Review on rewatch. S02 of Darker than Black exists only to show us to be careful what we wish for when we ask for another season of something good. The world would be better off without this. It takes the most interesting and cool character of the first season (Hei), neuters him, gives him alcoholism as a cheap has-been trope, then focuses on a new character nobody cares about. Everything that was interesting about the first season, from the noir vibe, to scifi intrigue, to funny or gripping side characters -- all this goes out the window with terrible writing.
This stands right up there with Haruhi Suzumiya's Endless 8 as far as biggest middle finger to the fanbase goes. If you want more of what makes the first season interesting, I'd try Psycho Pass or something else. S01 would've been better off as a standalone, including the OVAs which just open the door to the nonsense of S02.
