Starting today, Minami will be doing morning exercises every day. Every morning, she meets the diligent college student living in the apartment that her husband owns. He always looks towards the future, cheerful, and friendly. She always finds joy in chatting with him. One day, Yohei suddenly has a headache, and Minami immediately takes care of him by bringing him into the house. Despite her husband waiting at home, she stays to take care of Yohei. Yohei suddenly confesses his feelings and kisses her. Although she rejects him, she herself knows that she has feelings for him. After that day, she goes straight to his apartment every day, quickly makes love to him, and returns immediately after they finish. Every joy comes to an end, and the day comes when Yohei has to study abroad, and they have to part ways. Yohei will have a bright future ahead while Minami will continue her peaceful life...