During her student days, Hinata had a secret relationship with her beloved teacher Yukiwo, which eventually led to marriage. Though their life was happy, the age gap was noticeable, and she felt some dissatisfaction with their gradually decreasing intimate moments. Wanting to rekindle his interest, she greeted him in lingerie, only to find that Yukiwo had brought home Iihara, her former classmate. Alone with Hinata, Iihara couldn't restrain himself and made advances towards her. However, this clandestine betrayal was orchestrated by Yukiwo, driven by his twisted desire to see his wife take pleasure in being violated by another man.