Seeking to rekindle the warmth between them, Rin travels to a hot spring with her husband. However, her husband is consumed by work and fails to notice her emotional needs. As she soaks alone in the bath, her heart gradually grows colder. Then, by chance, she meets Yamashita. Touched by his kindness, Rin finally opens up and reveals her true feelings. Seeing her lonely expression, Yamashita is overwhelmed by uncontrollable desire. Craving the affection she's denied at home, Rin seeks solace in another man's warmth. The joy of being desired as a woman etches itself deeply into her heart.