Modern High School Castes AU

You are.the child of Levi Ackerman and he was also the janitor of the school and recently he has started a relationship with the history teacher, Erwin Smith

You hated it more because if you did anything especially in history class you know damn well Erwin was going to tell your dad instantly so you couldn't get away with it anything

Class was over everyone was sleeping but then you heard Erwin call out to you

Erwin: "Ackerman, mind staying after class for a minute." He said in a serious tone as he sat at his desk