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 has finished publishing and it has 29 Chapters. 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.) [2026 List]
5. Tantei Gakuen Q
Detective School Q is the story of a group of young students from Class Q of Dan Detective School (DDS), a prestigious and renowned detective academy founded by Morihiko Dan, the most famous detective in Japan, and the adventures and mysteries they unfold and solve together. They eventually work against Pluto, a mysterious organization which creates almost fool-proof plans that only a handful of detectives can solve.
The story was written under the penname Amagi, Seimaru.
Tantei Gakuen Q has finished publishing and it has 172 Chapters. It is also Known as: 探偵学園Q, Detective Academy Q, Detective School Q
4. 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 has finished publishing and it has 29 Chapters. It is also Known as: 探偵はもう、死んでいる。, La Detective Está Muerta.
3. Kindaichi Shounen no Jikenbo
Kindaichi (frequently with best-bud, Miyuki) travels to various places where a murder has taken place, typically involving ghosts, curses, myths and folklore of significant events from the distant past, and solves the mystery using ingenious deductions of curious clues and his cool magic.
The Kindaichi Case Files: File Series has finished publishing and it has 219 Chapters. It is also Known as: 金田一少年の事件簿, Kindaichi Shonen no Jikenbo
2. If You Touch My Little Brother, You’re All Dead
I became sixteen year old Rosalette. She fell out of bed and when she opened her eyes, she had possessed a character in “Asterion of a Blue Starry Night” a cliche BL novel with passion, fantasy, drama, and angst. Plus, she was Rosalette, the older sister of Asteron. Asteron was the protagonist and the one who committed suicide at the end of the novel. She left herself to go through the flow of events in the story. At the end of that, she went back in time to become sixteen year old Rosalette again. She thought that standing by was what she did wrong, so she raised her younger sibling finely, but she died from an outside force and returned as Rosalette once more. She changed her direction. She indulged in training herself instead of her brother. That didn’t seem to work either. She had learned magic but still returned, and she had lived all the way till her graduation, but still returned. Rosalette Roxburgh who is always returning to her sixteen year old self, is still looking for a way to die indefinitely.
If You Touch My Little Brother, You’re All Dead has finished publishing and it has 74 Chapters. It is also Known as: You're All Dead if You Mess With My Brother, I’ll Kill You All if You Mess With My Brother, If You Mess With My Brother, I Will Kill You, If You Touch My Brother, You're All Dead, If You Dare Lay A Hand On My Little Brother, You’re All Going To Die
1. Danganronpa Gaiden: Killer Killer
In response to The Biggest, Most Awful, Most Tragic Event in Human History, an organization called Future Foundation was created to combat the chaos still present even after the death of The Mastermind. Misaki Asano is a new recruit, working as a special investigator for the 6th Division's Special Case Bureau—a branch dedicated to only the most bizarre and challenging murder cases. Alongside her partner, Takumi Hijirihara, they aim to combat despair one case at a time.
Though, perhaps their most challenging case is that of the mysterious Killer Killer, a bizarre serial killer who chooses to target other murderers.
Danganronpa Gaiden: Killer Killer has finished publishing and it has 14 Chapters. It is also Known as: ダンガンロンパ害伝 キラーキラー, Danganronpa Gaiden: Killer Killer
