"Riku finds her first, but she is in a comatose state, with a vacant, lifeless expression and a limp body. She'd lost her heart and because of her Princess status, her body remained untouched by the darkness that usually produced a Heartless."
I found this on the KH wikipedia website.
With this being said, I think that Xion could be Kairis' nobody. When kairi lost her heart(however she did), that's when Xion was created. The reason that Xion doesn't remember her past life as a somebody is because Kairi doesn't remember her life in the past.
Also, Kairi weilds her own keyblade, which could explain the keyblade Xion weilds.
This is just a though I had like 7 minutes ago, so please comment.
I found this on the KH wikipedia website.
With this being said, I think that Xion could be Kairis' nobody. When kairi lost her heart(however she did), that's when Xion was created. The reason that Xion doesn't remember her past life as a somebody is because Kairi doesn't remember her life in the past.
Also, Kairi weilds her own keyblade, which could explain the keyblade Xion weilds.
This is just a though I had like 7 minutes ago, so please comment.