I streamed this game today and it took me about 5 hours. I did handicap myself by using a keyboard until the final boss... but it was an absolute blast. I am still blown away at how this could all be made by one person, even if it took years. Everything is a 10/10. Design, music, game play, voice acting... Mind you, I hate platformers. I played this at someones suggestion and thought it looked silly enough that I might not rage. I still raged (because I am bad at platformers) but I love it all the same.
My ONLY warning is that if you are photosensitive there are some things that are gonna make you queasy and I wish there were a way to turn them off! However, the sections were short enough that they didn't ruin my time! There is a warning at the beginning but just a bit more context for anyone who needs it.

Play this. It is every old school anime you've ever loved stuffed into a hilarious game.