There are nine realms of genius, and four races of humans, monsters, spirits and demons coexist. For hundreds of millions of years, the four tribes have recuperated and recuperated, and all life in the world has prospered. Hundreds of millions of years later, the demons want to dominate the nine realms, and the three races of humans, demons and spirits join forces to fight against the demons. The world is in chaos and all life is in ruins...
Intention: I haven't thought about it yet