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Darker than Black: Kuro no Keiyakusha Gaiden

Alternative Titles

Synonyms: Darker than Black: Ryuusei no Gemini Specials, Darker than BLACK 2 OVA, DTB, Darker than Black: Ryuusei no Gemini Episode 12
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
Producers: Square Enix
Licensors: Funimation
Studios: Bones
Source: Original
Duration: 24 min. per ep.
Rating: R - 17+ (violence & profanity)


Score: 8.061 (scored by 97,295 users)
1 indicates a weighted score. Please note that 'Not yet aired' titles are excluded.
Ranked: #4672
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #465
Members: 165,777
Favorites: 776
Ranked #467Popularity #465Members 165,777
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Episodes: /4
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Tells the story of what happened to Yin and Hei between the first and second series.


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Characters & Voice Actors

Kiuchi, Hidenobu
Fukuen, Misato
Hazuki, Mina
Saiga, Mitsuki
Iwanaga, Tetsuya
Jie, Xiao
Minagawa, Junko
Sawasaki, Youko
Yoshizumi, Kozue
Kouda, Kaho
Kirimoto, Takuya


Nishimura, Hiroyuki
Ishii, Yasushi
Theme Song Performance, Music

Edit Opening Theme

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Edit Ending Theme

"Can you fly" by Yasushi Ishii

More reviewsReviews

Dec 24, 2013
Link_of_Hyrule (All reviews)

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
Dec 13, 2015
ChucriBZ (All reviews)
[b]DtB: KnK Gaiden[/b]
This is a nice follow up from the first season but obviously if you watch this first before Ryuusei no Gemini because this was aired one year after the 2nd season and for some reason i think the 2nd season will be different than i thought because of the cover with that girl with the sniper.

The story follows Hei and Yin in their attempt to run from the Syndicate, they now have a more deep relation of caring and even in love and in which they will have their own problems between them as now Yin has ''another'' personality that wants to take read more
Dec 24, 2014
Arsene_Lucifer (All reviews)
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
Nov 14, 2011
kristen4444 (All reviews)
I really liked Darker Than Black. Not loved, just liked. What made me fall in love with the entire series was Gaiden. An OVA bridging the gap between the first and second seasons, it did not disappoint.

Story - 10:
What Gaiden gives is answers. A better understanding of what went down between Hei and Yin between the two seasons, and a good preventative of confusion before watching Gemini of the Meteor. It has all the amazing qualities of the first season, jam-packed with exciting, intense action and fight scenes, but also smoothly introduces a new chapter in the lives of Hei and Yin. A fantastic mix read more


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