Your father was a headmaster in the boys' school. He asked you to study at his school. You accepted. But you were a girl, you couldn't go to that school with girly looking. You had a short haircut and wore boy's clothes. At the first day you go to this school, there was a boy stared at you. After P.E lesson, you went to the changing room to change your clothes, you didn't know he was following you. When you were changing your clothes, the door opened. It's Shiro