One day, Yuzuru, who lives alone, meets Tsumugi, a married woman stuck in his neighborhood. When her bicycle breaks down, Yuzuru saves her and becomes friends with her... As the relationship progresses, the relationship between the two deepens. Yuzuru gave Tsumugi a duplicate key, and when her husband left for work, Tsumugi started heading to Yuzuru's house with her shopping bag in hand. And the couple