For all the jank this game has I still cannot deny the amount of charm and wit there is in its presentation. Right off the bat this game hits you with its stunning art direction and the reason why you keep going is to learn more about how this world works. Gameplay consists of beat-em up style rooms before entering the main boss fight, lather rinse repeat until you make it to the end. Upgrading and unlocking new skills to make each fight more easier and interesting to go through, to put it bluntly this game wants you to refight bosses. They want you to learn their rhythmic patterns and get better scores, if you're not about that, then you're looking at a very short runtime on your hands. There is worth in going back to the bosses because it nets you fans which can be used to spend on more skills and abilities to make things easier but that's the general gameplay loop here. The music is also great as there's many genre's and styles on display, but I mean if this is a game about music you need the actual music to be good so i'm glad they didn't mess that part up.
If you want a short but fun adventure with loveable characters and an interesting world I'd recommend picking this up, it's cheaper than most games but the amount of content in it will surely make it your moneys worth.