I like it pretty well. I'm not really paying attention to the story, but the battle system is fun. I'd compare it to maybe Suikoden or FF Tactics. You form unions using different battle formations. It's turn-based using quick time events (kind of like in Legend of Dragoon) to execute critical triggers.
Your hp and ap are restored after every battle to allow for higher battle chains, so that's awesome. I chained like 200 enemies once. Downsides are that loading before and after battles take a while, as can the battles themselves. The textures load in slowly, but that could just be my machine.