Not only had Little Bone not seen an Elf, but for tens of thousands of years, it hadn't encountered any intelligent creatures, nor even large animals.
Negris knew all too well how this desert had formed – it was created by Ange using Chaos Mist, an isolated and barren world cut off from the outside.
Then Ange used various fertilizers, bird droppings, peat, and the like for local improvements, planted some trees, and used their life force to stimulate the growth of a World Tree, continually refining the entire desert.
But after all, with such limited time, Ange couldn't manage to establish a complete food chain, so he had Little Bone plant trees. Hence, apart from trees, there were only some small animals and insects here, no large creatures or intelligent beings.