His father remarried his younger Holy, and his son Kosuke had a young mother-in-law. - Holy was a beautiful woman and her Kosuke couldnt accept her as her mother-in-law. - One day, Kosuke sees Sei indulging in masturbation in her bathroom and cant control her desires and hugs her. - From that day on, the relationship between his mother-in-law and his son collapsed, and Kosuke decided to live alone. - Moving will be 14 days later. - However, in the few days left, Sei and Kosuke deepened their forbidden relationship ...