When his clan is wiped out by a beautiful demon, young Taikobo finds himself in charge of the mysterious Houshin Project. Its mission: find all immortals living in the human world and seal them away forever. But who do you trust—and whose side are you really on—when you've been trained to hunt demons by a demon?
The story is set in legendary China. A beautiful female fox spirit named Dakki is controlling the emperor Chu-o and the ruling In dynasty, and is using her power over him to do evil in the nation. An immortal-in-training named Taikobo is chosen by the great immortal sages for the Houshin Project - to seal away or destroy the evil demons that infest the world. In the course of his adventures, Taikobo gathers other powerful companions and sets out to seal away the demons and eventually destroy the fox-spirit Dakki.