After seeing her mother, Keiko's masturbation, her son can only see Keiko with erotic eyes. One day, he finally takes action. Aphrodisiac is added to Keiko's tea to make her strongly lustful and attack. Although she resisted, she couldn't compete with her son's power and was incontinent and was raped as it was. Keiko gradually drowns in a forbidden relationship, even though she feels guilty because she has crossed a line that should not be crossed with her son, but she cannot forget the pleasure of being raped. The fate of a perverted son who likes to urinate, a nympho mother, and a parent and child ... [* There is some disturbance in the image and sound]