Yu, who was chosen by Kazuo, the eldest son of the Oshima family, which has been a family of doctors for generations, is about to marry into the family. However, Kazuo is a man who does not give bait to the fish he catches, and he immediately becomes cold towards Yu after their marriage. The only person Yu could turn to was her brother-in-law, Yoshio. As Yu sought a place in the Oshima family, she ended up having a relationship with Yoshio... But unfortunately, their relationship is exposed. 'An unfit wife for the Oshima family,' Yu is branded as unfit and subjected to inhumane training begins...
