Ryoko, the mother of Kanji, felt a man's desire for her son. Unable to suppress her surging lust, she accidentally has a relationship with her son's friend, but Kanji catches them in the act. 'I've always liked you,' he confesses. 'Please don't be with another man.' Knowing each other's feelings, the two become one in body and mind. However, to keep any other men away from Ryoko, Kanji takes certain actions... The first fist sex of the beautiful mature woman, Ryoko Kuroya! You must see how her vagina is penetrated by a fist stretched to its limit!
