Kei×Yaku: Abunai Aibou (2022) poster
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Ratings: 7.5/10 from 3,983 users
# of Watchers: 12,316
Reviews: 31 users
Ranked #6097
Popularity #1308
Watchers 3,983

Three years ago, a disappearance known as the Joker Case went unsolved, and the file closed. Renewed interest in the case demands a second examination of the evidence. Investigator Kinoshita Ichiro from the Public Security Bureau of the Tokyo Metropolitan Police Department is called on for a reunion of the investigation. However, he is assigned a completely different mission. His assignment is to spy on a gang clan led by its young head, Hanabusa Shiro. A man of mystery, Shiro has risen to the rank of Wakagashira (young leading subordinate in the yakuza group) in three short years. In the course of his mission to get close to Shiro, Ichiro learns a shocking fact, steering him to draw up a fake lover's contract with Shiro. Their undercover operation gradually leads to an incident sure to shake up both the nation and their destinies. (Source: Blue Poison at MyDramaList; edited by MyDramaList) ~~ Adapted from the manga "Kei×Yaku: Abunai Aibou" (ケイ×ヤク -あぶない相棒-) by Kaoruhara Yoshie (薫原好江). Edit Translation

  • English
  • 中文(简体)
  • Русский
  • Türkçe
  • Country: Japan
  • Type: Drama
  • Episodes: 10
  • Aired: Jan 13, 2022 - Mar 17, 2022
  • Aired On: Thursday
  • Original Network: NTV YTV
  • Duration: 45 min.
  • Score: 7.5 (scored by 3,983 users)
  • Ranked: #6097
  • Popularity: #1308
  • Content Rating: G - All Ages

Where to Watch Kei×Yaku: Abunai Aibou


Cast & Credits


Kei×Yaku: Abunai Aibou (2022) photo
Kei×Yaku: Abunai Aibou (2022) photo
Kei×Yaku: Abunai Aibou (2022) photo
Kei×Yaku: Abunai Aibou (2022) photo
Kei×Yaku: Abunai Aibou (2022) photo
Kei×Yaku: Abunai Aibou (2022) photo


Kino San Flower Award1
24 people found this review helpful
Mar 17, 2022
10 of 10 episodes seen
Completed 6
Overall 7.0
Story 7.0
Acting/Cast 10
Music 10
Rewatch Value 8.0
This review may contain spoilers

A crime investigation with a strong theme of bromance.

Where do I begin with this series? Of course like many fans, I found out about this series on twitter and only knowing Inukai Atsuhiro. I went in and bought all of the source manga digitally. Reading the manga really excited me of what I call a mix of action thriller investigation and semi metaphoric romance between Ichirou and Shirou.

The drama version of Kei x yaku is almost prefect. But because as a manga reader and knowing how good the drama could have been I can’t rate this series higher than 7.

I also have to warn that most will not like the ending. But it leaves a possiblity for season 2/movie follow up.

Kei x Yaku as a standalone drama is still very good, it’s got action, suspense, mystery but good chemistry between the two main leads.


Kei x Yaku base story brings together Ichirou a public officer and Shirou a Yakuza gang leader together through one person they both know. It leads them to work undercover as a “couple” to find out the truth the story and from this unfolds into something more deep. As well as the bond between Ichirou and Shirou forming.


One of the biggest positives/highlights of Kei x yaku is the cast. I have little complains (but in my ideal mind I would of casted an actor who’s the same height as Inukai). This would be my 1st introduction to Nobuyuki Suzuki in anything that he’s done, I will say Suzuki did great! He pulls off the soft but serious Ichirou, the best thing about his performance is that he can withhold his emotions in his acting.

I was more interested to see how Inukai Atsuhiro was going to act as Shirou, because I really like Shirou in the manga. Inukai blew those expectations out of the water, because Inukai is the perfect casting for Shirou and I couldn’t see anyone else but Inukai play as him. It’s amazing that dyeing your hair blond changes his whole image, but the slight gestures and attitude he displays screams Shirou. This so far is the like the best thing I’ve seen Inukai act and I would recommend 100% for Inukai fans just to watch him in this.

