At the beginning of the world, the God of Creation created this world, but not long after, the God of Creation disappeared, and instead there were two more gods.
The world calls them the God of Light and the God of Darkness. At first, the two gods coexisted peacefully, but soon the two gods of light and darkness fought for dominance. Finally, they decided to separate their daily time at 8 o'clock and not interfere with each other from then on.
But for some unknown reason, after the two gods died, their power spread across the world, causing a small number of creatures to mutate. People called the power gained from the mutation as power. There were two families closest to the place where the gods died.
They have obtained the purest power of light and darkness, and their power and power far exceed that of others.
Concept: human nature