Houshin Engi (Soul Hunter, Senkaiden Houshin Engi, Romances of Sealed Gods, Soul Hunter - Battle of the Immortals, 仙界伝 封神演義)

The story is set in legendary China. A beautiful female fox spirit named Dakki So is controlling the emperor Chuu-oh and the ruling In (Yin) dynasty, and is using her power over him to do evil in the nation. An immortal-in-training named Taikoubou 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, Taikoubou gathers other powerful companions and sets out to seal away the demons and eventually destroy Dakki herself.