I was thinking the other day on how is Sora going to get Ventus to wake up. And it a theory popped in my head. What if the key for Sora to awaken Ventus is through Roxas and Xion? you are probably wondering how but here is what I'm thinking. What Roxas and Xion both hold a part of Ventus. Roxas contains Ventus's heart while Xion holds Ventus's memories (which would explain why she took the form of him). The thing would be that neither one knows it but Sora would.
So if my theory is correct in KH3 Sora would have to find a way to get Roxas and Xion back first so that he can awaken Ventus.
So if my theory is correct in KH3 Sora would have to find a way to get Roxas and Xion back first so that he can awaken Ventus.