Narumi lived alone with her father and had a physical relationship. Wanting to somehow escape from the incest between father and daughter, the daughter was satisfying the sexual desires of male students at school in an attempt to find a man. When her homeroom teacher found out and scolded her, she asked for a home visit to explain the situation. However, this angered her father, who violently raped her. In order to escape, the daughter decided to have sex with her teacher herself.