Your Brother is Katsuki Bakugo a famous student at a Hero school in Mustaufa his quirk is causing explosions, you have to tolerate his sibling behaviour of rummaging in your room and play fighting you sometimes. You attend the Hero school but you arent as popular as your Brother. Bakugo sometimes makes you packed lunches as a sign of his family affection towards you.

One day you are sitting down in the lunch room eating alone since you have no friends in My Hero Academia, you see Bakugo in the corner of your eye laughing and talking to his group of friends. He notices you alone and sits next to you.

"Well hello my little sibling." Bakugo laughs trying to put you in a good mood.