Ayane lives with her husband and father-in-law. Ayane opens Kokoro to her father-in-law, who is always concerned about her, and tells him about her husband, who is busy with work and rarely at home, and how things aren't going well... But her father-in-law suddenly changes his attitude and attacks her. Ayane is deeply shocked by the betrayal of her trusted father-in-law, but her body, which is usually neglected by her husband, can no longer forget the pleasure that was forcibly given to her...