On the night before her husband left for a work assignment, Hisayo slowly enjoyed foreplay with him in the bathroom, then deeply made love in the bedroom, savoring his warmth. But as his absence dragged on, loneliness overwhelmed her, and she gradually began drinking excessively. One day, drunk after tending to her son's home, she returned and started masturbating in her room. At that moment, she discovered her son sneaking into the room and spying on her—impulsively, she began sucking his erect cock. The next morning, unable to restrain herself, she crept into her son's room and engaged in a forbidden relationship with him.