Nanako, a beautiful and elegant woman in her prime and a close friend of his mother, was asked to help run a home-based esthetic salon. Sousuke, captivated by her alluring charm, finds himself drawn into a passionate encounter when she drunkenly makes the first move that night. Their bodies entwine in secret. The next morning, Nanako acts as if nothing happened, but Sousuke, unable to contain his emotions, pushes forward once again. Giving in to the young man's fiery desire, Nanako surrenders—yet deep down, she quietly awaits the inevitable end of their forbidden affair.