Okey this was soooo good! I loved it, the changing of the character with the fact that he then walked on the path which the other one left, was such a good idea!
It was fun and cute and just overall great and just realised who the characters are XD
Only feedback was the time I got stuck and didn't really know what to do, I forgot that it had the restart button, so had to go back and see what it was, and maybe have like a confirmation are you sure you want to restart (since if it would be a longer level and you pressed it by mistake... :D Furious)
Also I see potential for a proper game if you are enable to create good enough puzzles and even have it so that you could switch between characters multiple times, so you could have even more challenging puzzles!