Yoko used to enjoy being single at her parents' house, but when she turned 40, she decided to live alone in Tokyo. A few days later, Yoko comes to Tokyo and happens to meet Isao, her first love, at the company where she came for an interview. That night, Yoko murmurs that she can't decide where to live. Even though Yoko thinks it's bad, she ends up visiting Isao's house.