다음 중:Suzu, a university student, is a tutor for Urara, a female student who is her childhood friend. They were like her real sisters. One day, Suzus boyfriend, Tetsugu, notices Urara. Philosophy is a thug, and he partially deceived the innocent Suzu into dating her. In order to borrow money from her older brother, who has a sexual interest in female students, she plots to offer her secrets... Eventually, Suzu is also degraded as a plaything for her peers, and the curtain on the circle of hell rises...