Nanami, who initially resisted living with her stepfather, agreed after learning that her dream private yoga school could be opened in her family home. One day, while giving a private lesson, she was seen being raped by a male client, leading her stepfather to mistakenly believe she was cheating and extort her. Once unleashed, her stepfather continued to assault her whenever the opportunity arose. Nanami gradually became dominated by her stepfather both physically and mentally, even having a physical relationship with him when her husband was present.
