When Xemnas asks him how it is possible, he says something like "i did it like you, most of the Organisation send their hearts from the past" then he asks how he knows it, and Roxas replies like "i got help from some people you know, and some others too" The ppl he knows being Ansem the Wise, Zexion, possibly Vexen too I am also still curious if MoM created the first Noname, why do all Vessels turn into Nonames before changing into the X-Blade What if Noname is actually responsible for nortification, the yellow eyes etc. Maybe Noname itself hosts some pure darkness that affects the wielder if he gives in to darkness?