JKSManga
I'm going fully down the rabbit hole here, the Blade Family and the old Big 3 are all connected to the vamps, the Blades' being the "original" originals that eventually branched out to form the other originals. This could mean that the demon class beast "belongs" to the 1st head of that beast tamer human clan who, under the guidance of the Blades', was working with 1st king (either before or after he passed up the throne) to create the dalki as a human substitute. This was done willingly by the humans as a way to protect themselves from the vampires. The Dalki, however, learned of this and revolted against the Vamps escaping in the process while also declaring war on the humans as they are the weaker species and should be the ones fed like cattle to the vamps. Thus the war started but for a vastly different reason than what is given in history, obviously a cover up by the key Original Families that were involved in the process.
sorry addition to my previous post Quinn system inspect can only tell him what something is that he's seen before if I remember correctly so does that mean someone updated after the dalki were created or did his system lie? and he actually knew about it because if you remember his system inspected it successfully when he was on that desert planet much eairler