View source for Keishichou Sousa Ichikachou

{{customTOC|Season 1|Season 2|Season 3|Special 1|Special 2|Special 3|Special 4|Special 5|Special 6|Special 7|Special 8|Season 4|Season 5|Season 6}}

==Details==
*'''Title:''' 警視庁・捜査一課長
*'''Title (romaji):''' Keishichou Sousa Ichikachou
*'''Also known as:''' Tokyo MPD - From ZERO to HERO
*'''Genre:''' Crime, Mystery, Investigation
*'''Broadcast network:''' TV Asahi

==Synopsis==
{{nosynopsis}}

===User/Viewer Ratings===
<vote type=1/>

==Season 1==
[[File:Keishichou Sousa Ichikachou.jpg|thumb|300px|Keishichou Sousa Ichikachou]]
*'''Format:''' Renzoku
*'''Episodes:''' 11
*'''Viewership ratings:''' 10.60%
*'''Broadcast period:''' 2016-Apr-14 to 2016-Jun-23
*'''Air time:''' Thursday 20:00
*'''Theme song:''' ''STAGE'' by KOBUKURO

===Cast===
*[[Naitou Takashi]] as Oiwa Junichi
*[[Saito Yuki]] as Hirai Makoto
*[[Kaneda Akio]] as Oyamada Daisuke
*[[Suzuki Hiroki (1983)|Suzuki Hiroki]] as Amagasa Kazuma
*[[Yano Kouji]] as Muto Hiroki
*[[Honda Hirotaro]] as Sasagawa Takeshi
*[[Tokoshima Yoshiko]] as Oiwa Koharu
*[[Tanaka Keizo]] as Tachibana Hiroshi (ep1)
*[[Daike Yuko]] as Umeda Mitsuko (ep6)
*[[Totani Kimito]] as Takachi Shinsuke (ep6)

===Production Credits===
*'''Screenwriter:''' [[Ishihara Bull]]
*'''General Producer:''' [[Seki Takuya]]
*'''Producer:''' [[Akiyama Takahito]], [[Shimada Kaoru]]
*'''Director:''' [[Inohara Tatsuzo]], [[Hama Tatsuya]] (濱龍也)
*'''Music:''' [[Yamamoto Sayaka (composer)|Yamamoto Sayaka]] (山本清香)

==Season 2==
[[File:Keishichou Sousa Ichikachou Season 2.jpg|thumb|300px|Keishichou Sousa Ichikachou (Season 2)]]
*'''Format:''' Renzoku
*'''Episodes:''' 10
*'''Viewership ratings:''' 12.50%
*'''Broadcast period:''' 2017-Apr-13 to 2017-Jun-22
*'''Air time:''' Thursday 20:00
*'''Theme song:''' ''Utsukushii Toge'' by GLIM SPANKY

===Cast===
*[[Naitou Takashi]] as Oiwa Junichi
*[[Tanaka Kei (1984)|Tanaka Kei]] as Gyobu Kouhei
*[[Tokoshima Yoshiko]] as Oiwa Koharu
*[[Honda Hirotaro]] as Sasagawa Takeshi
*[[Yano Kouji]] as Muto Hiroki
*[[Suzuki Hiroki (1983)|Suzuki Hiroki]] as Amagasa Kazuma
*[[Kaneda Akio]] as Oyamada Daisuke
*[[Saito Yuki]] as Hirai Makoto

;Guests
*[[Koike Yui]] as Aikawa Yui (ep4)
*[[Fernandez Naoyuki]] (ep6)
*[[Osamura Koki]] as young Oiwa Junichi (ep10)

===Production Credits===
*'''Screenwriter:''' [[Yasui Kuniho]] (安井国穂)
*'''General Producer:''' [[Seki Takuya]]
*'''Producer:''' [[Akiyama Takahito]], [[Shimada Kaoru]], [[Takagi Keita]] (高木敬太)
*'''Director:''' [[Hama Tatsuya]] (濱龍也)
*'''Music:''' [[Yamamoto Sayaka (composer)|Yamamoto Sayaka]] (山本清香)

==Season 3==
[[File:Keishichou Sousa Ichikachou Season 3.jpg|thumb|200px|Keishichou Sousa Ichikachou (Season 3)]]
*'''Format:''' Renzoku
*'''Episodes:''' 10
*'''Viewership ratings:''' 12.80%
*'''Broadcast period:''' 2018-Apr-12 to 2018-Jun-14
*'''Air time:''' Thursday 20:00
*'''Theme song:''' ''All Of Us'' by GLIM SPANKY

