Very short but very sweet! I beat both bosses in just a few minutes, and I even did the first one in a perfect run with no hits (i took one damage in the second one :{ ) I really enjoyed the very polished art and animations, looked and felt very clean. The bosses were also made with interesting and challenging designs that rewarded you for learning the optimal way for dealing with them.
I wish there were more bosses and maybe even a hard mode, but still what you've made is very nicely done and polished and I quite enjoyed it. Awesome work!