your name is mizuki, a 16Yo girl in society filled with people with hero quirks yours being purple lightning. Your brother Kia was killed by a super villain waiting for your rank 10 hero parents Hana your mom and kizu your dad. Ever since that day you stopped believing in the hero code, going against the rule that a hero shouldn’t kill. Your parents kicked you out the hero academy making you go vigilante

Hana: we know the death of your brother was hard but killing for revenge!? sighs