Keishichō Bunshō Sōsakan (Book series)

Keishichō Bunshō Sōsakan (警視庁文書捜査官, Metropolitan Police Department Document Investigator) is a Japanese literary series written by Kazushi Asami. Currently, there are 8 volumes in the series.

The series was originally published under Kadokawa Shoten. However, in 2017, it started to be published in Kadokawa Bunko, in a paperback format. Publication then ceased in Shoten, with only two volumes of the series. Since 2017, the newer books are published solely in Bunko.

The first volume of the series received a TV drama adaptation in 2018 by TV Asashi under the title Mikaiketsu no Onna Keishichō Bunshō Sōsakan (未解決の女 警視庁文書捜査官, Women Document Dectectives Metropolitan Police Department Document Investigator). A second season was aired in 2020.

Plot
AAA

Synopsis
A new heroine appears in police novels! Connect the "characters" and the case and approach the criminal's heart.

Tokyo Metropolitan Police Department Investigation Division 1 Document Decoding Group ── Risa Narumi, an assistant police officer who was selected for studying sentence psychology and being recognized for the technique of inferring the birth and personality of the writer from the contents of the document, has her right wrist cut off. Challenge the mysterious murder case.

List of chapters

 * Chapter 1: A (ア, A)

Kadokawa Shoten

 * Full title: Keishichō Bunshō Sōsakan (警視庁文書捜査官, Metropolitan Police Department Document Investigator)
 * Release date: January 30, 2015
 * ISBN: 978-4-04-1019887
 * Page count: 304
 * Price: 1500円 (excluding tax)

Kadokawa Bunko

 * Full title: Keishichō Bunshō Sōsakan (警視庁文書捜査官, Metropolitan Police Department Document Investigator)
 * Release date: January 25, 2017
 * ISBN: 978-4-04-1046197
 * Page count: 336
 * Price: 680円 (excluding tax)

Synopsis
The murder case is just like the fantasy novel. Character enthusiast Risa Narumi approaches the mystery!

A wire-tied corpse was found. Beside, a mysterious blood character. A dispatch order was given to the document decryption team led by Risa Narumi. While Risa focuses on deciphering the dying message, Yashiro, a member of the group, discovers a novel-like sentence in the relics with the newly appointed Natsume. It turned out to be a rare book that was difficult to obtain in a part of the fantasy novel "Permanent Prisoner", and when the original was traced, further murders happened ... Risa, who loves characters, unravels the murder case hidden in the book!

List of chapters

 * Chapter 1: A (ア, A)

Kadokawa Shoten

 * Full title: Eikyū Shūjin Keishichō Bunshō Sōsakan (永久囚人 警視庁文書捜査官, Permanent Prisoner Metropolitan Police Department Document Investigator)
 * Release date: March 25, 2017
 * ISBN: 978-4-04-1046098
 * Page count: 320
 * Price: 1500円 (excluding tax)

Kadokawa Bunko

 * Full title: Eikyū Shūjin Keishichō Bunshō Sōsakan (永久囚人 警視庁文書捜査官, Permanent Prisoner Metropolitan Police Department Document Investigator)
 * Release date: April 25, 2018
 * ISBN: 978-4-04-1069967
 * Page count: 336
 * Price: 680円 (excluding tax)

Synopsis
Character enthusiast detective Risa Narumi, the first case.

Next to the found body, a mysterious red letter was written. Risa Narumi, the chief of the police officer in charge, and Kunikida of the Investigation Division 1 are struggling to decipher the characters "mushi" and "article". Risa's reasoning is clear on the stage of the Metropolitan Police Department before the establishment of the document decoding team!

List of chapters

 * Chapter 1: A (ア, A)

Kodansha Bunko

 * Full title: Hiiro no Signal Keishichō Bunshō Sōsakan Episode Zero (緋色のシグナル 警視庁文書捜査官エピソード・ゼロ, Scarlet Signal Metropolitan Police Department Document Investigator Episode Zero)
 * Release date: January 25, 2018
 * ISBN: 978-4-04-1064542
 * Page count: 304
 * Price: 680円 (excluding tax)

Synopsis
Beside the body, there is a memo with a murder plan written on it. Document enthusiast Risa challenges the mystery!

