I think somehow the Jun and the Myung from the ancient setting paralel world have traveled to the actual world and they will meet the "other's self", not quite sure how to express this doe.
At this point of the manhwa, I can definetly say that the plot is one of the best ( if not the best one ) plots I've ever read, all of the emotions, characters, stories, dialogues, everything is completely amazing, nothing else to say.
It sucks to be a candle holder