I've had a casual sex relationship with my son's friend for five years. My unreasonable, fiery play with a younger man… I'm addicted to sex acts. Tada Yuka JUQ-331

Marina lives with her older husband and college-aged son. While she enjoys a peaceful life in her happy family, it deprives her of the pleasures of being a woman. It is then that she meets Daichi, a friend of her son. He often comes to their house to play, but it's not too late until he keenly observes his puberty. One day, Marina succumbs to his intense desire. Five years later... they still have a relationship. Daichi also has a girlfriend. Despite this, the two once again engage in deeper, more intense intercourse...