Gonna be hard but it is possible using Dragon Quest X's idea where you start as a human race you do character make for that human race then as story progresses something evil happens and you get sent to another world where you take a soul of another beastmen race and your journey starts again there to find a way to return to human. You get to go through 2nd character make at this point.

FFXIV style - You got Eorzea and something happens like the Meteor project that changes balance and now you got gate opened to Ivalice upon entering your soul takes over a race living in Ivalice, could go same for Vana'diel using this same method