The story of Tantei wa Mou, Shindeiru. follows Kimihiko Kimizuka, a young man who four years ago became the assistant of a mysterious detective known as "Siesta" on a hijacked airplane. Together, Kimihiko and Siesta went on mind-boggling, globe-trotting adventures while combatting a secret organization, but all of that came to an end when they were separated by Siesta's death. In the present day, Kimihiko tries to return to an ordinary, boring life as a high school student, but things are never that simple, even though the detective is already dead.
The Detective is Already Dead It is also Known as: 探偵はもう、死んでいる。, La Detective Está Muerta.
Genres: Comedy , Drama , Detective , Seinen , Mystery , Romance
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Top 5 Manga Like The Detective is Already Dead (Tantei wa Mou, Shindeiru.) [2025 List]
5. Sahyeongsonyeon

Park Tae-Jun Comics Company, Kim Soong-Nyung / Gwangsan
Shin Kim, the rare serial killer who shook the Republic of Korea!
Ji-hoo, who lost his family to Kim Shin, meets another victim, Du-seok, and is trained as a human weapon. And he goes to prison on his own to kill the killer with his bare fists…
‘There has been no execution in our country since 1997. Shouldn’t someone be doing it?’
Death Row Boy has finished publishing and it has 74 Chapters. It is also Known as: Смертник, เด็กหนุ่มผู้ลงทัณฑ์, 死刑少年
4. Kusuriya no Hitorigoto: Maomao no Koukyuu Nazotoki Techou

In the imperial court, a young woman is put into servitude, Maomao. The tale is just beginning for the woman doctor/pharmacist from the red-light district, as rumors circulate about the emperor's children's lives being short-lived. Her curious nature and thirst for knowledge pushes her to action. To satisfy her curiosity, this young doctor/pharmacist will investigate the origin! What is shifting in the imperial court..!?
Kusuriya no Hitorigoto: Maomao no Koukyuu Nazotoki Techou is currently publishing and has Chapters. It is also Known as: 薬屋のひとりごと 猫猫の後宮謎解き手帳, Kusuriya no Hitorigoto: Maomao no Koukyuu Nazotoki Techou
3. Tantei wa Mou, Shindeiru.

The story of Tantei wa Mou, Shindeiru. follows Kimihiko Kimizuka, a young man who four years ago became the assistant of a mysterious detective known as "Siesta" on a hijacked airplane. Together, Kimihiko and Siesta went on mind-boggling, globe-trotting adventures while combatting a secret organization, but all of that came to an end when they were separated by Siesta's death. In the present day, Kimihiko tries to return to an ordinary, boring life as a high school student, but things are never that simple, even though the detective is already dead.
The Detective is Already Dead is currently publishing and has Chapters. It is also Known as: 探偵はもう、死んでいる。, La Detective Está Muerta.
2. Kusuriya no Hitorigoto

In the East is a land ruled by an emperor, whose consorts and serving women live in a sprawling complex known as the hougong, the rear palace. Maomao, an unassuming girl raised in an unassuming town by her apothecary father, never imagined the rear palace would have anything to do with her—until she was kidnapped and sold into service there.Though she looks ordinary, Maomao has a quick wit, a sharp mind, and an extensive knowledge of medicine. That's her secret, until she encounters a resident of the palace at least as perceptive as she is: the head eunuch, Jinshi. He sees through Maomao's façade and makes her a lady-in-waiting to none other than the Emperor's favorite consort... so she can taste the lady's food for poison!
The Apothecary Diaries is currently publishing and has Chapters. It is also Known as: 薬屋のひとりごと, The Pharmacist's Monologue
1. Kusuriya no Hitorigoto

In the imperial court, a young woman is put into servitude, Maomao. The tale is just beginning for the woman doctor/pharmacist from the red-light district, as rumors circulate about the emperor's children's lives being short-lived. Her curious nature and thirst for knowledge pushes her to action. To satisfy her curiosity, this young doctor/pharmacist will investigate the origin! What is shifting in the imperial court..!?
The Apothecary Diaries is currently publishing and has Chapters. It is also Known as: 薬屋のひとりごと, The Pharmacist's Monologue, The Pharmacist's Soliloquies, Drugstore Soliloquy