Oriko "Okko" Seki survives a car accident that claims her parents’ lives during a family trip to a Shinto spring festival, relocating to her grandmother’s traditional Harunoya inn in the hot springs town of Hananoyu. Grappling with grief and rural life, she encounters spirits tied to the inn, including the ghost of Makoto "Uribo" Tachiuri—her grandmother’s long-deceased childhood friend—who mentors her in embracing her role as junior innkeeper, guiding her through daily tasks and social challenges.

At school, Okko faces rivalry with Matsuki Akino, a fellow innkeeper’s daughter, and meets Matsuki’s deceased sister Miyo, whose mischievous antics mask lingering regrets. Her supernatural ties deepen when she frees Suzuki, a diminutive bell-bound demon who aids her innkeeping. These spectral bonds initially shield her from confronting her loss, but her growing dedication to guests—a grieving father-son pair, a trauma-recovering woman—nurtures resilience. Yet her increasing joy dulls her spirit sight.

A turning point arrives when Okko discovers guest Mr. Kise caused her parents’ accident. Confronting him fractures her suppressed grief, severing her ties to Uribo and Miyo. Guided by fortune teller Glory Suiryo, she confronts her pain, vows to uphold Harunoya’s creed of unconditional welcome, and collaborates with Matsuki to revitalize the inn, transforming rivalry into partnership.

At the story’s close, Okko finds closure by performing the annual Shinto festival dance, embodying acceptance of loss and commitment to her path. Assured of her strength, the spirits depart peacefully, hinting at future reunions across lifetimes. Her journey traces an evolution from spectral reliance to human connection, anchored in forgiveness, community, and healing through service.