Each of the episodes can easily be viewed as singular entities thanks to the wide range of characters (I actual like the anime more for this reason). Usually when an anime has many characters we end up focusing ether too little or too much on the wrong characters (who want to sit down and listen to 12 episodes of characters stating pointless rubbish).
The only downside is that because you are constantly bouncing from story to story you don’t really get much time to bond with the characters. They look cool and memorable in their own right but, I don’t feel like I know any of them outside of what they do and how they do it.
*Maybe the director wanted it that way.*
This anime uses its city backdrop to its advantage by making sure that all the crimes committed are (for the most part) believably realistic. I have fallen in love with the dark feel of this place you never know who is going to attack, kidnap or even deceive you (not many anime can do that).
^_^ I have not been this excited to watch an anime in long time.