Great job on the visuals, the main character is very cute. The characters and environment work well together, though it was a little jarring seeing the castle(?) floating up in the air when I looked out of a window.
Mashing a single, slow attack over and over got boring really quickly though, maybe you could implement a 3 hit combo? Or increase the amount of damage the player deals. Maybe spraying enemies before attacking them could grant a significant damage buff. If it already functions like that, I honestly didn't notice a difference.