Darker Than Black - Kuro no Keiyakusha: Gaiden (TV Series)
154
TV Series. Animation. Sci-Fi. Mystery. Drama. Adventure
TV Series (2010). 4 Episodes. These are the sequel to season 1, that is, what happened between season 1 and 2 explaining many questions, which tell what has happened to the protagonists of the two years and so understand a little better with the personality now in the second season.