There's something that I still don't understand. If The World That Never Was wasn't one of the seven worlds in the dream world, then how were Sora and Riku there in their dream forms? I know Sora was brought there and buried in sleep/dreams worse than Inception, but was this taking place in the same TWTNW as in Kingdom Hearts II? If so, then why did Young Xehanort and Ansem bring them all together in one place, just to get Sora, and then return to their original times? Do they plan to alter history completely, or will everything be the same as it already is?
Time Corruption
There's something that I still don't understand. If The World That Never Was wasn't one of the seven worlds in the dream world, then how were Sora and Riku there in their dream forms? I know Sora was brought there and buried in sleep/dreams worse than Inception, but was this taking place in the same TWTNW as in Kingdom Hearts II? If so, then why did Young Xehanort and Ansem bring them all together in one place, just to get Sora, and then return to their original times? Do they plan to alter history completely, or will everything be the same as it already is?