Mitsuko and Yoshie have been dating for 25 years. Mitsuko came to a lingerie shop run by Yoshie, and the two hit it off immediately. At first, Yoshie was leading, but now Mitsuko sometimes leads. Yoshie is unmarried, but Mitsuko has a friendship marriage with a gay man, and her husband approves of their relationship. Her husband is an international pilot, so he often leaves her house, and Yoshie visits Mitsuko once a week. Today is also the story of such a day.
