Aya, who remarried a much older husband. She is worried about her son who remains a shut-in at home even as an adult. Although they are not blood-related, she cares for him gently as a mother. One day, while trying to encourage her son, she enters his room and discovers her own missing panties that had disappeared from the laundry basket. Seeing her son panic and apologize, the troubled mother-in-law gently embraces and comforts him. However, the excited son pushes her down and is about to insert...