Natsumi, a female college student attending a university in Tokyo, lives in a luxury apartment left to her by her parents and leads a carefree life. However, her older sister Keiko moves into Natsumi's room after her brother-in-law dies in an accident. Natsumi, who is quite promiscuous, is no longer able to have the sex she loves because of her sister...

Cast

Yumi Yoshiyuki

Keiko Momoyama

Kazu Itsuki

Satoru

Kyoko Godai

Yayoi Ozaki