Ancient Mountain Mystery Prequel 1

In the countryside of Okinawa, a place called Ancient Mountain exists in a city called Bay City. It is rumored that it was once a place where several cultists gathered, trying to summon evil gods to rule the world. However, in another place called Huishan, there is a group of spirit removers who specialize in dealing with ghosts and monsters. One of them, a teenager named Xu Rui'an, breaks into the ancient mountains in order to get back his lover, Shadow, and meets a monster hunter, Xiao Ling, and a mysterious man, Bao Li, and the story unfolds from there.