Darker Than Black: Ryuusei no Gemini

After a paranormal phenomenon takes over Yin, BK-201 is left to hunt for answers from the shadows, alone - until he encounters Suo, a young girl whose life changed the night a meteor crashed to Earth. With Contractors attacking from all sides, and the mysterious organization Section 3 closing in, the Black Reaper fights to keep Suo alive while he searches for the truth behind Yin's disappearance.