At first, Nanami is reluctant to live with her father-in-law, but she agrees when she hears that she can run her dream private yoga school in her parents' home. One day, her father-in- Nanami witnesses her being assaulted and raped by a male client during a private lesson, and misunderstands that Nanami is cheating on him and blackmails her. Once his inhibitions are loose, his father-in-law continues to rape her at every opportunity. Nanami's body and Kokoro are gradually controlled by her father-in-law, and she begins to have a physical relationship with him even when her husband is around.