Sumire has been married to her husband for five years. Feeling that she was no longer seen as a woman by him, she had an affair with Yoichi. Sumire felt guilty for betraying her husband, but each time she met Yoichi, her feelings for him grew stronger. "Today I will finally tell him it's over," she would think, but after experiencing Yoichi's kindness and the pleasure of being treated like a bitch again, Sumire became even more dependent on this relationship…
