well, this is my theory wich is mainly about xion and how she came to be. i belive that she was made by the memories that sora and kairi had and leaked out when sora was sleeping. eventually these memories came together and made xion, thus why she looks like kh1 kairi. also i think that ds might be xheanort instead of terra and is some how related to ven, aqua, and terra (before they were against eachother.) sort of like if he was an apprentice with aqua, terra, and, ven but went to the dark side.
thanks for listening to my theory and i am sorry if the above is outdated.thanks.
thanks for listening to my theory and i am sorry if the above is outdated.thanks.