Shino Oishi used to enjoy an annual hot spring trip with her best friend. However, this year, her friend faced a sudden family tragedy and had to cancel the trip. Unwilling to waste the money on cancellation fees, Shino decided to go alone. At the destination, she met Kenzo Tanaka, a man hitchhiking across the country. Unlike her serious, work-focused husband, Kenzo lived a free-spirited and radically different life, and Shino found herself drawn to him. The two ended up spending the night together at a hot spring inn, rekindling physical intimacy she hadn't experienced in years. For the first time in a long while, Shino felt the joy of being desired as a woman. When morning came, they returned to their separate lives, but the brief time they shared created a deep emotional bond. Though it was just a one-night romance, the passion she felt left a lasting impression on Shino's heart.