Yuki, a housewife who thought that her son had grown up and that she would cherish the couple's time from now on.However, unsatisfied with having sex with her husband for the first time in a long time, she secretly starts masturbating.Her son came home by chance there.A son who was lusting after seeing his mother's glossy naked body violates her mother on the spot.Her son was also drunk, and Yuki thought it was a one-time mistake, but from that day on, her son's behavior began to escalate.