Darker than Black: Kuro no Keiyakusha Gaiden

Introduction

Tells the story of what happened to Yin and Hei between the first and second series.

Title: Darker than Black: Kuro no Keiyakusha Gaiden

English: Darker than Black: Kuro no Keiyakusha Gaiden

Synonyms: Darker than Black: Ryuusei no Gemini Specials, Darker than BLACK 2 OVA, DTB

Japanese: Darker than BLACK -黒の契約者 外伝

Type: Special

Total: 4

Status: Completed

Aired: Jan 27, 2010 to Jul 21, 2010

Genres: Action, Mystery, Sci-Fi, Super Power

Duration: 24 min. per ep.

Rating: R - 17+ (violence & profanity)