A cursed ghost, a cultivator, and a soul painting pen that can enter dreams. For their own purposes, they embarked on a journey of dealing with demons.
Right and wrong are not so clear in the world. Demons do not only harm people. Some live for love, some die for love, some are willing to be replaced, some turn against each other, and some are obsessed with it...
There shouldn't be any disputes in the six realms, but who is willing to stick to this rule?