Darker than Black: Kuro no Keiyakusha

The series progresses in two-episode mini-arcs up until the satisfying finale. The episodic feel just goes away after some time as they all neatly come together towards the end. This anime is highly recommended, but be warned that it is pretty dark, detailed, and complicated, so prepare to work your brain cells! Overall, DTB is extremely interesting and entertaining, especially for fans of the genre.

Darker than BLACK - Kuro no Keiyakusha - My Anime Shelf

Darker than Black: Kuro no Keiyakusha Gaiden - Darker than Black

JAPAN manga LOT: Darker than Black: Kuro no Keiyakusha vol.1+2

Darker than Black - Wikipedia

Hei - Darker than Black - Mobile Wallpaper #486518 - Zerochan

DARKER THAN BLACK: Kuro no Keiyakusha - Sakura no Hana no Mankai

Darker than Black, Anime Voice-Over Wiki

Contractors, Darker than Black Wiki

Darker Than Black: Kuro No Keiyakusha Gaiden - Colaboratory

The Story of Darker than Black Anime Spotlight - Thisvthattv