She always found joy in talking to him. One day, Yohei suddenly had a headache, Mayumi immediately helped him into the house and took care of him. Even though her husband was waiting at home, she still stayed to take care of Yohei. Yohei suddenly confessed his feelings and kissed her. Even though she refused, she herself knew she had feelings for him. After that day, she went straight to his apartment every day, quickly made love to him, and returned right after they finished. All fun must come to an end, the day came when Yohei had to go study abroad, and the two would have to separate. Yohei would have a bright future ahead, while Mayumi would continue her peaceful life...