Killed Again, Mr. Detective?
Japanese light novel series
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Killed Again, Mr. Detective? (Japanese: また殺されてしまったのですね、探偵様, Hepburn: Mata Korosarete Shimatta no desu ne, Tantei-sama) is a Japanese light novel series written by Teniwoha and illustrated by Riichu. It began publication under Media Factory's MF Bunko J imprint in August 2021, with six volumes published as of November 2025. A manga adaptation illustrated by Inaba was serialized from July 2022 to March 2024, with its chapters collected into two volumes between March 2023 and March 2024. An anime television series adaptation produced by Liden Films premiered in April 2026.
| Killed Again, Mr. Detective? | |
First light novel volume cover | |
| また殺されてしまったのですね、探偵様 (Mata Korosarete Shimatta no desu ne, Tantei-sama) | |
|---|---|
| Genre | Mystery |
| Light novel | |
| Written by | Teniwoha |
| Illustrated by | Riichu |
| Published by | Media Factory |
| Imprint | MF Bunko J |
| Original run | August 25, 2021 – present |
| Volumes | 6 |
| Manga | |
| Written by | Teniwoha |
| Illustrated by | Inaba |
| Published by | Fujimi Shobo |
| English publisher | |
| Imprint | Dragon Comics Age |
| Magazine | Dra Dra Flat |
| Original run | July 7, 2022 – March 7, 2024 |
| Volumes | 2 |
| Anime television series | |
| Directed by | Takashi Naoya |
| Written by | Mio Inoue |
| Music by | Shūhei Mutsuki |
| Studio | Liden Films |
| Licensed by | Crunchyroll |
| Original network | TBS, BS11 |
| Original run | April 3, 2026 – present |
| Episodes | 1 |
Plot
The series follows Sakuya Outsuki, a high school student who works as a detective, aided by his assistant Lilithea. Sakuya has the ability to come back to life after being killed. The series covers Sakuya using his ability and detective skills to solve cases with the help of Lilithea, and their growing relationship.
Characters
- Sakuya Outsuki (追月 朔也, Ōtsuki Sakuya)
- Voiced by: Ryōta Ōsaka (PV),[1] Rikuya Yasuda (anime)[2]
- A high school student who works as a detective. He is the son of Tatsuya Outsuki, a renowned detective known for solving even the most difficult cases. Like his father, he has the ability to bring himself back to life after being killed. Unlike his father, who is known for being involved in high-stakes investigations, Sakuya prefers more mundane cases. He cares about Lilithea, though he's not fully aware of her feelings.
- Lilithea (リリテア, Riritea)
- Voiced by: Ikumi Hasegawa (PV),[1] Shion Wakayama (anime)[2]
- A 16-year-old girl who serves as Sakuya's assistant, helping him with cases. She's a very beautiful girl with a nice figure, silver hair, and purple eyes. She's quite observant and capable at her job, yet tends to give into temptations to have fun while on the job. She cares deeply for Sakuya, and is quite possessive of him, getting jealous when he interacts with other women.
- Yuriu Haigamine (灰ヶ峰 ゆりう, Haigamine Yuriu)
- Voiced by: Yoshino Aoyama[3]
- Kaoruta Sozorogi (漫呂木 薫太, Sozorogi Kaoruta)
- Voiced by: Katsuyuki Konishi[3]
- Shardina Infelicius (シャルディナ・インフェリシャス, Sharudina inferishasu)
- Voiced by: Rie Kugimiya[3]
- Belka Zeppelin (ベルカ・ゼッペリン, Beruka Zepperin)
- Voiced by: Yūki Takada[3]
- Fido (フィド)
- Voiced by: Yūki Takada[3]
Media
Light novel
Written by Teniwoha and illustrated by Riichu, Killed Again, Mr. Detective? is published by Media Factory under their MF Bunko J imprint, with the first volume being released on August 25, 2021.[4] Six volumes have been released as of November 25, 2025.[5]
| No. | Release date | ISBN |
|---|---|---|
| 1 | August 25, 2021[4] | 978-4-04-680699-4 |
| 2 | February 25, 2022[6] | 978-4-04-681183-7 |
| 3 | May 25, 2022[7] | 978-4-04-681411-1 |
| 4 | October 25, 2022[8] | 978-4-04-681750-1 |
| 5 | March 25, 2024[9] | 978-4-04-682447-9 |
| 6 | November 25, 2025[5] | 978-4-04-685444-5 |
Manga
