I really like this game and I believe that it has a lot of potential! I enjoyed the art-style and its little details as well! I have the feeling that this game will get creepy later on, judging by the very specific words "the FIRST knot in the middle of Mileo's tale". I'm really excited for future demos and possibly a full game! My only complaints are that the platforming feels a bit stiff. It would feel more comfortable controlling Mileo if there was perhaps a bit of momentum when he moves. Not "sliding on ice" momentum, but just a little bit of momentum to make his movement feel more natural to work with.
By the way, if you have an official discord server for this game, I'd be more than happy to join it!