In a world where human beings, demons, and enigmatic creatures coexist, each species has a unique method for developing their power. The humans have access to the mysterious qi, the demons cultivate their physical form, and the enigmatic beasts hone their soul perception. Tales speak of demon kings dwelling in the heart of a never-ending rainforest, possessing immeasurable strength. These demon kings have exceptional physical bodies, possess skills in illusions or magic, or even abilities to perceive things from great distances. Although these demon kings rarely visit the human world, when they do, they take on a human form to blend in with society and advance even further.
