I had a pretty nice story for the origin of primordials, demons, and fey and the different realms of reality in Kaendor three months back, but since then I’ve once again changed my stance on the inclusion of demons. There are a few cool ideas I have for demons, but overall they just don’t have the kind of integration into the larger existing worldbuilding that primordials and fey have. I also feel that having three groups of supernatural beings is diluting the distinguishing boundaries between them and unloads too many overlapping concepts on players who are meant to figure things out largely for themselves. Demons are also heavily associated with Evil and Hell, which are both concepts that don’t really appear in the big picture of Kaendor.
So for the third time now, I believe, I decided that the setting should not have demons at all. Most of the ideas I have for them can quite well be given to either the primordials or the fey, and the remaining ones really don’t need to be jammed into a setting that does not actually need them. But that also means that the old creation story no longer makes any sense. Here’s a new one I also really like.
In the primordial age, the world was all water and darkness. It was the world of the Primordials, who ruled the lightless depths for uncountable aeons. This changed with the arrivial of fire. It is not known how fire came to be, but stars appeared in the eternal blackness of the Void and drove back the darkness around them. Their light and warmth drove the Primordials into the deepest seas and lowest reaches of the earth, or into the eternal emptiness of the void. Where the light of the stars reached the surface of the earth and the sea, its energy brought forth the first elemental spirits, as it did those of the air.
When the darkness was driven away by the radiance of the stars, shards of the sun fell down onto the earth and burried themselves many miles deep into the ground. From these shards emanate the streams of lava that sometimes rise back to the surface, and they gave life to all the fire elementals that roam the world, and many of the spirits of the deeper earth as well. The smallest of these sun shards have cooled down in the aeons that have passed since these earliest days, and have solidified into veins of copper.
The elementals were the first of a new form of life that came to spread throughout the lands touched by the lights of the stars. From them came many other spirits, as well as the ancestors of the earliest plants and animals.