make him trip and hit the floor but enough to make Izuku giggle, he leaves as if he didn’t even help the greenette alpha.
Izuku fans himself with a hand while taking the cups in a hand, trying to forget how easily the man can pick him up even though Izuku is absolutely no lightweight.
.
It was an evacuation drill, his leg got stuck under some debris from saving Tsu and so Katsuki saw his friends trying to help him walk out of the classroom and decided that they were doing it wrong, so he picked him up on his shoulder, running out of the room with him.
Izuku has been thinking about it for so long, because he’s sure, almost solid sure, that Kacchan rubbed his ass while he was on top of his shoulder. But he could have also been making sure Izuku wouldn't fall.
So now he’s in front of the mirror, looking at his hips, at his ass and thighs. They have gotten bigger, exercising for becoming a hero has done incredible things to his body, even if in his eyes he is going farther away from his delusion of maybe getting his secondary gender test wrong and he’s actually an omega.
But now that he’s seen his lower body… Maybe he is a late bloomer? As in really late. Because he does have enough fat in there to maybe be considered a defective omega, maybe that’s why Kacchan rubbed him? To make sure it’s fat and not muscle?
No. Why would Kacchan even do that?
Izuku sighs.
“Maybe in another life…”
.
The weather said it’d be sunny, but the sky has been cloudy since he woke up, he tried to be positive and decided to use some fresh clothes and he regrets it. It’s only the third hour and closing the windows to stop the air from getting inside the classroom hasn’t done anything, the place is way too cold.
He just started to sneeze when a warm, sweet scented jacket got on his shoulders. Kacchan’s sweet chili scent starts to embrace him, Izuku smiles before chasing Katsuki’s eyes, he gives him a shy tilt of the head, which makes Kacchan roll his eyes while going to his seat.
The rest of the day went like normal, interesting classes that make him write his notes as fast as he can, grateful for Kacchan’s help even though he probably did it to mark him as part of his possessions, he does that constantly, even when they were children. Izuku doesn’t mind since he’s always wanted to be Kacchan’s.
In his way to his room he stumbled upon a small basket, the type he’s seen Auntie Mitsuki gifting to his own mother and sometimes himself, it’s sitting innocently right in front of his door, and as if the hint wasn’t obvious, the basket was filled with All Might merch.
So he took it. There was a tiny card with his name written in Kacchan’s handwriting and a small “Just thought of you” which makes his heart beat faster than ever, so he quickly takes the basket to his room and starts to unbox the items, sorting them with care, neutralizer soaps with All Might’s scent, a new pair of gloves, a nail clipper for claws with All Might’s face, some scent patches with his favourites heroes colors and a cute air freshener with All MIght’s face.
It’s not a secret Izuku tries hard to hide his scent as much as he can, mainly because he doesn’t want to smell like an alpha that isn’t Katsuki, but also because it sweetens whenever he’s close to his friend and it would literally reveal how much he desires Kacchan.
“Kacchan is really considerate!” Between this and the jacket sitting on his bed with the rest of the items, he’s feeling funny.
There’s a knock in his door before being opened, the blonde of his dreams getting inside, he is the only person that could do that, Izuku trust him enough for that, besides he still has so hope that he gets walked on by Kacchan while he is busy testing a new dildo.
“Hi! Did you need something?” he turns with a smile, holding the scarf close to his chest.
“Yeah! My jacket. Give it back”
“Ah, right” he went to get it from the bed, leaving the scarf behind.
Katsuki takes it from his hand, giving a discreet sniff but Izuku notices, he always notices anything that has to do with his blonde, and for a second he is on cloud nine, is he also into Izuku?
But the near disgusted reaction made him teary eyed. Still, he can't let the opportunity leave him, he takes a step forward, and with the most gentle smile he can muster speaks up, a small request.
“I wish I could use your clothes more often”
“I can do that”