So what I'm getting out of this (and a few other threads) is that the dark side was a unique thing that only happened to the first dark knight. Maybe it was genetics or something but whatever the case, no one else would be able to naturally develop a dark side and would have to pull it out manually via soul stone or being taught by another dark knight. On top of that, the dark knight style of magic would be unique to Eorzea and would not be seen anywhere else in the world because the only way to gain those powers is to be taught by another dark knight, and to be taught you would have to join their order of batmen, which would likely root you in Ishgard and the surrounding areas.
Just trying to clarify for my own sake so I know if some retconning needs to be done on my part.
Just trying to clarify for my own sake so I know if some retconning needs to be done on my part.