My wife, Nanami, who was initially reluctant to live with her father-in-law, understands that her dream private yoga school can be done at her parents' house. One day, her father-in-law who witnessed being attacked by a guest man during her private lesson misunderstood that Nanami was cheating on her and extorted. The father-in-law who once lost the tag continues to commit every time after that. Nanami was gradually dominated by her father-in-law, and even when she had a husband, she had a physical relationship with her father-in-law.