The 14th novel of the Tantei wa Mou, Shindeiru (The Detective Is Already Dead/ 探偵はもう、死んでいる) light novel series by nigozyu has revealed that the series will end with the release of its next novel.
The first novel by author nigozyu and illustrator Umibouzu, was released by Kadokawa in November 2019, and the 14th novel was published on October 23rd, 2026.
The novel series was adapted into a manga by Mugiko from May 2020 to October 2023 in Kadokawa’s Monthly Comic Alive magazine. Kadokawa published the manga’s first tankoubon volume in November 2020 and the sixth and final volume in October 2023.
Yen Press releases the novel series and manga adaptation in English under the name The Detective Is Already Dead. It has released all six volumes of the manga, and it released the 12th novel in the novel series in August 2026.
Yen Press describes the novel story below:
“When the story begins without its hero Kimihiko Kimizuka has always been a magnet for trouble and intrigue. For as long as he can remember, he’s been stumbling across murder scenes or receiving mysterious attache cases to transport. When he met Siesta, a brilliant detective fighting a secret war against an organization of pseudohumans, he couldn’t resist the call to become her assistant and join her on an epic journey across the world. …Until a year ago, that is. Now he’s returned to a life that is normal and tepid by comparison, knowing the adventure must be over. After all, the detective is already dead.”
The novel series was also adapted into an anime, which premiered in July 2021. The anime was directed by Kurihara Manabu at ENGI studios, and it got a second season on October 7th, 2026.
[https://www.youtube.com/watch?v=nYYGphs8jvA]
The anime is available to stream on the Crunchyroll website under the name The Detective Is Already Dead, and it describes the anime story below:
“After thwarting a hijacking with beautiful, silver-haired detective Siesta, Kimihiko leads a life of globe-trotting and crime-solving—until Siesta dies. A year later, a new case will open old wounds as it threads murder, conspiracy, and his dead partner!”
