| The Dinner Table Detective | |
 First novel volume cover, featuring (from top to bottom) Kageyama, Reiko Hosho, and Kyoichiro Kazamatsuri | |
| 謎解きはディナーのあとで (Nazotoki wa Dinā no Ato de) | |
|---|---|
| Genre | Mystery[1] |
| Novel series | |
| Written by | Tokuya Higashigawa |
| Illustrated by | Yūsuke Nakamura |
| Published by | Shogakukan |
| Original run | September 2, 2010 –December 12, 2012 |
| Volumes | 3 |
| Manga | |
| Written by | Tokuya Higashigawa |
| Illustrated by | Aya Kawase |
| Published by | Shogakukan |
| Imprint | Flowers Comics α |
| Magazine | Petit Comic |
| Original run | April 8, 2011 –November 10, 2011 |
| Volumes | 2 |
| Novel series | |
| Shin Nazotoki wa Dinner no Ato de | |
| Written by | Tokuya Higashigawa |
| Illustrated by | Yūsuke Nakamura |
| Published by | Shogakukan |
| Original run | March 31, 2021 –September 18, 2024 |
| Volumes | 2 |
| Anime television series | |
| Directed by | Mitsuyuki Masuhara |
| Written by | Mariko Kunisawa |
| Music by | Takeshi Hama |
| Studio | Madhouse |
| Licensed by | Amazon Prime Video |
| Original network | FNS (Fuji TV) |
| Original run | April 4, 2025 – June 20, 2025 |
| Episodes | 12 (15 segments) |
| Television drama | |
| |
 Anime and manga portal | |
The Dinner Table Detective (謎解きはディナーのあとで,Nazotoki wa Dinā no Ato de; lit. "The After-Dinner Mysteries") is a Japanesemystery novel series written by Tokuya Higashigawa and illustrated by Yūsuke Nakamura.Shogakukan have published three volumes from September 2010 to December 2012. Amanga adaptation illustrated by Aya Kawase was serialized in Shogakukan'sjosei manga magazinePetit Comic from April to November 2011, with its chapters collected into twotankōbon volumes. A sequel novel series by the same author and illustrator, titledShin Nazotoki wa Dinner no Ato de, was published by Shogakukan in two volumes from March 2021 to September 2024.
A 10-episodetelevision drama adaptation aired from October to December 2011 onFuji TV and its affiliates. Ananime television series adaptation produced byMadhouse aired from April to June 2025 on the same television network'sNoitamina programming block.
Reiko Hosho, a wealthy heiress of the Hosho Group, secretly works as a rookie detective for the Kunitachi Police Department under Inspector Kyoichiro Kazamatsuri, who himself is the heir of Kazamatsuri Motors. At home, Reiko wears an elegant dress while she eats dinner. Whenever she seeks advice from her butler Kageyama concerning a difficult case, he questions her inability to solve mysteries before he proceeds to figure it out for her.
| No. | Release date | ISBN |
|---|---|---|
| 1 | September 2, 2010[5] | 978-4-09-386280-6 |
| 2 | November 10, 2011[6] | 978-4-09-386316-2 |
| 3 | December 12, 2012[7] | 978-4-09-386347-6 |
| No. | Release date | ISBN |
|---|---|---|
| 1 | March 31, 2021[8] | 978-4-09-386608-8 |
| 2 | September 18, 2024[9] | 978-4-09-386735-1 |
| No. | Release date | ISBN |
|---|---|---|
| 1 | November 10, 2011[10] | 978-4-09-134168-6 |
| 2 | August 9, 2012[11] | 978-4-09-134609-4 |
Astage play adaptation ran at The Galaxy Theatre inTokyo from August 31 to September 9, 2012. It starredDaigo as Kageyama,Maki Nishiyama as Reiko, andEiji Wentz as Kazamatsuri.[12]
A musical adaptation was announced in June 2025, which ran at theNippon Seinenkan in Tokyo from September 9 to September 23, 2025,[13][14] and at the Sky Theater MBS inOsaka from September 27 to October 1 of the same year.[15] It starredTatsuya Ueda as Kageyama,Shiori Tamai as Reiko, andRyosuke Hashimoto as Kazamatsuri.[13]
Ananime television series adaptation was announced on November 25, 2024.[1][16] It was produced byMadhouse and directed byMitsuyuki Masuhara, with series composition by Mariko Kunisawa (with Masuhara co-writing Episodes 5B and 6), original character designs by Oreco Tachibana, animation character designs by Izumi Kawada and music composed by Takeshi Hama. The series aired from April 4 to June 20, 2025, on theNoitamina programming block on allFNS affiliates, includingFuji TV.[2][17][18] The opening theme song is "Montage", composed byHiroyuki Sawano and performed byKento Nakajima,[19] while the ending theme song is "Rhapsody", performed by Billy Boo.Amazon Prime Video is streaming the series worldwide.[20]
| No. | Title [21][22] | Directed by [a] | Storyboarded by [a] | Animation directed by [a] | Original release date [23] |
