It's been 16 years since I married my beloved husband. Chisato is a wife who sends off her husband and son off at the entrance and has a lot of free time until 3pm. Her husband called Chisato, and before long, she became "Ka-san," and while the peaceful daily life of a family continues, Chisato has forgotten herself as a woman. One day, a meeting with a painter awakens the joy of a woman sleeping in Senri. Chisato loses herself in an exciting afternoon that she has never felt before, and as a married woman, she crosses a line that she must not cross...