Not bad.
The game has a lot of charm, and the art's quality is very high.
It certainly tries to be different, considering the unusual combat and the dancing minigame, both of which I've quite enjoyed, even if the inputs in combat aren't as fluid as I'd like (it seemed to be mostly restricted to the quarter-circle moves too, I wonder why, the double taps were responsive enough)
The text sure could use some proofreading, besides typo's I've encountered plenty of instances of things like "where" used instead of "were", and sure, it's not the worst I've seen, but it leaves a bad impression nonetheless. Also, some word wrapping issues, one of the early tutorials just floats off the screen for example.
I didn't encounter any actual bugs or glitches during the testing, though looking at the comments it seems the others weren't so lucky.
The story setup seems pretty basic, but I've no problem with that. As long as it'll stay well put together, I don't care if it's full of tropes or generic. All I'm asking for is not shoveling pages of uninteresting writing in my face, if the story's bland just keep it to the minimum, don't get in the way of the gameplay, and I'll be happy enough. So far the game seems to be on the right track in this regard, we'll see what the future holds.
There wasn't a whole lot to see here, but what was here is genuinely decent. There's certainly a fair bit of promise here.
I wish the demo wasn't this fucking huge in size, given how little there was to explore, but that's pretty much my only real complaint.
I was thinking about writing a review, but really the only thing that can be assessed right now is "potential", since the amount of available content is so tiny.