Hmm...
OK, so it's another "FFVI continuation" thingy. Well, first thing, I absolutely LOATHE Kefka as a villain. He's almost as bad as Seymour in my opinion, and Seymour was a poor villain at best. I'd strongly recommend having a new villain instead of Kefka. Also, it jumps around quite a bit in terms of story. It's better to focus on a few characters rather than trying to fit everyone in.
Second, music-wise, they were clear and all, but I'd really recommend using music from other RPGs. If you go to Blue Laguna's site and look in the mp3 section at the Star Ocean 3, Chrono Cross, Shadow Hearts and Suikoden sections you'll find some good music that should fit the scene pretty well. People may complain about it "not being pure" or some such crap, but in the long run it'll help you stand out.
Anyway, onto what I liked. Animation-wise, it was pretty good. No lag, the walking clips were nicely done and the textboxes were good. The camera angles were great too, I'd keep putting those to use. I also liked the fight with Shadow and the soldiers. Turn-based just doesn't really work unless you're mocking it in an animation in my opinion. I'd recommend using a radial gradient for the blood instead of solid bright red (Window > Colour Mixer and you'll see the option). For "advance the text" buttons (I noticed you mentioned you wanted to learn these) you just need to make the textbox into a button, put a stop command in on the keyframe with the text and then a "root play" command on the box/button itself (click on it, then put the command in). Some people like to go at their own pace I guess but waiting around doesn't bother me so much.
Anyway, sorry if I came across a bit harsh, and I hope I've helped out a bit. You have potential, so keep at it.