Darker than Black: Kuro no Keiyakusha Gaiden

Tells the story of what happened to Yin and Hei between the first and second series.
- Japanese: Darker than Black: Ryuusei no Gemini Specials, Darker than BLACK 2 OVA, DTB, Darker than Black: Ryuusei no Gemini Episode 12
- Type: TV
- Episodes: 4
- Status: Completed
- Aired: Waktu Standar Jepang
- Genres: Action, Mystery, Sci-Fi, Super Power
- Score: 8.05
Darker than Black: Kuro no Keiyakusha Gaiden Episodes List
- Episode Title Date Added Watch
- Episode 1 4 months ago Start Watching!
- Episode 2 4 months ago Start Watching!
- Episode 3 4 months ago Start Watching!
- Episode 4 4 months ago Start Watching!