When One Takes Back What Was Lost Within the Wall... (Part 1)
When an explosion is set up to steal a meteor fragment from PANDORA headquarters, Hei is sent it to steal it before anyone else does. On his first day he meets up Corinna Moku, who breaks down not long after arriving at the gate, and Meena Kandaswamy, who is from the same organization as Hei and will be helping him find the fragment. Now Hei must keep from being detected as a Contractor and find the meteor fragment. But will a death at the headquarters break his cover?
Aired 15/06/2007EP 11 - When One Takes Back What Was Lost Within the Wall... (Part 1)

Darker than Black
In Tokyo, an impenetrable field known as "Hell's Gate" appeared ten years ago. At the same time, psychics who wield paranormal powers at the cost of their conscience also emerged. Hei is one of the most powerful of these psychic agents, and along with his blind associate, Yin, works for one of the many rival agencies vying to unlock the mysteries of Hell's Gate.
(Source: Anime News Network)