Lately, Yuri, his mother, seems lonely. Shinji wants to cheer her up and has been racking his brain about it. One day, he catches Yuri in the act of masturbating. To fill his mother's loneliness, Shinji decides to take his father's place and embrace Yuri. Understanding that this is Shinji's way of being kind, Yuri accepts their forbidden relationship... Shinji was incredibly virile. Even after surpassing Yuri's limits, Shinji's thrusts continue endlessly.
