Yu is married to Kazuo, the eldest son of the Oshima family, who has been a doctor for generations. However, Kazuo is a man who does not feed the fish he catches, and as soon as he gets married, he hits him coldly. It was her brother-in-law, her Yoshi-husband, whom Yuu had no choice but to cling to. She ends up having a relationship with her Yoshi-husband, asking Yu to find a place for her in the Oshima family. However, the relationship between the two is exposed. She was disqualified as a "bride unworthy of the Oshima family" and her cruel training began...
