#so the shorter pointy ear the fur and the tall gnome looking humans called my attention

[dunmeshistash]

Something that completely flew over my head (I am not very observant), I was rereading chapter 87: Winged Lion II to re-check some things about dungeons and I just now realized the ancient humans weren't from the current races we know.

They seem to have characteristics from several of the human races together, and some of them even seem to have fur (like demi-humans?)

It's even implied that the lifespan differences and physical differences (the two asking for muscles and using magic in the background) were due to the Demon granting wishes

I did notice this part but I didn't realize this was probably part of the source of the race differences rather than the races already being different and wishing for different things.

So at some point the human races might have been even more closely related, before a powerful being influenced their evolution.