aqua turned ven into castle oblivion after his and soras hearts were connected, so then when sora later returned to castle oblivion his mind was messed with by the help of namine (kairis nobody who he created when he released her heart) . then they put him to sleep and started rebuilding his memories.roxas was also created with a complete replica of twilight town but before this hapened he was forced into the organization. xemnas xigbar and the other people had created to be a puppet of soras memories .roxas being part of sora and ventus at the same time would probably already be able to wield 2 keyblades i would think. and xion was just merely a replica of sora that to roxas was aperantly seen as sora. thats what i think xion was just puppet to reclaim soras memories and when she was defeated the memories just went back to diz' computer thing. but where does ansem fit into all this??
