Short Summary: This anime exceeded my expectations drastically and kept me wanting more till the last episode. The pacing in this anime was excellent. It never felt dry and every episode was important even if it didn't seem that way at first. The action in this show was top notch which is surprising because the story is very deep and it is usually hard to have a deep anime with great action scenes but this anime was able to combine the two masterfully. The best aspect of this show, in my opinion, was the complete character change that the three main characters went through. Zwei goes through the most changes and it's interesting to see him go back and forth from ruthless assassin to broken teenager. This isn't a really upbeat anime so expect mellow music and a gloomy atmosphere. Also be prepared for some characters that you might get attached to, to die.
Tip: The dub for this anime is actually really good.