===Cast===
*[[Naitou Takashi]] as Oiwa Junichi
*[[Adachi Yumi]] as Yanaka Monaka
*[[Honda Hirotaro]] as Sasagawa Takeshi
*[[Yano Kouji]] as Muto Hiroki
*[[Suzuki Hiroki (1983)|Suzuki Hiroki]] as Amagasa Kazuma
*[[Hanawa Nobuyuki]] as Okuno Chikamichi
*[[Tokoshima Yoshiko]] as Oiwa Koharu
*[[Kaneda Akio]] as Oyamada Daisuke

===Production Credits===
*'''Screenwriter:''' [[Yasui Kuniho]] (安井国穂), [[Tanabe Mitsuru]], [[Taniguchi Junichiro]]
*'''General Producer:''' [[Seki Takuya]]
*'''Producer:''' [[Akiyama Takahito]], [[Shimada Kaoru]], [[Takagi Keita]] (高木敬太)
*'''Director:''' [[Hama Tatsuya]] (濱龍也), [[Ikezawa Tatsuya]]
*'''Music:''' [[Yamamoto Sayaka (composer)|Yamamoto Sayaka]] (山本清香)

==Special 1==
*'''Format:''' Tanpatsu
*'''Broadcast date:''' 2018-Jul-15
*'''Air time:''' Sunday 21:00
*'''Theme song:''' ''All Of Us'' by GLIM SPANKY

===Cast===
{{multicolumntext}}
*[[Naitou Takashi]] as Oiwa Junichi
*[[Honda Hirotaro]] as Sasagawa Takeshi
*[[Yano Kouji]] as Muto Hiroki
*[[Suzuki Hiroki (1983)|Suzuki Hiroki]] as Amagasa Kazuma
*[[Hanawa Nobuyuki]] as Okuno Chikamichi
*[[Tokoshima Yoshiko]] as Oiwa Koharu
*[[Kaneda Akio]] as Oyamada Daisuke
*[[Miyazaki Yoshiko]] as Takai Chiyoko
*[[Yamamoto Yoko]] (山本陽子) as Sakakida Tomiko
*[[Ashina Sei]] as Sakakida Maho
**[[Kawada Aki]] as young Maho
*[[Asaoka Megumi]] as Ashizawa Naomi
{{multicolumn-end}}

===Production Credits===
*'''Screenwriter:''' [[Yasui Kuniho]] (安井国穂), [[Aoki Erika]]
*'''General Producer:''' [[Seki Takuya]]
*'''Producer:''' [[Akiyama Takahito]], [[Shimada Kaoru]], [[Takagi Keita]] (高木敬太)
*'''Director:''' [[Ikezawa Tatsuya]]
*'''Music:''' [[Yamamoto Sayaka (composer)|Yamamoto Sayaka]] (山本清香)

==Special 2==
*'''Format:''' Tanpatsu
*'''Broadcast date:''' 2019-Jan-06
*'''Air time:''' Sunday 21:00
*'''Theme song:''' ''Looking For The Magic'' by GLIM SPANKY

===Cast===
{{multicolumntext}}
*[[Naitou Takashi]] as Oiwa Junichi
*[[Honda Hirotaro]] as Sasagawa Takeshi
*[[Yano Kouji]] as Muto Hiroki
*[[Suzuki Hiroki (1983)|Suzuki Hiroki]] as Amagasa Kazuma
*[[Hanawa Nobuyuki]] as Okuno Chikamichi
*[[Tokoshima Yoshiko]] as Oiwa Koharu
*[[Kaneda Akio]] as Oyamada Daisuke
*[[Tanaka Misako]] as Baba Roa
*[[Manda Hisako]] as Himebara Chihiro
*[[Koichi Mantaro]] as Oikawa Ryuzo
*[[Hayashi Yasufumi]] as Suginuma Yasushi
{{multicolumn-end}}

===Production Credits===
*'''Screenwriter:''' [[Fukasawa Masaki]]
*'''General Producer:''' [[Seki Takuya]]
*'''Producer:''' [[Akiyama Takahito]], [[Shimada Kaoru]], [[Takagi Keita]] (高木敬太)
*'''Director:''' [[Ikezawa Tatsuya]]
*'''Music:''' [[Yamamoto Sayaka (composer)|Yamamoto Sayaka]] (山本清香)

==Special 3==
*'''Format:''' Tanpatsu
*'''Broadcast date:''' 2019-Apr-21
*'''Air time:''' Sunday 21:00
*'''Theme song:''' ''Looking For The Magic'' by GLIM SPANKY

