I FRICKING LOVE THIS GAMEEEE!!!! let me just say this (because i just did this): THE LAST FIGHT WAS AMAZIIING!!! It was hard, but fair. when failing, I knew it was my mistake and not luck based.
Also, I like the fact that you don't add a tutorial, but instead make the game progressively harder (with more complex enemies). The controls are simple and easy to understand, which is awesome for a fighting game.
The only thing I would change is the swaying. when you sway to avoid a super attack, you have to do it rather early. I think you should be more lenient and allow the player to dodge the super even if you do it right before getting hit. I got used to it after some time, but at first, I found it pretty annoying.
Oh and I would also put more emphasis on the story (you give a small description to all characters/have them congratulate you/etc.) However, I know you probably didn't have enough time for all of these extras. It's just a suggestion!
Art is truly wonderful (love the art style). Sound effects and music are really fitting. Concept is amazing. I didn't submit a game myself, so I couldn't rate this beauty. So I'll do it here (this is after having played and commented 5 other games in this game jam):
★enjoyment: 4.5
★creativity & theme use: 4.2
★visuals: 4.2
★audio: 4.2