Resting at the center of the cosmos, Esole is this universe’s sun. In this case, the sun’s brightness derives from the refractions of the millions of crystals that make up its surface, breaking through the minor sphere of fire encircling it.
The planet's surface is hard and crystalline, so Esolans tend to live underground, in the earthier caves (though these are still fraught with crystals). The surface being crystalline, the light from the ring of fire refracts down into the caves, creating a near-constant, pulsating, multicolored light in which the Esolans live.

Larger than the other planets in the Cosmos- it is their sun.

Hard, crystalline, and horrifically bright. Resting at the center of the cosmos, Esole is this universe’s sun. In this case, the sun’s brightness derives from the refractions of the millions of crystals that make up its surface, breaking through the minor sphere of fire encircling it.
The surface of the planet hard and crystalline, so the Esolans tend to live underground, in the earthier caves (though these are still fraught with crystals).

Esole is enshrouded in a ring of fire that refracts back on the crystals, resulting in its brightness.

It is eternally day, bright even underground, though the light is filtered and multicolored and dimmer the deeper one ventures

There is no night.

time is determined in spans of years, by the positions of the planets glinting in the distant cosmos as Esole rotates in the center of it all.

n/a

The sky is always nearly unbearably bright, the ground of crystals almost more so and only making it seem more unliveable

No; it is its own sun

None of its own, but Reigín and The Middle Moon hang some two spheres away.

No orbit, as the center of the system.

None, because of the brightness of the Fire around it

Naming Conventions:
- I'm thinking about virtue names being a staple of the Esolans, especially amongst certain classes