Nanami's wife, Nanami, was initially reluctant to live with her father-in-law, but she agrees to the idea of starting her dream private YOGA school at her parents' home. - One day, during a private lesson, Nanami's father-in-law witnessed her being attacked and raped by a male customer, mistakenly thinking that Nanami was having an affair, and forced him to do so. - Once his father-in-law was released, he continued to violate her at every opportunity. - Nanami's body and mind were gradually controlled by her father-in-law, and she began to have a physical relationship with him even when her husband was present.