I absolutely adore this game, it is near-flawless. Sprites, music, boss design, character design, gameplay, it's so good! It feels like a love letter to Kirby and Sega games, the sound effects and music honestly reminded me of some Game Gear games. The combat is smooth and satisfying, and the game is incredibly challenging, but also incredibly fair at the same time. My only, and I mean only complaint is that the final bosses homing projectile is a little funky, sometimes hitting me when it's already faded away, but I simply changed my playstyle to stay as far away from that projectile as possible.
Please expand this into a full game, I would pay good money for it 10/10