|---|---|---|---|---|---|
| 1 | "Welcome to the murderous party File 1" Transliteration: "Satsui no Pāti ni Yōkoso File 1" (Japanese:殺意のパーティにようこそ File 1) | Masaki Matsumura | Mitsuyuki Masuhara | Masaki Hinata Izumi Kawada (chief) | April 4, 2025 (2025-04-04) |
| 2 | "Welcome to the murderous party File 2" Transliteration: "Satsui no Pāti ni Yōkoso File 2" (Japanese:殺意のパーティにようこそ File 2) | Masaki Matsumura | Mitsuyuki Masuhara | Soonyoung Seo, Han Eun-mi, Bongdeok Kim & Jinyoung Jeong Izumi Kawada & Takashi Muratani (chief) | April 11, 2025 (2025-04-11) |
| "Here's a message from the dead File 1" Transliteration: "Shisha Kara no Dengon o Dōzo File 1" (Japanese:死者からの伝言をどうぞ File 1) | Tohru Ishida & Park Sihoo | Kenichi Shimizu | |||
| 3 | "Here's a message from the dead File 2" Transliteration: "Shisha Kara no Dengon o Dōzo File 2" (Japanese:死者からの伝言をどうぞ File 2) | Tohru Ishida, Yang Jeong-hee & Soonyoung Seo | Kenichi Shimizu | Han Eun-mi, Song Hyeon-ju, Mubon Hyung-jun, Jeong Ji-moon & Ha Yeon Jeong Izumi Kawada & Takashi Muratani (chief) | April 18, 2025 (2025-04-18) |
| 4 | "Please be aware of two-timing affairs File 1" Transliteration: "Futamata ni Hao Kiwotsuke Kudasai File 1" (Japanese:二股にはお気をつけください File 1) | Yuuki Morishita | Yuuki Morishita & Aiko Wakatsuki | Yoshiko Shimizu, Nana Yamaguchi & Mayu Murakata Izumi Kawada (chief) | April 25, 2025 (2025-04-25) |
| 5 | "Please be aware of two-timing affairs File 2" Transliteration: "Futamata ni Hao Kiwotsuke Kudasai File 2" (Japanese:二股にはお気をつけください File 2) | Yuuki Morishita | Yuuki Morishita & Aiko Wakatsuki | Airi Takahashi, Yoshiko Shimizu & Kim Jong Nam Izumi Kawada (chief) | May 2, 2025 (2025-05-02) |
| "The person who dropped it is a VTuber File 1" Transliteration: "Otoshinushi wa Vtuber de Gozaimasu File 1" (Japanese:落とし主はVtuberでございます File 1) | Mitsuyuki Masuhara | Mitsuyuki Masuhara | |||
| 6 | "The person who dropped it is a VTuber File 2" Transliteration: "Otoshinushi wa Vtuber de Gozaimasu File 2" (Japanese:落とし主はVtuberでございます File 2) | Mitsuyuki Masuhara | Mitsuyuki Masuhara | Masaki Hinata Izumi Kawada (chief) | May 9, 2025 (2025-05-09) |
| 7 | "There is no such thing as a completely locked room File 1" Transliteration: "Kanzen na Misshitsu Nado Gozaimasen File 1" (Japanese:完全な密室などございません File 1) | Kōki Mori, Hwang Il-jin & Seo Sun-yeong | Tatsuo Sato | Kim Bo-kyoung, Ha Seung-hee, Song Hyun-ju, Yoon Jung-hye, Park Ae-lee, Song Seung-taek, Lee Seung-hee, Song Hyeon-ju, Choi Eun-yeong, Kim Sung-bum & Yoon Seung-hyun Izumi Kawada, Yoshiko Shimizu & Takashi Muratani (chief) | May 16, 2025 (2025-05-16) |
| 8 | "There is no such thing as a completely locked room File 2" Transliteration: "Kanzen na Misshitsu Nado Gozaimasen File 2" (Japanese:完全な密室などございません File 2) | Tatsunori Miyake & Kim Bong-duk | Tatsuo Sato | Kim Bong-duk, Shin Sung-min, Kim Hyun-kyung, Ko Yu-il, Kim Hee-jung, Cho Mi-jung, Park Jae-suk, Hong Da-young & Airi Takahashi Izumi Kawada, Yoshiko Shimizu & Takashi Muratani (chief) | May 23, 2025 (2025-05-23) |
| "Please don't drown in this river File 1" Transliteration: "Kono Kawa de Oborenaide Kudasai File 1" (Japanese:この川で溺れないでください File 1) | Tōru Takahashi & Kim Bong-duk | Koji Sawai | |||
| 9 | "Please don't drown in this river File 2" Transliteration: "Kono Kawa de Oborenaide Kudasai File 2" (Japanese:この川で溺れないでください File 2) | Tōru Takahashi & Gang Tae-sik | Koji Sawai | Han Eun-mi, Kim Ran-yeong, Choi Eun-yeong, Park Yeong-hee, Lee Gyeoung-soon, Park Soo-in, Hong Mi-gyeong & Airi Takahashi Izumi Kawada & Takashi Muratani (chief) | May 30, 2025 (2025-05-30) |
| 10 | "Murder lies in a beautiful rose" Transliteration: "Kireina Bara ni wa Satsui ga Gozaimasu" (Japanese:綺麗な薔薇には殺意がございます) | Shiro Suzuki | Masaki Matsumura | Shiro Suzuki Izumi Kawada (chief) | June 6, 2025 (2025-06-06) |
| 11 | "The bride is behind locked doors" Transliteration: "Hanayome wa Misshitsu no Naka de Gozaimasu" (Japanese:花嫁は密室の中でございます) | Yuuki Morishita | Kazuhiro Soeta | Airi Takahashi, Yoshiko Shimizu, Masaki Hinata, Hiroyuki Kasugai & Mayu Murakata Izumi Kawada (chief) | June 13, 2025 (2025-06-13) |
| 12 | "What is it that you have lost?" Transliteration: "Ubawareta no wa Nani de Gozaimasu ka" (Japanese:奪われたのは何でございますか) | Masaki Matsumura | Masaki Matsumura | Masaki Hinata, Kim Jong Nam, Izumi Kawada, Nana Yamaguchi, Mayu Murakata & Masatsune Noguchi Izumi Kawada (chief) | June 20, 2025 (2025-06-20) |
