Though Raen moreso come from Doma -- an island off the shore of Othard -- it is plausible (especially considering some Xaela tribe descriptions) that one would settle on the coast of Othard (in a village or otherwise). There's no reason that this isn't a thing. I have a doman lore blog that you can find here:Â http://doma-ffxiv.tumblr.com/tagged/lore
As others have pointed out, Arcanima is fairly precise, and you need quite the mind to grasp it. However, it was created by a bunch of math nerds sitting around a table in the South Seas. We know that Doma has magic, we know that there are pretty much scholars everywhere, there's no reason that Arcanists and the Arcane couldn't have been in Doma/Othard, too.Â
The likelihood of "discovering" something similar? Eh. People would already likely know it as Arcanima, it might even be trained there, so it's more plausible she was taught by just another Arcanist in Othard.Â
As others have pointed out, Arcanima is fairly precise, and you need quite the mind to grasp it. However, it was created by a bunch of math nerds sitting around a table in the South Seas. We know that Doma has magic, we know that there are pretty much scholars everywhere, there's no reason that Arcanists and the Arcane couldn't have been in Doma/Othard, too.Â
The likelihood of "discovering" something similar? Eh. People would already likely know it as Arcanima, it might even be trained there, so it's more plausible she was taught by just another Arcanist in Othard.Â
