In another space parallel to the ancient capital Chang'an City, demons rely on the existence of contemporary ancient buildings to survive in the other world. Because of mankind's endless construction projects, the space in the inner world has become increasingly narrow. One day, thousands of demons fled to Chang'an City, blended into the human world, and began to do evil. Human beings created an organization of demon hunters and began to hunt demons. The demons living in the human world gradually began to hide their identities and integrated into the human world. Humans and demons began to combine, and the half-demon was born, but it became a great complement to the demon clan. The demon hunter even scorned the appearance of the half-demon, and a battle for survival between demons and humans began.
Purpose: Abandon the idea of seeking common ground while reserving differences, they should have a place in the world when they are born