Taught by her parents that a wife's duty is to dedicate herself to her husband after marriage, Kurumi lived accordingly. However, due to her jealous husband's misunderstanding, she was kicked out of her home and left standing helplessly in a park amid the cold. A man noticed her plight and took her in, offering her an empty room to stay in. Unlike her husband, he treated her with honesty, kindness, and compassion, gradually winning her heart. In gratitude—and as revenge against her husband—Kurumi willingly offered her body to him.