The Detective Is Already Dead

The Detective Is Already Dead (探偵はもう、死んでいる.) is a Japanese light novel series written by Nigojū and illustrated by Umibōzu. Media Factory have published the series since November 2019 under their MF Bunko J imprint. A manga adaptation with art by Mugiko has been serialized in Media Factory's manga magazine Monthly Comic Alive since May 2020. Both the light novel and manga are licensed in North America by Yen Press. An anime television series adaptation by ENGI aired from July to September 2021. A second season is set to premiere in October 2026.

Premise

Ever since he was a child, Kimihiko Kimizuka has attracted trouble. According to him, he was born with a condition that naturally attracts him to troublesome situations, such as being forced to join a flash mob while taking a leisurely walk, accidentally stumbling across an underworld transaction between drug dealers, and being at the site of crime scenes often enough to sometimes be considered a suspect.

One particular day in his third year of junior high, he was kidnapped and forced to carry a suitcase onto an international flight; on that flight, he met Siesta, a beautiful young woman who proclaims herself to be a "legendary detective". Forcefully made into her sidekick, Kimihiko helped her stop the plane from being hijacked, but not before Kimihiko discovered the existence of underworld organizations.

Characters

Kimihiko Kimizuka (君塚君彦)

An 18-year-old high school student with a talent to attract criminals so that in his past he often witnessed various crimes and was even later questioned by the police as a suspect himself. This talent, which he himself calls a "trouble magnet", apparently also led to his encounter with the master detective Siesta, who wanted to recruit him as her assistant, which he initially refused due to his characteristic of always ending up in unpleasant situations. Author Nigojū initially planned to give him the alias "Kurokage" when creating the series of novels.[2]

Siesta (シエスタ)

A mysterious and beautiful young woman and self-proclaimed "master detective" who owns a musket and seven items with magical abilities. Her motto is to solve criminal cases before they happen. Until her death, Siesta was a member of the Twelve Tuners, an organization of twelve people who want to save the world from chaos. Originally, Siesta was just a minor character in the series. After Nigojūs manuscript won the top prize in the MF Bunko Newcomer Award, she eventually became one of the main characters in the novel series.[2]

Nagisa Natsunagi (夏凪渚)

An 18-year-old high school student. She has a strong and dominant personality. As a child, she suffered from a heart defect and was forced to stay in the hospital bed because of it. A year before the actual plot began, she received a donor heart from an unknown donor. Originally, according to the author's plans, Nagisa was to become the only main protagonist of the novel series.[2]

Yui Saikawa (斎川唯)

A middle school girl who is already a successful idol at the age of 14 and regularly appears in magazines or commercials. She hires Kimihiko and Nagisa to protect her and an heirloom from a thief. Although Yui is the youngest character in the novel series at 14, she is considered the most adult character. Originally, Nigojū planned in his manuscript to put Yui in the role of the detective, but later changed this.[2]

Charlotte Arisaka Anderson (シャーロット・有坂・アンダーソン)

A 17-year-old assassin who was originally set to assassinate Siesta. However, after losing a fight against Siesta, Charlotte began to idolize her. She is half-Japanese and was born in the United States. She becomes an assistant to Fūbi Kase.

Hel (ヘル)

Hel was Alicia's alter ego, who now "lives" in Nagisa's body. She was Siesta's archenemy. To save Alicia's life, Siesta sacrificed her own life, but after her death has the ability to take control of Hel's consciousness and suppress her evil side.[3] Hel was known to "devour human hearts".

Fūbi Kase (加瀬風靡)

[4]

A senior police officer who has met Kimihiko several times. Because of his talent for being in the wrong place, she is particularly skeptical of him.

Chameleon (カメレオン)

A member of the secret organization SPES. He has the ability to transform into a chameleon, hence the name. In his human form he has white hair and purple eyes. In his chameleon form he is much larger, has sharp teeth and takes on a fearsome appearance.

Bat (コウモリ)

Bat is a former antagonist of the series. He was a member of the secret organization SPES and was behind the plane hijacking, but was confronted by Siesta and Kimihiko and defeated in a fight. Bat is a liar and a coward who only acts on his own whim.

