For the world of Wangchuan, human beings are creatures that have existed since the beginning of chaos. They have been accompanying the growth and decline of this world. They moved from magic to technology and eventually destroyed the gods they believed in.
As a price, they face a world where ghosts and monsters are rampant. Technology may destroy the products of magic, but it cannot make them disappear after all.
In order to maintain the stability of the world, some people who still have traces of magic on their bodies inherited the will of their ancestors, became spiritual warriors, and began to fight against magic.