Managed to complete the game! It's a very cute demo and a really fun puzzle game! It's a cute premise to begin with, and the sense of humor slowly emerges over time as you realize just how mean these fairies can be to each other :y There was a good build up of difficulty in the first world while you teach the basic mechanics, and the information slides do a good job of getting you thinking in the right direction regarding solution options early on. The puzzles near the end definitely got a lot trickier, but I did manage to solve them on my own with some creative thinking on my part.
For anyone in the future who might turn to the comments for any reason: there are 2 worlds at the moment, there is a save feature implemented since that original comment, and you can use the escape key at any time during the level to restart/leave to the main menu/overworld.
While the red fairies can cancel their throws, it would be nice if there was a key to put down the fairy entirely (press x twice in a row?). I feel like there could be clearer way to switch between fairies; when they stand close to one another it can be hard to tell which fairy you have selected, and since the x key is so close to the action key z, it's easy to end up doing an action when I meant to switch, and vice versa. There's been a few times where I pressed the enter key out of habit, and while that seems to work on the 'continue' button screens, there's not any other functions tied into the enter button as far as I'm aware. Maybe it would make more sense to have the action button tied in with the enter key? I also think if the character highlight ring changed depending on fairy type (so green when with the blue fairy, pink when with the red fairy), that could possibly help address the situation.
Hope some of this managed to be of help! I'm very curious to see what the rest of the game might end up looking like!