A mother carries a secret she can tell no one. When her adult son once made a move on her, she could not resist his hands, lips, or hard cock, and their incest role-play relationship continued until he moved to Tokyo. They buried the past and stopped touching, but now he has returned home with his girlfriend. She is relieved that the young woman is lovely, yet as a mother—and even more as a woman—she feels lonely and jealous watching her son slip away.