Demonic Spirit

On this land, there are two opposing species, humans and spirits. Spirits feed on humans, while humans need to resist the invasion of spirits. The protagonist of the story is both the spirit of origin "Devil" and a human being. There are many mysteries in this seemingly ordinary boy. March 20, 2030 Do you want to live, human being? [Then make a contract with me. This is where the story of man and spirit unfolds.