So I didn't know there was a copy ability going on until I read the description after playing, which confused me because nothing seemed to be different the whole time. Either way, this jam has some cute looking artwork and interesting enemy designs, and I really dig how some of the music gets remixed at later levels, but I've got a handful of nitpicks. For one thing, Kokoro moves painfully slow, particularly when trying to jump since you have to be right near the end of the platform.  The enemies were pushovers until the boss stage so it didn't really feel like I was being prepared for it beforehand, despite that probably being the intention. The cat enemy was a little overboard too, and I was only able to sort of guess how to outmaneuver it. Also it's particularly odd how the enemies flash and then get hurt, including the player. If you wanted the enemies to pose a  threat for longer, making them take two hits would probably communicate better to the player. Also the presentation had some issues like music jumping in volumes between tracks and the background cutting off and looping in strange ways

I got to Koishi the third time and nothing happened so I guess I finished it? Either way, this had some nice ideas and was probably held back by a lot of time constraints but it was a very good jam effort so nice job!