Tantei wa Mou, Shindeiru.

The Detective Is Already Dead

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Alternative Titles

Synonyms: Tanmoshi
Japanese: 探偵はもう、死んでいる。
English: The Detective Is Already Dead
More titles


Type: TV
Episodes: 12
Status: Finished Airing
Aired: Jul 4, 2021 to Sep 19, 2021
Premiered: Summer 2021
Broadcast: Sundays at 21:30 (JST)
Licensors: Funimation
Studios: ENGI
Genres: ComedyComedy, MysteryMystery, RomanceRomance
Theme: DetectiveDetective
Duration: 25 min. per ep.
Rating: PG-13 - Teens 13 or older


Score: 6.401 (scored by 142980142,980 users)
1 indicates a weighted score.
Ranked: #73472
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #640
Members: 373,366
Favorites: 3,174

Available At


Streaming Platforms

Ranked #7347Popularity #640Members 373,366
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Episodes: /12


Kimihiko Kimizuka has found himself inadvertently entangled in various crimes more times than he can remember, referring to himself as a magnet for trouble. One day, as if it was nothing out of the ordinary, a group of unknown men kidnaps him, forcing him to board a flight—where he also encounters a hijacking. Amid the resulting chaos, however, Kimizuka meets a stunning silver-haired beauty, going by the codename Siesta, who then saves the day.

Claiming to be a legendary detective, Siesta enlists Kimizuka to be her sidekick. Though Kimizuka refuses at first, with Siesta's insistence, he eventually joins her—marking the start of a grand adventure spanning the entire world, preventing multiple threats that could spell doom for humanity along the way.

Unfortunately, after three years of their unpredictable yet enjoyable time together, Siesta abruptly passes away. Distraught, Kimizuka tries to leave all memories of her behind, but as he begins to meet more people, it seems that Siesta's influence will never truly die.

[Written by MAL Rewrite]

Characters & Voice Actors



Opening Theme

Apple Music
Amazon Music
Youtube Music
"Koko de Ikiteru. (ここで生きてる。)" by Mary x jon-YAKITORY (めありー×jon-YAKITORY) (eps 2-??)

Ending Theme

1: "Koko de Ikiteru. (ここで生きてる。)" by Mary x jon-YAKITORY (めありー×jon-YAKITORY) (eps 1)
2: "Kodou (鼓動)" by Nana Kagura (カグラナナ) (eps 2-??)

Episode Videos


Jan 17, 2022
This show is so bad and so terrible, that it is literally my favorite anime now. 10/10. There is truly nothing in this world better than The Detective is Already Dead. This series deserves a movie, a second season.. no not even a second season 4 extra seasons. In fact we need this series to last longer than humanity itself, so when aliens look back into our world's history they can also watch The Detective is Already Dead. I do not know how else to describe this show other than an absolute beauty, from the characters having absolutely zero value to the idol scenes. This ...
May 22, 2022
Mixed Feelings
The worst part of this anime is that it could have been good. Besides the first episode, the show feels like random clips from the second or even third season of a show. Plot threads are shown in flashbacks but instead of resolving them, they just create more plot threads that they don't do anything with. I never read the source material for Tantei wa Mou, Shindeiru... but I can't imagine how this was all supposed to work.

The anime withholds 90% of the story from you and assures you that stuff was super cool. And then the plot twist only makes sense if the ...
Sep 19, 2021

This show is totally fucking with us.
The main girl is named Siesta. “Siesta” is Spanish for “nap.”
And this show does nothing but put you to sleep.

But that’s only if you’re lucky, because staying awake is torture. I know “The Detective is Already Dead” may sound like an enticing title, but don’t be fooled. This is a battle harem. It may not be set in an academy, and there may not be an arena for waifu fights, but the essential elements are there, and the show isn’t ashamed of this at all. In fact, it’s the only selling point. Why is a show about a ...

Interest Stacks

50 Entries · 18 Restacks
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Recent Forum Discussion

Poll: Tantei wa Mou, Shindeiru. Episode 1 Discussion ( 1 2 3 4 5 ... Last Page )
AnonymousGuy9 - Jul 4, 2021
274 repliesby AshRayKay »»
Apr 28, 6:32 PM
Poll: Tantei wa Mou, Shindeiru. Episode 2 Discussion ( 1 2 3 4 5 )
Stark700 - Jul 11, 2021
239 repliesby Felix_Lorenz »»
Jan 7, 12:38 PM
Does Siesta’s hairband (scrunchies or whatever) have any meaning?
RudeRedis - Dec 28, 2023
4 repliesby illufox »»
Dec 28, 2023 5:09 PM
Poll: Siesta is the plot, no cap (poll)
Onii-chanShuki - Sep 19, 2021
13 repliesby ProdigyKing »»
Dec 21, 2023 10:31 PM
Poll: Tantei wa Mou, Shindeiru. Episode 12 Discussion ( 1 2 3 )
Stark700 - Sep 19, 2021
125 repliesby saurabhshivam »»
Dec 9, 2023 10:05 AM