Board Thread:Questions and Answers/@comment-85.5.230.120-20160821080204/@comment-66.166.29.90-20160822192047

Crimera is correct, but you should also know that XBlaze Code Embryo and XBlaze Lost Memories (Shin Yokozaki) exist outside of the main BlazBlue timeline while Bloodedge Experience is in another one. In Lost Memories Me (or Nine rather) explains to Nobody that the her world (BlazBlue) and Es' world (XBlaze) shared one single timeline up to a certain point where it split, creating two different timelines. In Bloodedge Experience's case, it's because in Naoto's Act 3, Relius said the Naoto he knew in the main BlazBlue world/timeline died and that Naoto is saying things Relius didn't experience back then like Hazama being their when he shouldn't exist yet. So, while XBlaze (Es' world) and Bloodedge Experience (Naoto's world) are canon, they exist on two seperate timelines outside of the main BlazBlue timeline. That means there are three timeline rails to follow, and they breifly converge during Central Fiction, hence why Naoto and Es are there. Hope that helps and clarifies things for you.