In the lush and green capital of Kazamatsuri, civilization and nature coexist in an ideal environment. In this city lives Kotarou Tennouji, and he spends his normal, everyday life with his friends Kototri Kanbe, Haruhiko Yoshino, and others. However, in that peaceful city of Kazamatsuri, once a year, there is a time when things are a bit turbulent. The city swells as it has a harvest festival. This festival is just like an enormous culture festival, and Kotarou has started a part time job collecting material for articles about it. In Kazamartsuri city, there are whispers of information on unconfirmed creatures and occultic rumors are flying as if they are real, and that is why Kotaru has undertaken this job! At the same time, within Kotarou’s body, a mysterious incident is beginning to befall upon him. Kotarou requests help from Akane Senri, who is the president of the Occult Club, and involving his fellow students, they begin the investigation… For Kotarou, it was just supposed to be a small adventure. If he was with his boisterous friends, then that was good enough for him. However, Kotarou doesn’t realize what is going on. In fact no one knows what the “truth” is that this quest is actually connected to. Does he really have the power to rewrite something? What about her…. fate?