Aeris

[Amaterasu]

What I am telling you, is that, you may not indicate that Omni gave you a body. You can only assume that he did. No where in any story you write should you ever 'prove' that Omni gave you the body. Just have your character assume he did and go on about your business. Is this fine with you?

Oh right, I get it now. Then yes - Aeris has no idea why she has the body, whether it was Omni putting her into one or because it's some law of nature in the Omniverse. She might question where she got it from but never would be certain.
I'll change my story accordingly after this post ^^