God of War: Inspector from Another World

As the 187th generation successor of Taigong Order. An accident caused "Daoran" to travel to a different world. The sea of corpses in Futu Mountain, the dancing demons in Ten Thousand Monster Mountain, Thousand-year-old fox demons and gods in the spiritual world, what caused the war between humans and demons. Who is behind this and who are these conspiracies against? All of this starts with a disappearance case.