Recently, Wataru has been concerned about his mother's body, and it has become a habit to look into Ryoko while she is taking a bath. Ryoko was aware of her son's behavior, but pretended not to know about it. One day, Ryoko sees Wataru, who has come to take a peek at the bathroom as usual. Wataru was surprised for a moment, but obediently entered the bathroom. Ryoko, who felt the love of her son, gently guides and accepts Wataru, who is erecting a dick.