After the Heavenly Pantheon was created there was an ambitious god who didn't wish to share power, and so he sought other sources of power. Maddened by his ambitions he created Stygia a nightmarish realm of chaos that countered the peace of Elysia, and within this realm he created daemons, along with the original Nine Devils. It wasn't too long however until his twisted creations overcame him, and locked him away in the frozen realm of Cania. His name is forever to be considered taboo among gods, devils, and mortals.
The Nine Devils rule over Stygia, and seek nothing more than to conquer Elysia and the gods. The almost eternal war that has been waged between the devils and the angels is known through out the universe as the Great Astral War.
It is split up into thousands of many layers which form a chaotic maze, although the largest of these layers are controlled by the Nine Devils.
The Layers of Stygia