There is an ancient country in the wilds all over the world, called Cilidu. It is a place where gods will not descend, immortals will not step on it, and all monsters will bow their heads. This is because it is guarded by evil spirits that threaten the six realms.
Millions of years ago, in the last battle between the demons, the army of the demon world was defeated. The great demon king "Eater" who commanded the demon world was subdued by the gods and fell to the mortal world. His body and soul were destroyed.
The demon king was knocked down in Silido, and when the demon's ashes were annihilated, all the demonic energy in his body collapsed. When the demons absorbed his evil energy, they could greatly increase their cultivation.
Intention: When the three souls and the seven souls are gone, only the last one remains. After being the devil for a long time, will he still remember how to be a human being?