Upon hearing that her daughter and son-in-law were fighting, Yukino stepped in to mediate. As a mother wishing for her daughter's happiness, she even stayed overnight to try to persuade them, but the cause of their worsening relationship was her son-in-law lusting after Yukino, and her actions were like pouring oil on fire. When she learned this fact, Yukino felt confusion and guilt, as well as an intense physical ache that overwhelmed those feelings. 'Keep it a secret from our daughter,' he whispered in her ear, unable to hold back.
