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Language:
English
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Published:
2025-05-02
Completed:
2025-05-20
Words:
9,053
Chapters:
4/4
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16
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Cute Little Sister

Summary:

You came to Oya High to bring Seki's lunch because he forgot. You're his younger sister, your parents are divorced and you were living with your mom across town but now you decided to move back. Everyone in Oya High knew Seki had a sister because he always talks about you since he loves you a lot. That is why Murayama was so curious when you show up at the school.

Notes:

I should rewrite this, but I'm lazy, sorry 😅

Chapter 1: Oya High

Chapter Text

You open your eyes in the morning woke by the sounds of the birds outside and the sun hitting your face. You sit on the bed reaching for your phone and realizing that you slept too much, It's 10 am already! You cuss to yourself.

Even that you have nothing planned for the day since it's been only two weeks that you come back home to live with your dad and brother you still wanted to keep a good schedule. One of the reasons you decided to come back, not just because of them, was also because you finally were able to get into college, you manage to get a scholarship on a school in sannoh district to become a nurse and you and your mother never got along anyways.

You never wanted to live with her after the divorce, since you and Seki were always together, but she didn't care, she said it was for the best because your dad was drinking to much and Seki couldn't stop getting into fights, but still you love them just the way they were. Seki always look after you and your dad besides the drunk part was a very kind man, but you and Seki were to young to say anything at the time and your dad agreed with your mother decision. But now, you are a big girl, you can make your own decisions and that is what you did.

You got out of the bed and went to the kitchen to have some breakfast, the house quiet since Seki already is at school and you dad at work. 

You open the fridge to get stuff for you breakfast when you notice the lunchbox you had prepared yesterday. Since you got back you wanted to take care of your family, even that it had have been years and they both manage on their on you saw how much they needed some help. Your dad were able to stop drinking and Seki was a big man now but still you saw how much the house were a mess when you got there and they were definitely not eating properly as well by you could see all the frozen food on the fridge, so you made a note to yourself that you would help, you organized the house and started cooking them meals everyday. At first you thought it would be too much of a chore to take care of two grown man even that they were family, but their smiles every time you three would eat together paid if off. 

"Whaaaat, this is so good sis! I can't belive you cooked all this, right dad?" Seki said shoving a lot of food on his mouth and them smiling with his mouth full.

Your dad that it was also with his mouth full nodded and smiled with his eyes. He shallow the food and them put his hand on your head. "I'm so happy that you are here with us Y/N, we missed you so much"

That memory made you smile. You pick the lunch box with a frown wondering why it was still there and realised that it was the one you made for Seki. He might have forgotten about. It makes sense since he is not used to bring lunch to school, he had told you that most of the times he would just eat whatever he could find on a vending machine and that is why you made sure that you would make his lunch everyday.

You finish your breakfast and changed your clothes, picked the lunchbox and determined start making your way to Oya High. You knew it was a dangerous place, along the years apart you big brother never let you out about a good fighting story, it always amazed you that the craziness never seen to stop and Seki always called you to tell something new kinda become one of your favorites time of the day. He would always call at the end of the day and you would listen to it like a bedtime story. Of course you didn't belive in all of it, like that time he said his best friend Murayama become the leader of the school by not just taking 100 punches but kicking the ass of everyone after that, you laugh at it even that you brother swore it was true. Seki talked a lot about this Murayama guy, you even tease him once asking if he had a crush on him or something.

"Bakaaa, of course I don't have a crush on him, He is just so cool that is impossible to not talk about him, I never saw someone like that, He's a fucking beast". A best huh. You wondered how much of that was true and couldn't shake the feeling of wanting to meet this guy.

You stop in front of the school, hearing so many stories about it haven't prepared you at all for what you saw. That place looked fucking haunted, you swallowed dry and debated if It was a good idea coming here, but now that you were here curiosity were getting the best of you, you clutch to the fact that not just your brother is very tough but his is bestfriends and right hand of the Leader of Oya, so you took a deep breath and passed the gate. 

It was surprising quiet, probably because it was still morning and the boys were to lazy to fight. You passed the front of the school with no problem, but then as you turned the corner you saw two guys arguing with it other. You stoped on you tracks without being sure of what to do, you didn't wanted to go through them but there is no way of keeping walking since they are in the middle of the corridor. As you in debate on your head one of them spots you. 

"Oy! Who the fuck are you?"

The other guy look at you as well, He frowns at first but then he gives a devilish smile looking you up and down.

"Hey princess. What a pretty thing like you is doing here?"

They start making their way at you, and you start cold sweat. Maybe it wasn't a good idea coming here after all, you think. When you start preparing to run the hell out there you hear another voice shout.

"Oyyyy, the fuck is going on here?" You can't see who it was but the two guys in front of you froze and made a panicked face, they turn around and bow at him.

"Murayama-san!" You hear one of them say. Murayama? 

"W...We were just helping this lady out, I think she is lost" 

"I'm not lost" You say.

You pass the two boys in front of you and look at the boy with a cute blue bandana on his forehead. "I'm Seki sister, I'm looking for him. Do you know were he is?"