Really love the art style and vibe of this game. Without reading how your game fits the theme, my first thought was a role reversal of super meat boy where instead of leaving blood marks as you die, you clean it up, which I feel could have been a more interesting take than playing as the reset button. My main gripe is that cleaning up the red stains feel very separate from your other 2 mechanics, the box and the coins, which work off each other well, so it feels like the red stain mechanic is just an additional chore I have to do.
With regards to level design, I really like your intro levels for new mechanics, it was a good facilitator for learning them. Your other levels were not very challenging, I could immediately figure out what I had to do on first view of all levels, but that could be a good thing?
All in all, a really solid entry, and I'm surprised you don't have more ratings!