Demon Body

The gray fog fills the air, and monsters are always present. Lin Xiao traveled through time and came to this world. One day he discovered that the world was different from what was described in the textbook. It turns out that the place where I am now is ruled by monsters, and humans are just kept in the dark. Outside the city is gray fog. As Lin Xiao, who had awakened his system, continued to grow stronger, he discovered a more terrifying problem. "I'm not human? Then what am I?"