A hollow world orbiting just outside the accretion disk of a white hole above the Ambrosia's galactic disk and is home to the vibrant and artistic Iylvena species.
From orbit, Koitrelion appears as a translucent globe, its icy surface shining in the light from the white hole.
The surface is composed of ice, and is for the most part, perfectly smooth with the exception of small hills and loose chunks of ice dotted about, here and there. The shell of ice is around 2km thick and is extremely sturdy being able to withstand any small meteor strikes. Entrances to the interior can be found in some areas of the surface, utilizing large metallic shutters to prevent the internal atmosphere from escaping. Koitrelion's interior contains a rudimentary atmosphere with large chunks of ice floating around, acting as habitats for the Iylvena.
These habitats range from the size of an ordinary iceberg to the size of small islands. The larger chunks are connected to metallic tethers clinging from the ceiling in order to prevent them from colliding with others. The Iylvena inhabit small communities embedded within them, with small garden areas dotted about to keep their mental wellbeing in check.
Aside from the Iylvena themselves, a handful of other specimens live within Koitrelion being:
Large, whale-like organisms with vertical mouths and four eyes, swimming around the planet’s interior. They are 150-170ft long when fully grown and tend to feed on airborne plankton-like organisms. Karehu are very important to the Iylvena, having been been worshipped on their ancient homeworld of Klo-ko-reha and still domesticating them in the present, mostly for transportation or in rare cases, companionship. Due to their value and high importance in throughout many of the Iylvena’s cultures, hunting/poaching them is strictly outlawed and is punishable by death if done so. Alas, this unfortunately hasn’t stopped a few rogue Iylvena communities from partaking in this act though.
Behaviour: The Karehu are very docile creatures, making domestication fairly easy for the most part. Their reproduction is sexual, and will generally give birth to around 4-5 offspring, swimming around in familial pods until maturity. At maturity the offspring eventually depart from their parents to live a solitary life of their own. The parents usually separate after this as well, the “father” leaving to look for another mate while the “mother” is left alone as Karehu can only give birth once in their life. Nevertheless, parents staying together after their offspring have all separated is not unheard of.
How it was created remains unknown for the most part although it is believed that the elusive Mystara was involved.