Aion is the god of Atreia. He created the world itself, as well as the Humans and the Drakan that occupied it. The Drakan were to be the protectors of Atreia and of their Human counterparts within the world. Inside the world of Atreia, though no star could reach, the light of Aion kept the world bright.
When the Drakan turned, using their power to try to take over the world of Atreia, Aion saw fit to grant certain Humans god-like powers. These beings became known as Daevas, and it was up to them to save the world of Atreia.