The rest of the cast is also very strong.


I have to give a shoutout to composer Ryo Nobuguchi because the soundtrack to Kei x yaku is amazing. The main theme alone is enough to make you excited as well as 13th drums. An amazing mix of cello, violin, piano and drums. The music is one of the highlights of the show.


What I think the best thing about Kei x yaku is quality. The directing is amazing, the production is high quality, the cast/acting is amazing, and the music is amazing. Put it together and you get something like a semi action movie like drama. The 1st episode will always be the best one for me as it goes out with a bang.

I also like that the story doesn’t ignore the bond between Ichirou and Shirou, because the drama weaves in the investigation action with general scenes with just Ichirou and Shirou getting on with their lives.


Kei x yaku honestly could have been something more special. One factor of the manga is that it has hints of showing something more between Ichirou and Shirou but the drama version doesn’t go beyond the “bromance” line. I assume it’s because they think the audience wouldn’t be able to tell what Ichirou and Shirou relationship is if they showed it like the manga. So face down the drama version is just a bromance, any BL drama fans looking for the next History Trapped this drama isn’t it.

Another factor is that the manga is WAY MORE ACTION PACKED. There’s a lot of action scenes in the manga that is gripping, I assume the drama didn’t have that much budget so these action scenes were reduced. But there’s an odd pacing to the investigation, like trial and error approach. The characters think they make progress but then they stumble and the progress they made is pushed back. There’s also way too many flashbacks to fill in screentime when they could of shown more new scenes.


Kei x yaku is a good investigation action thriller with bromance. If you are open to watching bromance then you are in for a ride! Any BL drama fans just looking for the romance I suggest to watch an actual BL drama.

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14 people found this review helpful
Mar 18, 2022
10 of 10 episodes seen
Completed 2
Overall 8.5
Story 8.0
Acting/Cast 9.0
Music 8.0
Rewatch Value 7.5
I really wanted to write about this drama. I haven't watch a lot of jdramas and I don't really know a lot. I found this by accindent as a BL drama. Also, I haven't read the manga (but I am planning to).

I really loved the drama. The story is really interesting, but not the most unique. I may not know about japanese dramas, but as a crime thriller lover, let me tell you we have seen this plot a lot. But it is used nicely here and with the bromance/BL element it is a unique combination. But, I agree with a lot of comments and reviews, in about the middle the drama started to lose its suspense and interest. And in a mystery/crime drama this is unacceptable. As for the bl/romance thing, even if I started the drama for this reason, I really don't care if it is more subtle or is just bromance. In this story works, because it is not the main plot. For me there is enough moments to understand how deeply Shiro and Ichiro care for one another.

It isn't a perfect drama by far, but the reason I wanted to write this review is more because I really enjoy japanese movies and dramas. Even the most low budget productions find a way to give a nice feeling. They have a really realistic texture and you can actually feel the people, the society, the real world. As oposed, for example, the overly glorified thai or chinese dramas, where you feel you are in an illustration and cannot connect with anything. What I mean, for example, in japanese productions the roads are dirty, the houses are messy or with bad lights, the public hospitals are a bit worn out, there is nothing perfect and these little details make you identify with the enviroment. Even the worst dramas have really good aesthetics. And this is the reason that lately I really enjoy japanese dramas and movies.

(P.S.: Is it really only me or the music theme for the sadder scenes (the one that starts with a beat) has really similar beat with Outro: Tear of BTS? Not shading anything and I don't want to start anything, just my observation. Had any fellow ARMY the same feeling?)

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Recent Discussions

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Where can I watch this legally (in the US)? by kadie890 2 0
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  • Drama: Kei×Yaku: Abunai Aibou
  • Country: Japan
  • Episodes: 10
  • Aired: Jan 13, 2022 - Mar 17, 2022
  • Aired On: Thursday
  • Original Network: NTV, YTV
  • Duration: 45 min.
  • Content Rating: G - All Ages


  • Score: 7.5 (scored by 3,983 users)
  • Ranked: #6097
  • Popularity: #1308
  • Watchers: 12,316

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