Takashi is living with his girlfriend Miwa.
Miwa's friend Rika, who came to visit, takes a liking to him.
Rika demands his body not only when she is away but also when she is at home.
Rika has large breasts that Miwa doesn't have, and she performs dirty, clingy acts
that Miwa won't do. His body...and his heart...are being taken over...
