It's a damn great game. My only advice is that you should be patient, as it's probably one of the slowest-paced JRPGs ever made. The fact that you're already liking it is good, since even the prologue is slow.
It also had some outstanding writting in the form of One Thousand Year of Dreams or whatever it's called, so I really encourage you to go look for those, they're fantastic reads. And the music is great, too, so it'll be a joy from start to finish.
Here's a gameplay tip (not sure where you are so don't read if you don't want to):
Never forget to have your immortals sucking like leeches from mortals' skills, and from items' skills. Seriously, always have them sucking AP. It'll break the game easily in your balance but then you'll never have to worry about losing a combat ever again.