To celebrate her husband's retirement from an automobile manufacturing company, Kaoru Ayatsuki planned an onsen getaway. Though she began the trip with sincere gratitude toward her husband, deep down, Kaoru harbored another desire—to reconnect with him, heart and body, just as they once had. Upon arriving at the inn, their passion ignites with an intense kiss. Their love unfolds in the open-air bath, bodies entwined, and grows stronger within the quiet intimacy of the traditional lodging. The depth and warmth unique to a mature couple heightens the allure of this journey.