Interesting idea! I feel like you captured the addictive mojo of suika games haha, I kept playing and playing. Very fun game.
The visuals are simple but cute. One feedback I have is that feeding the knight has a snowball effect that makes you unable to recover: Maybe if when they ate the ball their power could be decreased by that number instead of increased, I believe it would keep the game going for longer and give you a chance to come back on top.
I feel like there's an untapped style of games here, suika-likes with an extra layer of depth. Good job!