A manga adaptation illustrated by Inaba was serialized on the Niconico and ComicWalker websites under Fujimi Shobo's Dra Dra Flat brand from July 7, 2022, to March 7, 2024.[10][11] Its chapters were collected into two tankōbon volumes between March 9, 2023, and March 8, 2024.[12][13] The manga is licensed in English by Yen Press.[14]
| No. | Original release date | Original ISBN | English release date | English ISBN |
|---|---|---|---|---|
| 1 | March 9, 2023[12] | 978-4-04-074831-3 | August 26, 2025[15] | 979-8-8554-1172-0 |
| 2 | March 8, 2024[13] | 978-4-04-075247-1 | January 20, 2026[16] | 979-8-8554-1174-4 |
Anime
An anime television series adaptation was announced during MF Bunko J's "Fall School Festival 2025" livestream event on November 16, 2025. It is produced by Liden Films and directed by Takashi Naoya, with scripts written by Mio Inoue, characters designed by Akiko Kumada, and music composed by Shūhei Mutsuki. The series premiered on April 3, 2026, on TBS and BS11.[2] The opening theme song is "Stardust Eureka" (スターダスト・エウレカ), performed by Multidimensional Control Mechanism Yodaka,[17] while the ending theme song is "Lilithea no Uta" (リリテアの歌; Lilithea's Song), performed by Shion Wakayama. Crunchyroll is streaming the series.[18]
Episodes
| No. | Title [19][20] | Directed by [a] | Written by [a] | Storyboarded by [a] | Original release date [21][b] | |
|---|---|---|---|---|---|---|
| 1 | "The Queen Irie Murder Case, Part 1" Transliteration: "Kuīn・Airī-gō Satsujin Jiken・Zenpen" (Japanese: クイーン・アイリィ号殺人事件・前編) | TBA | TBA | TBA | April 3, 2026 | |
|
High schooler Sakuya Outsuki works as a private detective with his assistant Lilithea. His famous father, detective Tatsuya, is often absent on high profile investigations whereas Sakuya only takes simple cases, such as his current one involving a cheating husband named Katsuragi. Sakuya and Lilithea follow Katsuragi onto cruise ship Queen Irie, where as a film director he is interviewing actress Haigamine. Sakuya is surprised police detective Sozorogi is also onboard. Unexpectedly, Sakuya encounters Haigamine when she falls through the ceiling of the men's bathroom, having been searching for Katsuragi's missing cat Lulu. She asks Sakuya's help finding Lulu and he agrees, hoping it will help him get close to Katsuragi. As her first major film role is a detective Haigamine asks Sakuya's help preparing for the role. Searching for Lulu in the cargo hold Sakuya finds the dead body of a man Katsuragi had spoken with earlier. While searching the man's phone Sakuya is stabbed by someone dressed as a clown, who leaves with the phone. Having bled to death Sakuya suddenly comes back to life in Lilithea's arms, who scolds him for getting himself killed again. | ||||||
| 2 | "The Queen Irie Murder Case, Part 2" Transliteration: "Kuīn・Airī-gō Satsujin Jiken・Kōhen" (Japanese: クイーン・アイリィ号殺人事件・後編) | TBA | TBA | TBA | April 10, 2026[c] | |
|
It is revealed through unknown mean Sakuya always comes back to life, as does his father Tatsuya. Lilithea reveals the other dead man is Nejihiko, and his family believe Sakuya and Nejihiko killed each other. To keep his ability hidden Lilithea claims she revived Sakuya with CPR. To clear his name Sakuya meets Sozorogi and Nejihiko's family; rich father Kashihiko, mother Wako, brother Amahiko and young niece Miko, who are convinced by the evidence Sakuya did not murder Nejihiko. Haigamine calls Sakuya with news she found Lulu, who has a camera on her collar. Realising the camera recorded Najihiko's murder, Sakuya saves Haigamine from the clown. Lilithea apprehends the clown, who turns out to be Wako. Lulu's collar reveals Nejihiko found evidence Kashihiko was selling drugs through the family sweet factory and planned to tell the police, so Wako killed him. Sakuya declares both his cases solved, since he also discovered Katsuragi was not having an affair, but was spending sums of money trying to make Lulu famous on social media, which he kept hidden from his wife. A passenger plane suddenly crashes into the ship, which Sakuya recognises as a plane that had been hijacked, a plane his father Tatsuya was on. Sakuya races into the flames where a sinister figure suggests Tatsuya is gone and won't be coming back to life. | ||||||
