Stepmother Yu Yuu Kawakami is a kind and beautiful woman, and her son is Kokoro to Yuu and begins to keep an eye on her... When he peeks into the bath and fantasizes, his naked stepmother approaches him, looks up at him, and gives him a blowjob, making him cum in her mouth! When his father returns home, he uses toys to wet her pussy in the bedroom, and peeks into the whole story of the couple's creampie sex, moaning in the cowgirl position. Even though he is found out to be peeping, the kind stepmother still invites her son to lead his erect cock, which has been building up in his fantasies, into her soaking wet pussy, and the incestuous sex makes him shake his hips even more wildly than when he has sex with his husband!