===Cast===
{{multicolumntext}}
*[[Naitou Takashi]] as Oiwa Junichi
*[[Honda Hirotaro]] as Sasagawa Takeshi
*[[Yano Kouji]] as Muto Hiroki
*[[Suzuki Hiroki (1983)|Suzuki Hiroki]] as Amagasa Kazuma
*[[Tsuchiya Nobuyuki]] (土屋伸之) as Yaho Kensaku
*[[Hanawa Nobuyuki]] as Okuno Chikamichi
*[[Tokoshima Yoshiko]] as Oiwa Koharu
*[[Kaneda Akio]] as Oyamada Daisuke
*[[Suzuki Sarina]] as Kanbayashi Yoko
*[[Yokoyama Megumi]] as Sato Mizuha
*[[Yamamura Momiji]] as Hirota Sakurako
*[[Packun]] (パックン) as Oliver Smith
*[[Miyazaki Yoshiko]] as Takai Chiyoko
{{multicolumn-end}}

===Production Credits===
*'''Screenwriter:''' [[Yasui Kuniho]] (安井国穂)
*'''General Producer:''' [[Seki Takuya]]
*'''Producer:''' [[Akiyama Takahito]], [[Shimada Kaoru]]
*'''Director:''' [[Ikezawa Tatsuya]]
*'''Music:''' [[Yamamoto Sayaka (composer)|Yamamoto Sayaka]] (山本清香)

==Special 4==
*'''Format:''' Tanpatsu
*'''Broadcast date:''' 2019-Jul-07
*'''Air time:''' Sunday 21:00
*'''Theme song:''' ''Tiny Bird'' by GLIM SPANKY

===Cast===
{{multicolumntext}}
*[[Naitou Takashi]] as Oiwa Junichi
*[[Honda Hirotaro]] as Sasagawa Takeshi
*[[Yano Kouji]] as Muto Hiroki
*[[Suzuki Hiroki (1983)|Suzuki Hiroki]] as Amagasa Kazuma
*[[Hanawa Nobuyuki]] as Okuno Chikamichi
*[[Tokoshima Yoshiko]] as Oiwa Koharu
*[[Kaneda Akio]] as Oyamada Daisuke
*[[Dan Mitsu]] as Unno Washiko
*[[Tanimura Mitsuki]] as Ikemoto Natsuki
*[[Kuroda Fukumi]] as Namoka Motoko
*[[Musaka Naomasa]] as Ayuhara Kazufumi
*[[Hamaguchi Masaru]] as Sendo Tetsumasa
{{multicolumn-end}}

===Production Credits===
*'''Screenwriter:''' [[Fukasawa Masaki]]
*'''General Producer:''' [[Seki Takuya]]
*'''Producer:''' [[Akiyama Takahito]], [[Shimada Kaoru]]
*'''Director:''' [[Hama Tatsuya]] (濱龍也)
*'''Music:''' [[Yamamoto Sayaka (composer)|Yamamoto Sayaka]] (山本清香)

==Special 5==
*'''Format:''' Tanpatsu
*'''Broadcast date:''' 2019-Jul-14
*'''Air time:''' Sunday 21:00
*'''Theme song:''' ''Tiny Bird'' by GLIM SPANKY

===Cast===
{{multicolumntext}}
*[[Naitou Takashi]] as Oiwa Junichi
*[[Honda Hirotaro]] as Sasagawa Takeshi
*[[Yano Kouji]] as Muto Hiroki
*[[Suzuki Hiroki (1983)|Suzuki Hiroki]] as Amagasa Kazuma
*[[Hanawa Nobuyuki]] as Okuno Chikamichi
*[[Tokoshima Yoshiko]] as Oiwa Koharu
*[[Kaneda Akio]] as Oyamada Daisuke
*[[Yamamoto Maika]] as Ogura Yasuko
**[[Goto Yuira]] as young Yasuko
*[[Henmi Emiri]] as Haba Iori
*[[Sano Shiro]] as Kuroki Akira
*[[Kondo Yoshimasa]] as Hoshiyama Teruhiko
*[[Oji Megumi]] as Usui Sachiko
*[[Ohuchi Atsuwo]] as Bando Yohei
*[[Dan Mitsu]] as Unno Washiko
{{multicolumn-end}}

===Production Credits===
*'''Screenwriter:''' [[Shigeta Hirota]] (茂田模太)
*'''General Producer:''' [[Seki Takuya]]
*'''Producer:''' [[Akiyama Takahito]], [[Shimada Kaoru]]
*'''Director:''' [[Kikawa Manabu]] (木川学)
*'''Music:''' [[Yamamoto Sayaka (composer)|Yamamoto Sayaka]] (山本清香)