Cerberus (ケルベロス)

A member of the secret organization SPES and is an android, who also has genes of a Kerberos and a werewolf. He is Hel's guardian. Like Chameleon, he also has the ability to assume another form - that of a werewolf. He is smart, but follows his primitive instincts.

Alicia (アリシア)

A girl with pink hair, which is tied into two ponytails. She wears a dress that is similar to Alice, the title character from the novel Alice's Adventures in Wonderland by Lewis Carroll.

Media

Light novel

The series is written by Nigojū and illustrated by Umibōzu. Media Factory has published thirteen volumes since November 2019 under their MF Bunko J imprint. It is licensed in North America by Yen Press.[6]

Spin-off

Its spin-off Nagisa Natsunagi Still Wants to Be a High School Girl (夏凪渚はまだ、女子高生でいたい.) is written by Syusui Tsukimi, illustrated by Hanekoto, and supervised by Nigojū. Media Factory has published two volumes since August 2023 under their MF Bunko J imprint. On February 28, 2025, Yen Press announced they had licensed the spin-off series.[32]

Another spin-off Charlotte wa Tada, Jiken wo Tokitai. (シャーロットはただ、事件を解きたい.) is written by Hinachihoko, illustrated by Minori Chigusa, and supervised by Nigojū. Media Factory published the novel in May 2024 under their MF Bunko J imprint.

Another spin-off Saikawa Yui wa Demo, Aidoru de Iru (斎川唯はでも、アイドルでいる.) is written by Shao Senlin, illustrated by Almic, and supervised by Nigojū. Media Factory published the novel in August 2024 under their MF Bunko J imprint.

Spin-off

Manga

A manga adaptation by Mugiko was serialized in Media Factory's manga magazine Monthly Comic Alive from May 27, 2020, to October 27, 2023.[39][40] It has been collected in six volumes. Yen Press also licensed the manga adaptation.[41] The manga series covers the first and third volumes of the novel series.[42]

A second manga adaptation by Poni titled The Detective Is Already Dead: The Lost Memory (探偵はもう、死んでいる. -the lost memory-) was serialized in Monthly Comic Alive from January 27, 2021, to September 27, 2022.[55] It has been collected in four volumes. The manga series covers the second volume of the novel series.[56]

Spin-off

Its spin-off Toaru Meitantei to Joshū no Love Com-deki Nichijō (とある名探偵と助手のラブコメ的日常), illustrated by Moyashi Itame, has been collected in two volumes so far.

Others

An art book Tantei wa Mō, Shinde Iru Umi Bōzu Ātowākusu (探偵はもう、死んでいる. 　うみぼうずアートワークス) is published by Kadokawa.

Anime

The 12-episode anime television series adaptation was announced on January 20, 2021. The series is animated by ENGI and directed by Manabu Kurihara, with Deko Akao handling the series' scripts, and Yōsuke Itō designing the characters.[64] Yuuyu, Naoki Tani, and Tatsuya Yano composed the series' music. It aired from July 4 to September 19, 2021, on AT-X and other channels, with the first episode airing as a one-hour special.[65][66] Mary × Jon-Yakitory performed the opening theme song, "Koko de Ikiteru" (ここで生きてる), while Kagura Nana performed the ending theme song, "Kodō" (鼓動).[4] Funimation licensed the series outside of Asia.[67]

Episodes

The first part of Ep.1, Ep.2 to Ep. 4, Ep. 10, and part of Ep. 11 to Ep. 12 cover the story of Vol.1 of the light novel series. The second part of Ep.1, Ep.5 to Ep.9, and part of Ep. 11 to Ep. 12 cover Vol.2 of the series.[80][81]

The Detective Is Already Dead

Premise

Characters

Production

Media

Light novel

Spin-off

Spin-off

Manga

Spin-off

Others

Anime

Episodes

Reception

See also

Explanatory notes

External links

References

Spin-off

Episodes

type	manga
title	The Detective Is Already Dead: The Lost Memory
author	Nigojū
illustrator	Poni
publisher	Media Factory
magazine	Monthly Comic Alive
first	January 27, 2021
last	September 27, 2022
volumes	4