One day, Yuzuru, who lives alone, meets Tsumugi, a married woman who is stuck in the neighborhood. Yuzuru, who helped her when her bicycle broke and was at a loss, became friends with her because of it. As the relationship continued, the relationship between the two deepened. Yuzuru gave Tsumugi the key, and when her husband went to work, Tsumugi also went to Yuzuru's house with a shopping bag in one hand. And as if to distract the loneliness of passing by the couple, they began to spend a dense time in Yuzuru's room.