requested by FMAEnvy

1297 words

⚠️ Warning: strong language

~

"Katsuki!?"

No reply...

"KATSUKI!?"

Still no reply...

"OI SHITHEAD GET DOWN HERE!" Mitsuki screams up the stairs in an attempt to gain her son's attention.
"I HEARD YOU THE FIRST TIME YOU OLD HAG!" The explosive boy screams back, angrily stomping down the stairs before the mother and son enter another full-blown argument.

(Y/n) Bakugo, younger sibling of Katsuki sat in the kitchen eating her breakfast listening to the sweet sound of arguing.

"YOU'RE TAKING (Y/N) TO SCHOOL TODAY, THAT'S FINAL!" Katsuki looks at his mom in disbelief "WHAT THE FUCK!?" He growls, sparks coming out of his hands burning holes in flooring,
"I've already spoken to your teachers, they've agreed to it." The female blonde says enough of the arguing.
"Ugh fine." He says defeated "Hey dipshit, go get your shit!" Katsuki shouts making (Y/n) fasten her pace.

"Where am I going?" She asks her mother,
"To school with Katsuki," her mother smiles, (Y/n)'s eyes widen shocked, excitedly stuffing her backpack and putting her shoes on, waiting by the front door for the older Bakugo to meet her.

The two walks down the street from their home towards Katsuki's school, "You better behave you little shit," Katsuki growls,
"You know I won't!" The child grins deviously
"WHAT DID YOU SAY!?" He shouts loudly, (Y/n) sprints towards his school with her brother coming after her at full force.
(Y/n) spots her favourite broccoli -haired boy. she runs asks hides behind him
"Help me Izu, Katsuki's gonna kill me!" She squeals enjoying how riled up she had got her brother,
"W-wait (Y/n)?" Izuku stares at her blankly, confused why she was there at their school, Bakugo ran towards them aggressively scooping up his sister.

"You listen here dipshit, you will behave today, don't do anything weird or embarrassing or I'll fucking kill you tonight!" (Y/n) sat listening to her brother's rant, biting on her hand to prevent herself from laughing, by then more of 1A had gathered round the siblings.

"Yes big brother, I will definitely behave and absolutely won't tell your classmates any embarrassing stories about you..." The younger Bakugo says slowly chuckling to herself at what she had in store for her brother that day.

Later

A tired-looking man in all black carrying his signature yellow sleeping bag walks into the classroom which (Y/n) presumed was the teacher who she identified as the pro hero, Eraserhead, he introduced the younger Bakugo, the class greet her before the turn to chat to each other.

"Surely they can't actually be related, right?" (Y/n) heard the frog-like girl who she thinks is called Asui,

"I couldn't believe it either she's so sweet, especially compared to her brother," Mina laughs,

"Wow, fuck you," Katsuki says glaring at the pink-haired girl ready to explode.

"The class has officially started, be quiet!" a smart-looking boy announces to the class, fixing his glasses as he does do before seating himself down again. The chatter quietens down and Aiwaza starts to explain the task, (Y/n) sits at her own desk next to Katsuki's which the teachers set up for her. She sits with pen and paper in front of her, completing some puzzles she brought that day.

"psst, hey! Mr Shark Teeth!" (Y/n) whispers to the spiky redhead on the right of her, "Can I tell you something embarrassing about Katsuki? No need to reply cos I'm gonna tell you anyway," Eijiro smiles indicating for her to carry on, (Y/n) looks round making sure her brother wasn't looking, "Katsu still sleeps with his light on and with the teddy our mom got him when he was a baby, don't tell him I told you," (Y/n) snickers covering her mouth to prevent her from bursting out in laughter,

"Oh man that's not very manly," Eijiro chuckles looking over to the elder Bakugo who was staring at them angrily, the blond hedgehog stomps over to the pair, "WHAT THE FUCK DID YOU TELL HIM!?" he shouts making his younger sister smile gleefully,

"Mhmm... nothing you need to worry about," she smirks

"It better be nothing brat," he scowls returning to his seat but keeping watch over his sister.

~

As soon as his glare left her, (Y/n) decided to find more of classmates who were willing to listen to her share more embarrassing stories about her elder brother, she leaves her seat and wanders around the classroom, she heads towards the small group of girls

next, she walks up to a boy with peppermint hair and a scar across his left eye, "You must be who my brother calls Half-half bastard," (Y/n) says pulling a chair up next to him leaning on his desk, he stays silent watching her, "I don't get why he calls you that because you seem nice and like a bastard," which makes the young male give her a gentle smile which quickly vanishes as a looming shadow towered over the pair, "What the fuck did you say?" he questions,

"Bastard ?" (Y/n) says quizzical watching as he became redder,

"DON'T SAY THAT YOU DUMBASS," he growls,

"Would it piss you off if I said..." She pauses wanting to build the tension, "Fuck, oooh what about bitch or dickhead,"

"Don't you dare say another word!" he snarls

"What? Why? You say them all the time," (Y/n) says 'innocently', " SHIT, FUCK, DICK," she imitates her elder brother, who stands in front her muttering curses underneath her breath, "Let's go dipshit," he sighs dragging her from the hood of her jacket out of the room.

"Wait where are you taking me," she huffs trying to escape from her brother's tight grip,

"We're gonna make a deal," he barks letting her regain composure as they stand in the storage room, "If you don't tell mom about this I'll do your laundry for a week,"

"Ooh does little Katsuki care about what his mom thinks," (Y/n) laughs mocking him,

"Whaatt no," he tries to cover up the truth, "Do we have a deal or not,"

"Maybe," she smirks knowing that their mom does all her laundry so she wouldn't exactly have to keep to her agreement before going back to his class leaving him alone in the storage cupboard.

The rest of the day was pretty uneventful, at lunch (Y/n) split her time between having lunch with her elder brother and his squad and Todoroki and Izuku, lessons were boring, well on her part as she just sat at her desk fulfilling her school work.

3:30, finally it was time to go home.

Katsuki and (Y/n) walk home in silence, their mom meets them at the front of their home

"How was going to school with Katsuki?" the blonde woman asks,

"Great, wasn't it Katsu?" she says trying to hide her grin, he doesn't reply he ignores them and stomps to his room, "Well he's not in a good mood, did something happen?" the elder Bakugo asks, "Nope, nothing happened mom, you know how he is," the young child shrugs as they walk to the kitchen.

As (Y/n) climbs onto the chair her foot slips causing her to stub her toe on the side of the wooden leg, "Shit, that hurt," she mutters, just loud enough for her mother to hear,

"(Y/n) repeat what you just said," her mom scowls exactly how Katsuki did earlier that day,

"Shit?"

"Where did you hear that?" she asks,

(Y/n) shrugs, "I dunno, I think I heard Katsuki say it some time," she says throwing her brother under the bus, just as expected her mother became enraged, she stormed to the teens' room dragging him out by the ear, both shouting obscenities at each other while (Y/n) simply watched.

The day started with them arguing and it will also end with arguing,

just how she liked it.

I know this is a mess, don't even know what happened to it at the end, sorry :/