Married for 20 years, Yumi finally bought her own home and was living a smooth life with her husband and daughter. However, just two weeks later, her husband was transferred to a single-person assignment. Unable to suppress her irritation, Yumi vented to her part-time job colleague, college student Yuki. Having just moved, Yumi didn't know her way around, but Yuki always treated her kindly. At that time, Yumi did not yet know: Yuki's feelings, Yuki's intentions, and the fact that she would never be able to return to her husband, to a man.
