Michima Shin is a 30-years-old lonely and unpopular novelist who lives alone in a big house. Shin’s father is a convicted murderer, awaiting capital punishment, who killed 3 people, including his wife, Shin’s mother.

One day, five mysterious women showed up at Shin’s house saying that they received an invitation to live with him in exchange of paying 1 million yen a month in rent. They set up rules for Shin such as no asking questions and no entering the women’s rooms.

Six months later, Shin is used to the presence of those women, however, one day, an incident occurs that changed everything.