Just played through the demo and really enjoyed it. I love the aesthetic and characters so far, and am interested in seeing where the story will go.
Want to say, though, that I did encounter a bug during my playthrough that made the platforming a lot more difficult than it needed to be:
For some reason, I wasn't able to jump while holding the 'down' and 'right' keys at the same time. Jumping worked fine for every other arrow key combo, but for those particular keys simultaneously, the space bar would become unresponsive. I was able to work around this somewhat by releasing those keys immediately before hitting the space bar, but this was difficult to work with. This issue is especially frustrating as down-right is the most common direction in which platforming occurs.
Still all-in-all a promising game that I'd like to see more of.