SPOILERS for those that havntbeaten kh1 ** this may seem farfetched but do any of u think that xion is the nobody of kairi AND sora? now bear with me...think about it, kairis heart was in sora he released it by turning himself into a heartless so technically they were one so becuz of that xion was created...i mean she has a keyblade but is a girl
ok you didnt explain where namine came from if your going to explain xion then you need to explain namine
ansem report(Namine’ is a Nobody, created when a young girl’s heart left her body. Yet she had no corresponding Heartless.Kairi produced no Heartless, and instead of vanishing, her body remained in the realm of light.) this could be xion
ansem report(I have arrived at a hypothesis. I believe that Namine’ was born as a special type of Nobody when Sora attacked himself with the Keyblade, causing his and Kairi’s hearts to leave their bodies simultaneously. Namine’ emerged as Kairi’s Nobody… but the body and soul necessary to exist as a Nobody belonged to Sora.)
or the hold thing vice verso
**SPOILERS** in kh2 to the only reason she even got her keyblade is cuz riku gave it to her...i know im mostlikely wrong but tell me wut u think
next you said that riku gave xion a keyblade when xion was most likely created at the end of Kh 1