Starting from the Fox Fairy, Creating the Night Parade of Hundred Demons

Three weeks ago, strange fire marks appeared on Koizumi Yeyun's hands. From that day on, the burn marks continued to expand, making him miserable every evening. Just when he decided to chop off his hands, a strange little fox suddenly appeared in the yard. It talks to others and wants to make a deal with itself. I am actually possessed by an evil spirit? Monsters, gods, four ghosts from all directions, black shadows, golden pine... In the era when the gods died, the surviving ghosts and gods are still active, and Koizumi Yeyun has to embark on a journey to collect wishes. "Please tell me your truest wish."