Ranked #326
Darker than Black: Kuro no Keiyakusha Gaiden

Darker than Black: Kuro no Keiyakusha Gaiden

Alternative Titles

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
Episodes: 4
Status: Finished Airing
Aired: Jan 27, 2010 to Jul 21, 2010
Duration: 24 min. per episode
Rating: R - 17+ (violence & profanity)
L represents licensing company


Score: 8.171 (scored by 57271 users)
Ranked: #3262
Popularity: #286
Members: 92,692
Favorites: 447
1 indicates a weighted score
2 based on the top anime page.

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

Related Anime

Prequel: Darker than Black: Kuro no Keiyakusha
Sequel: Darker than Black: Ryuusei no Gemini

Characters & Voice Actors

Kiuchi, Hidenobu
Kiuchi, Hidenobu
Liebrecht, Jason
Liebrecht, Jason
Fukuen, Misato
Fukuen, Misato
Palencia, Brina
Palencia, Brina
Kouda, Kaho
Kouda, Kaho
Green, Jennifer
Green, Jennifer


Wakabayashi, Kazuhiro
Sound Director
Yanagisawa, Tetsuya
Nishimura, Hiroyuki
Ishii, Yasushi
Theme Song Performance, Music

Write a review | More reviewsReviews

Dec 24, 2014
The first season of “Darker Than Black” left the exact fate of two of its central cast in an ambiguous state. This four part OVA continues the story past the first season finale while serving as the transition into the new direction second two would take in Ryuusei no Gemini. This OVA combines the strength of both season into a nice package telling a compelling story, interesting leading characters, and great action scenes.

Good: Fills the gap between seasons 1 & 2

This four part OVA can be summarized as a “couple on the run” sort of story. Hei and Yin are trying to survive daily life read more
I found this review Helpful  Not Helpful
Jun 26, 2010
This is the bridge between Kuro no Keiyakusha (Season 1) and Ryuusei no Gemini (Season 2). For those who watched both seasons THIS IS A MUST! In these 4 episodes they will explain the holes in Ryuusei no Gemini.

(Will update as season ends)

Story: 9/10

These 4 episodes explains about the gap in the 2 years between season 1 and season 2. Like before of DtB, the story is well executed and polished. It is based on the character development between Hei and Yin. Also answers many of the questions that were brought in season 2.

Art: 9/10

Amazing, I would say it is better read more
I found this review Helpful  Not Helpful
Dec 24, 2013

I'll keep this short: Anyone who is a fan of Darker than Black NEEDS to find a way to watch these 4 episodes; they are crucial to understanding so many things about the series, including several things that didn't make sense in season 2, the relationship between Hei and Yin, and Hei's character development.

The OVA bridges the gap between seasons 1 and 2, explaining what happened to Hei and Yin during that time, and not only is this information vital to the plot, it is incredibly entertaining. This OVA is 4 episodes of pure awesome, as we finally read more
I found this review Helpful  Not Helpful
May 1, 2013
*This is an archive from my Anime-Planet account*

Critic's Log - Earthdate: June 21, 2012. Supplemental for Review #10: Darker Than Black Gaiden (Side Story).

It is difficult to forget the past that has horrific memories, it feels like a nightmare that you could not wake up from... The only thing to do is move forward.

If you have been reading my other reviews, keep this in mind... Before I start reviewing something, I like to poke a little fun during the review and I sort of did something like that just now with the poetic philosophical intro I had with this review plus the previous reviews I read more
I found this review Helpful  Not Helpful


Both have very similar storylines .The protagonists are escaping from an establishment .Builds a base for the series to progress .High on action and emotions.
At first, both these animes have a similar drama component: in order to do their duty main characters have to kill their loved ones, however in Ga-Rei Zero drama is payed more atention to and is more deep than in DTB. Both these series deal with organisations exterminating threats to the mankind (ghosts in GRZ case and contractors in DTB case). Sure thing there are mystical powers and supernatural abilities included. Also, you will feel painfully sorry for main characters whichever you watch.
In case you watched DTB only because of action and fights, it's unlikely you will like GRZ. There is action (actually, half of the series is swordsfighting), but it is drenched with main character's emotions and incertitude . But if you have nothing against adversaries trying to resolve an agonizing dilemma of fighting against their ex-friends, you will definetely enjoy it.

Opening Theme

No opening themes found, add themes.

Ending Theme

"Can you fly" by Yasushi Ishii

Recent News

Side Story Episodes of Darker Than Black 2 Are DVD/BD Release Only [Confirmed] ( 1 2 )
38 replies by Onikukki »»
03-26-10, 10:37 PM

Recent Forum Discussion

Why is she emotionless
4 replies by Kmolson »»
01-21-15, 1:47 PM
Will I still be able to understand everything despite watching the first season such a long time ago?
3 replies by TankaTed »»
01-12-15, 11:32 PM

Fansubbing Groups

Which fansubbers do you like the best? Click + to approve of their subs for this show. Click - if you don't think they did such a great job.
BSSubs / Bullet Speed Subs [BSS] 124 of 126 users approve
God-Speed Subs [God-Speed Subs] 12 of 13 users approve
Inshuheki [IS] (Spanish) 9 of 10 users approve
Coalgirls [Coalgirls] 19 of 23 users approve
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Related Clubs

Sci-Fi club, Darker Than Black II, Darker Than Black Season 3, ~Hei x Yin~, Hei x Suou FC, The Twin Factor, English Dub Fanclub, The Yin FC, VBS's Domain: The Awesome Society, Claude Fanclub, Hei Fan Club ^_^, Character Manager, Darker than Black Season 3 Petiton, Xfire Users, Contractor generations, Manga Anime League (MAL), Darker than Black, Hei FC, IZUMI64's World ~俺様の世界~, see all

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