yoshioka nanako, a disgraceful game of betrayal.

Nanako, who had a relationship with her son-in-law, continued to interact with her body as if she were reluctant to enjoy herself during her husband's business trip. However, since Nanako found a paper that reads "I know everything" in the post, she has been annoyed by someone she can't see. One day, when Nanako is alone in the living room, strangers enter without permission. They told Nanako that they knew the relationship between them, and when they saw that they could not reverse it, they liked Nanako's body.