Mha-Sero Sibling

(NOT CANNON! You are sero's younger/older brother/sister and you are in ua for the support course. you can choose everything about you but you do call sero "ero" for short and he calls you whatever nickname.Younger:he teases you playfully but protective. older:you tease him playfully but protective,a little sarcastic and not afraid to fight back. He is with the Baku squad when he goes to see you and the Baku squad notices and asks where he's going.)