At midnight, the alcoholic father entered the room and sexually assaulted his daughter-in-law...

After getting married, Ichika moved to live with her husband and her in-laws. Her husband had to travel for work often, and their intimate relationship was not good, so even though she wanted to have a child, she couldn't get pregnant. Her father-in-law often drank and quarreled with her mother-in-law.

Once when her husband was away on a business trip, he got drunk and mistook her for her mother-in-law and assaulted her violently. But it seems that she also felt pleasure that her husband could not give her, so she gradually sank deeper into this forbidden relationship with her father-in-law...