"Yuuna and the Haunted Hot Springs" is a supernatural romantic comedy manga series set in a boarding house called Yuragi-sou, which is infamous for being haunted. The protagonist, Kogarashi Fuyuzora, is a teenager with psychic abilities who has experienced hardship due to his ability to see and interact with spirits. Seeking a place to live, he moves into Yuragi-sou, only to discover that the ghost haunting the establishment is a beautiful girl named Yuuna Yunohana. Yuuna, who cannot remember the circumstances of her death, is bound to the inn and unable to move on to the afterlife.

Kogarashi decides to help Yuuna resolve her unfinished business so she can pass on peacefully. However, his life becomes increasingly complicated as he encounters other residents of Yuragi-sou, each with their own quirks and supernatural traits. These include Sagiri Ameno, a shrine maiden with a split personality; Chisaki Miyazaki, a mermaid who transforms into a human on land; Oboro Shinto, a ninja with a crush on Kogarashi; and others who add to the chaotic and comedic atmosphere of the boarding house.

The narrative blends humor, romance, and supernatural elements, with Kogarashi often finding himself in awkward or perilous situations due to the eccentricities of his housemates and the spirits he encounters. As the story progresses, Kogarashi and Yuuna grow closer, and their bond deepens, even as they face challenges related to Yuuna's unresolved past and the mysteries surrounding her death. The series explores themes of friendship, love, and the importance of resolving emotional burdens, all while maintaining a lighthearted and often comedic tone. The interactions between the characters drive much of the plot, with each resident of Yuragi-sou contributing to the overarching story in their own unique way.