Realms can be described as pockets of reality, fitted onto a circular wheel. There are two wheels, one for the overworld’s realms of life, and another for the underworld’s realms of the afterlife. Realms on each wheel fit snuggly neighboring each other in pie-slice slots, but never collide thanks to the fabric of reality. Each wheel's pace dictates the speed at which time passes in all realms of the overworld or underworld. The deities can technically change a wheel’s pace, but doing so would cause extraordinary chaos. The overworld wheel lies above the underworld wheel, with Faia in between as an exception to typical realms. The empty space between and outside realms is referred to as ‘void’ by the deities, and unknown to mortals.

To prevent blocking spirits’ passage to the afterlife from the overworld wheel, there is a large hole in the center of Faia. The deities have separated this hole by surrounding it with an enormous circular mountain range, too high for even airships to cross. If a Faian were to cross it, they would simply see a lagoon in the center of the mountains. They might be able to see the spirit flow, but this would require said Faian to be experienced in magic, and for the spirit flow to be unusually busy. If a Faian were to climb down from the mountains and approach the lagoon, they would be met by an invisible wall. This wall is what prevents Faians from falling into the void. It is what deities call the fabric of reality.

The fabric of reality is invisible to the mortal eye, and transparent in deities’ eyes. It defines the physical boundaries of realms. In other words, it defines the end of the world. Faia is the only flat realm in the universe, and if any Faian were to reach the edge, this fabric would prevent them from falling off. Instead, they would meet that same invisible wall around the hole. To make the borders of realms less glaringly obvious to its inhabitants, the deities always set illusions on the interior fabric.

The deities can manipulate the fabric of realities in several ways to alter, create, and destroy realms. For example to create a new realm, the deities will stretch the fabric to make a new pocket, where they insert the new world. To destroy a realm, the deities will simply tighten the fabric around said realm to crush it. If you were an inhabitant in a realm actively being destroyed, it would seem as if the sky was closing in on the ground, and the ground was closing in on itself. Certainly not an enjoyable experience.