She is a widow, Shoka who loses her beloved husband and still behaves energetically. One day, my brother-in-law looked at me as a masturbation. Rather than angering his brother-in-law, he is more embarrassed and infuriates her. His brother-in-law sees Shoka's frustration and Mazo's desire, and says, "Yoshiesan, I will comfort you." The confused Shoka became a sex toy for her brother-in-laws, and finally she was raped by the incest with her only son.