Shoko lived peacefully with her husband and his son, but one day she discovered an adult DVD in her stepson's room. To her shock, the video featured herself—revealing her past as an AV actress. Confronted with the truth, her stepson made an unexpected confession: "I want to have sex with you, Mom." Though stunned, Shoko decided to respect his feelings and agreed to abstain from masturbation for over a week. As tension built, the two navigated their desires, gradually forging a new, intimate relationship.