A reflection of the mortal world is the Otherworld. The Otherworld is composed of the Faerie, Hell, Heaven, The Elemental Chaos and The Underworld which are all surrounded by the Astral Sea which again is encompassed by the Ethereal Nothingness.
Noone knows how the Otherworld came to be. Sunites and some Moonites claim that the Twins created it to test their mortal creations, but other Moonites claim that it was Torax, that secretly created them. Followers of the Primal Spirits say that the Otherworld has always been there as a part of Gemnos, while Zeranites claim it was there before Gemnos, and that Zeranon created Gemnos for his races. Followers of Zarus do not care how it came to be, but think all links to it should be severed.