It's an alright animation, it feels really smooth and all, and you can't complain about the background and the cool twist in the end either. But, the slimes are very pixelated around the edges. If you want an animation based of slimes and such, you need to make sure their looks have smooth outlines. This also goes for other things, for they also have the same pixelated lines to form them. Do take a look into that issue.