
Originally Posted by
Wolf Kanno
I've always gotten the impression that Roxas knew absolutely nothing of his former life and joined OXIII cause Xemnas probably promised him they would help him discover the truth about himself. I believe DiZ even mentions the fact that Roxas and Namine were unique Nobodies, not only because of their abilities but also because they are the only high level Nobodies who cannot remember their former lives.
Its obvious that Roxas was very important to the Order. I'm pretty sure that if Roxas knew about Sora completely, their was the strong possibility that he would ditch the Order cause somehow I doubt he would be able to gain a heart when it was still walking around fine as day. Thus OXIII's plans would not really help him. I'm certain that the majority of 358/2's plot will focus on him being tricked to join the OXIII, and the conspiracy by Xemnas to keep him in the dark.