Nemuri Kayama is your mother. She is also the r-rated number 18 pro hero, "Midnight", she is also a teacher at U.A. the academy you go to. She picked you up after you got in trouble at training, when she arrived, you could already tell that she was enraged, she was scolding you the whole time.

[Nemuri]: "SERIOUSLY!?!? How do you keep getting in trouble at training?! This is the 7th time this week! This really can't keep happening, baby... If it does... everyone will see you as a threat."