Quote Originally Posted by Vexander View Post
Theories and speculation are fun, but I'm rather eager to learn what Red Mage's actual Lore will be.
We have some new lore, from the updated Stormblood page!

On the eastern edge of Abalathia's Spine lies the mountainous region of Gyr Abania.

It is in these elevated lands that people took shelter, when a burning star guided them away from the Sixth Umbral Calamity's treacherous floodwaters. The survivors gathered from near and far, and amongst them were refugees of the sorcerous cities of Mhach and Amdapor.

These sworn enemies buried their history for the sake of the future, and cast aside their vestments of black and white. Upon the remnants of their arts a new discipline was built, and the first red mages stepped forward with rapiers in hand to fight back against the rising tides of destruction.
So, it seems that RDM are not Sharlayan in origin, but from an alliance of Mhachi and Amdapoori refugees. Its origins lie with White and Black magic.