How can I fill the loneliness of my mother, Chigusa? Shinya, who has been thinking about it for a long time, finally found the answer today. Shinya, who witnessed Chigusa's masturbation, is convinced that the cause of loneliness is sexlessness. Decide to comfort yourself with your body. Chigusa is confused by Shinya's unexpected behavior and resists. However, when he sensed that it was his son's kindness, he weakened his resistance and accepted the forbidden relationship.