During a visit to a secluded mountain hot spring, Hiroto encounters the innkeeper’s wife, Azusa. Drawn by her grace and allure, he finds himself drawn into an intimate evening beyond simple relaxation. Their encounter unfolds in the steamy waters, blending gentle seduction with escalating desire. Azusa yields to his touch with a quiet passion, revealing deep-seated yearnings amidst their entwined bodies and breathless whispers of pleasure in the hidden spring.