Ah, finally got to play the demo till the end! It's really a great game!
All the characters I've met so far are interesting, though I'm sad I couldn't meet more of the main cast.
The art and music are gorgeous. I'm just frustrated because the game runs slow as hell and lags all the time - it's a bit hard to play because of that. But well, other than that and the need for some proofreading, it's really awesome.