Sky of Ice and Fire

There are two realms of Yin and Yang in the world. There are four evil creatures in the underworld called soul eaters, soul hookers, and soul breakers. They are formed by the four evils produced by humans: anger, desire, greed, and evil. In the Yang Realm, which is opposite to the Yin Realm, a mysterious profession called Onmyoji, or Yang Realm Law Enforcer for short, appeared. Onmyojis were born to uproot soul eaters and evil spirits lingering in the Yang Realm. Above the Onmyoji is the Spirit One. It is said that the Spirit One has the power to fly into the sky and escape from the earth. He can turn curses into spirits and travel tens of thousands of miles in one breath. Everyone in this world aims to become a spiritual person.