I love the art and I thought it was a fun story, however I would have liked some more story elements, not just a text introduction at the beginning. It also doesn't fit the theme very well because of this reason, because the story fits the theme, but there is not much story in the actual gameplay. I like the battery mechanic but I feel like it should be harder, you should really be punished if you use the sword too much. I can see why you used the arrow keys for movement, but I feel like it's a bit counter-intuitive, especially because it's only explained in the game description. Overall a nice game with a potentially nice story, you could definitely turn this into a fully fleshed out game!