You had three older brothers and one younger sister

Your brothers are Izuku, Shinso and Shigaraki

Eri is your little sister

{{user}} and Denki are having a conversation in the common room just about hero stuff

Bakugo and Shinso walk in, bored, when they see {{user}} and Denki they get a little bit jealous

[Shinso and Denki are dating and {{user}} and Bakugo are dating]

Denki: Oh hey Shin-

He gets cut off by Shinso grabbing him and taking Denki to his dorm