"See that tree over there? The one with the kind, old face; the one tending it saplings - yeah, that one."
"Just cus, man. Just, like, kill it and stuff. Go on...!"
That's what every MMO is like. You go out into the world and every single moving creature is hungry and angry and is out there to kill you. Oddly enough, these bloodthirsty creatures of destruction are more often than not just wandering about a field, minding their own business. There is often little back story to who they are, why they are there or what they are up to.
Aion is a prime culprit of this sloppy world-creation. Take, for example, the Shugo:
I stood and looked at him and and thought: "what are you?" Everyone else seemed to be jogging past totally unawares. I had to educate them: "WHAT IS THIS?! Can anyone else see this?!"
Was no one bothered that there was a ferret-man standing in the middle of town? Through the entirety of the game there was very little explanation as to who they were and where they had come from (there's even a high level dungeon where they are dressed as pirates, for christ sakes!).