Once, there were two worlds that existed on this earth. In the sky where the deities lived was the Senninkai. On the ground where, of course, the people lived was Ningenkai.
When his clan is wiped out by a beautiful demon, young Taikobo finds himself in charge of the mysterious Hoshin 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?