[...] Way back when, demons and other pure evil things were on the Earth. Magic too. Then, when animals started poppin' up - and "mages" and "lora...-somethings" too - anyway. Demons left, going to other "dimensions" [It's clear from how she's saying it, she doesn't know what dimensions, mages, or whatever lora- was going to be are] where they felt more comfy. Few of 'em stayed though - some slept, some hid, some bred in with humans or animals 'pparently... and then some infected.

Just what I was told. He didn't know where they start either, but lurks are a plague. Demons infected humans - parasite like - and then they pop up. So yeah, demons. Weak ones, sorta hard to think of 'em being the same.