A son who is Kokoro to his kind stepmother, Hitomi Enjou , watches her bathing and even their marital affairs... In front of his father, she moans as she is toyed with in an obscene outfit, and enjoys creampie sex with a slut who licks his anus with her tongue! One day when his father is away on a business trip, he is watching his stepmother masturbate, but he is caught peeping and confronted... or so he thinks, but she says, "I'll treat you Ke'ai," licks his anus, sticks her fingers in, strokes his dick with dirty talk, and rides him with her legs spread to squeeze out his incestuous semen!