This is an absolutely great demo! Enjoyed it all the way through.
However, at the scene where the main character is sleeping under a blanket in front of the big Rose Door, right after the boss fight, the game crashes (see screenshot). Everytime I get to that scene the game crashes, but not always at the same time. I'm playing on Demo mode and through the itch.io desktop app, if that helps.
Other than that, I encountered no bugs and I definitely intend to donate to the kickstarter when it comes out.