I just realized something... if Aqua is born from Nohr but abducted by Hoshido, then that contradicts my theory that Aqua is really some thousand year-old water dragon since the ancient times of Hoshido and Nohr and is using Kamui to destroy both nations so she can rid the world of war and conquer hatred.
I refuse for this game to take the boring route and make St. Garon the overall main antagonist. Aqua being the main antagonist would make a much more interesting and out there scenario. Now, I just... I just have to revise my theory.
Now, let's see... Aqua can still use Kamui to wipe out Hoshido and Nohr and it can still be her growing sick and tired of the eternal blood feud between the two nations. Just, she wasn't there at the start. It was Aqua's ancestor that had to watch over the endless fighting. Much better. It's foolproof! What could possibly go wrong with my theory?