Marina Torena is a close mom friend. One day, when she was having her usual tea party, the topic turned to her sex life. Rena seems to be having a fulfilling sex life with a young man she met on the app, and even forcefully recommends the app to the shy Marina, telling her ``just once''... Shinji, a student I met through the app I started, is a cute, obedient and obedient boy. Marina awakens to the pleasure of dominating her younger self, and gradually begins to drown in her mind and body in dangerous play with her younger self.