This looks very nice. Characters are super cute and animations are also cool. Music is relaxing.
When I finished the tutorial level, I felt like it would be a puzzle game with a few small levels. But when I saw the second level, I was like "woah". IMHO it was too big xD.
Movement is good and responsive, however I would like to have a separate button to interact with buttons, because sometimes you just accidentally hit one and need to do it with another character to return back. It might be not a big problem, but the transitions are a bit slow-ish. Instead of showing every time what is exactly happening when you hit the button, maybe it is worth to show it only for the first time. Also for such a big level it would be nice to have a map of the whole level.
Overall, I think the level is too big. And when you need to backtrack back and forth, it would be much nicer to have more compact level