A memo of a continuous murder plan was found near the body! In addition, a mysterious code was discovered in the remains. Risa Narumi, who leads the Document Decoding Team of the Investigation Division 1, challenges the mystery of memos and cryptography to stop the continuous murder!

List of chapters

 * Chapter 1: A (ア, A)

Kadokawa Bunko

 * Full title: Hai no Wadachi Keishichō Bunshō Sōsakan (灰の轍 警視庁文書捜査官, Ruts of Ash Metropolitan Police Department Document Investigator)
 * Release date: November 25, 2018
 * ISBN: 978-4-04-1074008
 * Page count: 304
 * Price: 680円 (excluding tax)

Synopsis
Document Decoding Team, crisis of disappearance!? The latest issue of the popular drama series

Get the whereabouts of a man involved in a murder and the documents he owns. A confidential order was given to Risa Narumi, the leader of the Document Decoding Team. The only clue is one sighting information. Risa tries her best to clarify the case when she hears that the group is in danger of breaking up!

List of chapters

 * Chapter 1: A (ア, A)

Kadokawa Bunko

 * Full title: Kage no Shatō Keishichō Bunshō Sōsakan (影の斜塔 警視庁文書捜査官, Tower of Shadows Metropolitan Police Department Document Investigator)
 * Release date: April 24, 2019
 * ISBN: 978-4-04-1080481
 * Page count: 320
 * Price: 680円 (excluding tax)

Synopsis
Yashiro leaves the Document Decryption Team- !? The sixth issue in the serial drama's popular police series!

A corpse was found whose face was wrapped in newspaper and whose mouth was stamped with print. A mysterious ciphertext is also found in the victim's home, and Risa and his colleagues begin a document investigation. On the other hand, Yashiro is approached by Director Iwashita to move to the Murder Team...!?

List of chapters

 * Chapter 1: A (ア, A)

Kadokawa Bunko

 * Full title: Gusha no Ori Keishichō Bunshō Sōsakan (愚者の檻 警視庁文書捜査官, Fool's Cage Metropolitan Police Department Document Investigator)
 * Release date: November 21, 2019
 * ISBN: 978-4-04-1088258
 * Page count: 320
 * Price: 680円 (excluding tax)

Synopsis
Uncover the psychology of hijackers from a mysterious game. The 7th issue in the popular police series!

Hijacking occurs on the flight from Sapporo to Haneda! SIT begins negotiations, but the criminal sets up a thought puzzle for some reason. Can Risa and her team decipher the document, answer the unreasonable game correctly and release the hostages!?

List of chapters

 * Chapter 1: A (ア, A)

Kadokawa Bunko

 * Full title: Ginyoku no Shikaku Keishichō Bunshō Sōsakan (銀翼の死角 警視庁文書捜査官, Silvery Wings' Blind Spot Metropolitan Police Department Document Investigator)
 * Release date: May 22, 2020
 * ISBN: 978-4-04-1093092
 * Page count: 368
 * Price: 680円 (excluding tax)

Synopsis
A series of murders along a strange quatrain! The 8th issue in the popular police series.

An unidentified male corpse was found in the soil in Tokyo. A spooky quatrain was left beside it. Risa and the Document Decoding Team begin to investigate the identity of the man and the content suggested by the poem, but one after another, corpses and poems are found ...

List of chapters

 * Chapter 1: A (ア, A)

Kadokawa Bunko

 * Full title: Ibara no Bohyō Keishichō Bunshō Sōsakan (茨の墓標 警視庁文書捜査官, Thorn's Tombstone Metropolitan Police Department Document Investigator)
 * Release date: March 24, 2021
 * ISBN: 978-4-04-1093085
 * Page count: 336
 * Price: 680円 (excluding tax)