I like the mechanic, it feels strangely satisfying to throw Koto at the candy to grow him(?). Seems like it has great opportunities for puzzles, but that potential wasn't really explored — at least in the early levels (I got stuck on 'Gooey Candy Center'). Also for some reason sprites would "shimmer", perhaps because they didn't quite match the resolution. Overall I think it's a promising idea but needs a little work! :-)