I like the artstyle and the narrative of this game! I feel like the librarian's movement felt unresponsive, which coupled with the large hitbox of the bookcases made it feel awkward to navigate the game. I do like the puzzles, but I think for the first one, giving more ways to define where the front and back of the library would greatly help as I ended up circling around the perimeter bookcases. Also, for finding the piano keys, I almost missed the black key because it blended too much with the backgrounds. You could definitely place it on something bright so that it contrasts and sticks out to the player. Keep up the good work!