I've watched two episodes so far and I like it.
There are also two Darker Than Black manga.
The first one is, in my opinion, a terrible shoujo (VERY) alternative version of the first season.
The 2nd, and newer, seems to be good. It's a seinen and it takes place during the two year time skip between the seasons.
I updated the episode count to 4 as well. Then I added the
second manga so I could mark it.