In Kamitsumihara, a land imbued with magical remnants and mythical legends, Touka Gettan unfolds. For generations, the Kamiazuma clan has been its guardian. The story primarily revolves around the clan's protagonist, Touka Kamiazuma, and his fateful encounter with Momoka Kawakabe, a young girl who has come to dwell with them. This meeting sets off a chain of events that reignites an ancient tale.