When unexpectedly discovering her son Kenta's sexual proclivities, Yuuko felt both confusion and an indescribable excitement. Kenta, who indulged in masturbation without studying properly, had an confiscated AV collection. The contents featured mature actresses from her own generation, including some with incest themes. As a mother, should she admonish him, or as a woman, should she accept it? Yuuko's heart wavers upon knowing her son's twisted desires...
