At the end of the sad sisters' rape...

Maiko, a new wife who has left the company after getting married, is about to be raped by Yosuke, her former boss who had been in love with her for some time. Fearing that the incident will be discovered, Yosuke conspires with Maiko's twin sister, Akane, who holds a grudge against Maiko, and imprisons her in the basement.