Cool puzzle game, very charming and quite polished for a jam game. The character designs and the dialog were fun.
The puzzles had a good difficulty and sure were headscratchers at times. However, it wasn't always clear what puzzle element had which effect on the game, which created a rather tedious play of switching between all of your characters and seeing how everything interacts, often redoing puzzles multiple times. Especially Level 3 had this issue in my opinion.
At some point, I had a bug with music overlapping, which is a shame, because the songs are beautiful.
Otherwise, good puzzle game with stellar presentation. Bravo you four.