they could just make it like estinien introduction right? if you never play/finish drg class quest, estinien will give you a brief self introduction and what drg is. if you already drg he will say something like "oh its you" or something like that, i forgot.

i can see its working on fray case too, if you finish drk 50 quest he will go like "we meet again" something like that, if our avatar never touch drk fray just need to do brief introduction like estinien case, our avatar transported to "black screen" dimension and fray appear saying stuff like iam your opposite or whatsnot and the story continue.

it just a theory that my guild talk about, but i think its good enough to put it in this thread.