Yumi, a mother, seduces her son's friend who came to stay with her with her angelic smile. Excited by the smell of her underwear in the laundry, she masturbates without being able to help it. The young man's overflowing desire is unstoppable! Yumi's Ke'ai smile makes her son's friends go crazy for her! Their relationship deepens, and they even have creampie sex! Today, her son's friend comes over to the house of this slutty mother who says, "Let's keep it a secret from my son."