ALL IS FAIR IN LOVE AND WAR
You and Katsuki have known each other since middle school, and have always notoriously been at each others' throats as naturally gifted students. Things take a frustrating turn when you both end up at UA, as those darned teenage hormones begin to run high…
a/n: it's my first time in a few years writing something longer gang, you'll have to bear with my (probably nonsensical) pacing xoxo
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“Hey Kacchan!” You called out, bursting into a light jog towards the only familiar face you had seen that morning. You smirked as you watched him tense up at hearing that godforsaken nickname that you just loved to tease him with, causing him to spin around rapidly, although not to greet you.
You were feeling good in your new uniform- it was as comfortable as any school uniform could be, and fit almost perfectly. The man in front of you, however, looked like his trousers were a size too big as they pooled at his ankles. You were sure Mitsuki probably had to wrestle his tie onto him for a ‘first day’ photo before he left the house that morning, that surprisingly was still neatly tucked into the collar of his shirt.
“I can’t believe you’re wearing a tie, are you even the real Katsuki?” You teased, eyeing up and down in feigned suspicion whilst his scowl only grew stronger.
“Shut up, you’re so obsessed with me.” He scoffed, not willing to yell at you before he even walked into his dream school, “Can’t believe I have to deal with your annoying ass for another three years.”
“And the rest of our decades as pros after that! You know we make a great team- we could even put our agencies next to each other.” You smirked, knowing exactly how to piss him off.
“Why do you always have to be such a pain in the ass?” Katsuki shouted half-heartedly before continuing to walk towards your new homeroom. He didn’t refuse your suggestion- you smirked.
You refrained from teasing your long time ‘best friend’ on your way through the building, using the time to look around the halls of the prestigious U.A. High and really soak it all in. You were really here, on your journey to being a hero. Looking out through the long glass windows you observed the masses of students still making their way across the grounds, as tiny as ants from this distance.
Katsuki glanced over his shoulder, watching you for a moment as you stared out of the window peacefully. He hated to admit it, even to himself, but you might not be so bad when you weren’t deliberately trying to push his buttons. He turned away and opened the classroom door, quickly shoving his tie into his bag and kicking his feet up on the desk.
One difference between you and Katsuki was that you were willing to make friends with other people; that was something he’d never understand about you. Once you entered the room, you were practically swept up by a girl who was completely pink, with a wide smile and eager eyes.
“Hey! I saw you earlier on the way in and you are so so cute!” She said, squeezing your hands in hers enthusiastically, “My name’s Mina, wanna be friends?!”
She bounced up and down slightly, watching you as you nodded and told her your name in return before calling another girl- Tsu- over to meet you. As you waited for your teacher to arrive, you chatted with the girls about how amazing it was that you had gotten into U.A. Conversations throughout the room quickly ceased as the voice on your homeroom teacher filled the air, introducing himself with nothing but exhaustion before telling everybody to put on a gym uniform and head outside.
“Are you friends with that shouty guy?” Mina asked on your way down the stairs.
“Oh, Katsuki? Yeah, I guess you could say that.” You started, “We were in middle school together but its more like a rivalry than a friendship- I don’t think he actually likes me that much.”
“Ooohhh drama~!” She smirked in a sing-song voice, excitedly jogging ahead of you, “See you out on the field, ‘kay?”
Once you had changed into your gym clothes, you walked out into the slightly chilly spring air, the sun’s faint warmth overpowered by the cool breeze glazing over your exposed forearms.
“A quirk assessment this early?” Tsu whispered from beside you, “I hope he isn’t serious about expelling anybody.”
“He doesn’t seem like the kind of guy to make jokes…” You responded, watching as Aizawa instructed Katsuki to throw the ball as far as possible using his quirk.
You weren’t surprised when you heard how far it went, after all, you already knew how powerful he was. In your way to the first assessment, you managed to catch up to Katsuki, hands in pockets as he walked over.
“Great job with the ball toss, bigshot.” You smirked, poking his cheek as his pursed lips quickly turned back into his signature scowl.
“Shut up! I’m gonna destroy you in every damn one of these tests!” He yelled, sparking up his palms towards you, but you only swatted them away and giggled, making his anger worse.
Despite his harsh words towards you, he never actually called you anything too demeaning, unlike with other people.
“Maybe in your dreams, Kacchan.”
Rivalry and teasing aside, you and Katsuki had some kind of close bond; the kind where you knew you could trust each other if it came to it in a life or death situation.
Little did you know just how soon that bond would be tested.
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