Yumi felt lonely with her husband coming home late every day and her son constantly busy with part-time work. Remembering how much her husband once loved her, she began masturbating to ease her loneliness. Seeing her distress, her son, who hadn't worked a shift in a while, stayed home one night and listened to his mother's feelings. Overcome with emotion, he declared, "I won't let you feel lonely anymore," and unable to restrain his desire, he pinned her down. Though aware of the taboo, Yumi gradually lost herself in the pleasure, surrendering to the sensations.