| 3 | "Murder at the Crimson Theater" Transliteration: "Kurimuzon・Shiatā no Satsujin" (Japanese: クリムゾン・シアターの殺人) | TBA | TBA | TBA | April 17, 2026 | |
|
Sakuya is invited to Haigamine’s movie at the Crimson Theatre. Sozorogi asks Sakuya not to interfere in the plane crash investigation, but Sakuya already knows it was caused by Seven Old Men, the most notorious criminals Tatsuya ever caught. During the movie, Sakuya is injected with poison. After he resurrects Sakuya quietly confronts a man named Natsume of attacking him by mistake, because Sakuya was sat in the seat reserved for director Toriho Hiichi. Natsume admits he wants the film cancelled because in one scene's background he was accidentally filmed on a date with Yanai Yuuka, an actress, and if their relationship is exposed her career is over. Sakuya offers to have Yuuka credited as a guest star, so her appearance won't seem suspicious. After Natsume leaves Sakuya is shocked to encounter Chardina Infelicious, one of the Seven Old Men known as "Celebrity" for her limitless wealth. While she doesn't admit to being involved with Tatsuya's death, she is glad he is gone. Despite the police waiting for her, Chardina reveals she has purchased every street between the theatre and airport, so without a warrant the police can't enter her private property to arrest her. Before leaving, she warns Sakuya to beware of Y Derringer a.k.a "Empress", and then blows up the police cars. | ||||||
| 4 | "The Kowloon Hotel Murder, Part 1" Transliteration: "Kūronzu・Hoteru no Satsujin Oni・Zenpen" (Japanese: クーロンズ・ホテルの殺人鬼・前編) | TBA | TBA | TBA | April 24, 2026 | |
|
Sakuya and Lilithea spend the night at Kowloon Hotel, courtesy of a woman Sakuya knows from a previous case, Iriya, a relative of the owner. Haigamine is also present as her movie’s sequel is being filmed at Kowloon. Sozorogi reveals a threatening letter was sent to Toriho by someone called Dog’s Head Bellboy. Chou, the Kowloon’s owner, demands they never talk about Bellboy. Shirasagi, a stuntman for the film, has dreams of being a director. Haigamine’s agent, Nakuji, resents Sakuya being involved. Sakuya notices a calligraphy of the Iron Law behind the front desk, from when the Kowloon was operated by a criminal syndicate. The law warns traitors will be eaten by dragons, those who interfere will be burned by a Phoenix, the greedy shall drown and the impudent be clawed by tigers. Manga author Kanashino reveals 20 years ago a man who betrayed the Syndicate was murdered at Kowloon along with his family, though the murderer was arrested. After that, four guardian deity statues were placed around Kowloon to ward off evil. Sakuya spots Bellboy with a severed head in a bag. Bellboy stabs Sakuya for "disgracing the Celestial Maiden". Sakuya resurrects and learns the head was Nakuji, and after Sakuya died Bellboy stuffed the head into the mouth of the dragon guardian deity. | ||||||
| 5 | "The Kowloon Hotel Murder, Part 2" Transliteration: "Kūronzu・Hoteru no Satsujin Oni・Kōhen" (Japanese: クーロンズ・ホテルの殺人鬼・後編) | TBA | TBA | TBA | May 1, 2026 | |
Reception
Rebecca Silverman, writing for Anime News Network, reviewed the first volume of the manga. She praised how the manga completed the murder case within a single volume, as well as Sakuya's characterization. However, she questioned Lilithea's characterization, describing her as too robotic and quirky rather than being fleshed out more. She also criticized the supporting character Yuriu as slowing down the pacing. She concluded by saying that while the volume was fun to follow, it was not a must-buy.[23]
See also
- The Vexations of a Shut-In Vampire Princess, another light novel series illustrated by Riichu
Notes
- Production staff information is taken from the ending credits of each episode.
- Due to the broadcast of the 2026 Masters Tournament, this episode aired at 3:27 a.m. JST, 1 hour and 29 minutes after the original air time on TBS.[22]