It's been ten years since my husband died. Hotaru, a mother who finally started thinking about happiness as a woman after her only son, Tsuneharu, got a job. However, she still has feelings for her deceased husband for her lover, Seiichi, who is in a relationship, and even if it were a physical relationship, she could not take a step forward. Just when he thinks that things can't go on like this, Tsuneharu and Seiichi suddenly get into a fistfight. Surprised by the sudden turn of events, Hotaru asks him why, and finds out about Tsuneharu's secret feelings for him.