The innocent younger sister was constantly touched by her brother at home. Right from the first meeting, two mischievous children of her stepmother looked at her, maybe because she was so beautiful and sweet that they could not take their eyes off her emotions. The first day of the seemingly smooth mother and daughter, that night, while talking on the phone, Ninomiya was suddenly attacked and raped by the youngest son of his stepfather. After being raped, he showed his brother the video he recorded.