Prove it? no one had ther hearts put away Explain why sora had Kairis heart
Because Kairi's heart migrated to Sora's body because of the overwhelming situations that occured that night.
explain how terras gonna go with MX cause the only way that people can come together and from what ive seen in KH is through there hearts
I'm not Nomura, plus, that's just a theory, who's to say that's how it will really happen.
We don't know if he came from MX.
how did riku and Xehanort come together
Xehanort migrated into Riku's body because Riku let him in. Xehanort pushed Riku's heart out sending it to KH. Xehanort changed Riku's appearance to suit his own. Sora kills Xehanort, but when Riku's heart goes back into his own body, some of Xehanort's darkness is still in there.
how did Roxas and ven look alike its all pointing two 2 possible ways,
T A V put there hearts in S R K thats why there hearts are strong enough to weild keyblades.
OR
T A V just die and the keyblade leaves them
PS if that did happen i wouldnt never want too play the game again
Kairi is weak. She is nothing. You only need a strong heart to wield a keyblade. She has a strong heart because she is PoH.
Terra chose Riku to be the next master. It's that simple, he didn't extract his heart and throw it into Riku or what have you.
Proof that the hearts aren't in other people:
When Sora stabbed himself, if he had another heart inside of him besides Kairi's or his own, he would have made
3 Nobodies, not 2.