Terrifying Girls' High School: Women's Violent Classroom

恐怖女子高校　女暴力教室

Also known as Women's Violent Classroom, Kyôfu joshikôkô: Onna bôryoku kyôshitsu, Fury of Bad Girls

Delinquent girl boss meets and conflicts with an orphan girl who lives an isolated life after the dramatic deaths of her parents. She plays the piano, but stands up against her lecherous guardian, who is also a school official.