==Special 6==
*'''Format:''' Tanpatsu
*'''Broadcast date:''' 2019-Oct-13
*'''Air time:''' Sunday 21:00
*'''Theme song:''' ''Tiny Bird'' by GLIM SPANKY

===Cast===
{{multicolumntext}}
*[[Naitou Takashi]] as Oiwa Junichi
*[[Honda Hirotaro]] as Sasagawa Takeshi
*[[Yano Kouji]] as Muto Hiroki
*[[Suzuki Hiroki (1983)|Suzuki Hiroki]] as Amagasa Kazuma
*[[Hanawa Nobuyuki]] as Okuno Chikamichi
*[[Tokoshima Yoshiko]] as Oiwa Koharu
*[[Kaneda Akio]] as Oyamada Daisuke
*[[Otoha]] as Sumura Junko
**[[Komine Mitsuki]] (小峰碧月) as young Junko
*[[Hinagata Akiko]] as Gotenyama Satomi
**[[Ayuba Sarasa]] (阿由葉さら紗) as young Satomi
*[[Asano Kazuyuki]] as Nabehara Kikuo
*[[Kato Rie]] (加藤理恵) as Mizunuma Chie
*[[Nakajima Hiroko]] as Muranaka Ayano
*[[Hamaguchi Kyoko]] (浜口京子) as Kisoda Renko
{{multicolumn-end}}

===Production Credits===
*'''Screenwriter:''' [[Fukasawa Masaki]]
*'''General Producer:''' [[Seki Takuya]]
*'''Producer:''' [[Akiyama Takahito]], [[Shimada Kaoru]]
*'''Director:''' [[Hama Tatsuya]] (濱龍也)
*'''Music:''' [[Yamamoto Sayaka (composer)|Yamamoto Sayaka]] (山本清香)

==Special 7==
*'''Format:''' Tanpatsu
*'''Broadcast date:''' 2019-Dec-15
*'''Air time:''' Sunday 21:00
*'''Theme song:''' ''Tiny Bird'' by GLIM SPANKY

===Cast===
{{multicolumntext}}
*[[Naitou Takashi]] as Oiwa Junichi
*[[Honda Hirotaro]] as Sasagawa Takeshi
*[[Yano Kouji]] as Muto Hiroki
*[[Suzuki Hiroki (1983)|Suzuki Hiroki]] as Amagasa Kazuma
*[[Hanawa Nobuyuki]] as Okuno Chikamichi
*[[Tokoshima Yoshiko]] as Oiwa Koharu
*[[Kaneda Akio]] as Oyamada Daisuke
*[[Miyazaki Yoshiko]] as Takai Chiyoko
*[[Toyota Maho]] as Terakado Keiko
*[[Okubo Kayoko]] as Miyazawa Kayo
*[[Omi Toshinori]] as Urushibara Yukitoshi
*[[Asahi Nao]] (朝日奈央) as Sawakita Madoka
*[[Endo Kumiko]] as Ishinami Risa
*[[Horike Kazuki]] as Hirano Keiji
*[[Ohori Koichi]] as Sameshima Hisao
*[[Watanabe Hiroyuki]] as Katagiri Nobumasa
{{multicolumn-end}}

===Production Credits===
*'''Screenwriter:''' [[Fukasawa Masaki]]
*'''General Producer:''' [[Seki Takuya]]
*'''Producer:''' [[Akiyama Takahito]], [[Shimada Kaoru]]
*'''Director:''' [[Hama Tatsuya]] (濱龍也)
*'''Music:''' [[Yamamoto Sayaka (composer)|Yamamoto Sayaka]] (山本清香)

==Special 8==
*'''Format:''' Tanpatsu
*'''Broadcast date:''' 2020-Jan-03
*'''Air time:''' Friday 21:00
*'''Theme song:''' ''Tiny Bird'' by GLIM SPANKY

===Cast===
{{multicolumntext}}
*[[Naitou Takashi]] as Oiwa Junichi
*[[Honda Hirotaro]] as Sasagawa Takeshi
*[[Yano Kouji]] as Muto Hiroki
*[[Suzuki Hiroki (1983)|Suzuki Hiroki]] as Amagasa Kazuma
*[[Tsuchiya Nobuyuki]] (土屋伸之) as Yaho Kensaku
*[[Hanawa Nobuyuki]] as Okuno Chikamichi
*[[Tokoshima Yoshiko]] as Oiwa Koharu
*[[Kaneda Akio]] as Oyamada Daisuke
*[[Ito Ayumi]] as Jinnai Aya
*[[Hasegawa Tomoharu]] as Katakura Yoshihiko
*[[Oura Ryuichi]] as Chikamatsu Yasushi
*[[Aoyama Masaru]] as Sawaki Norifumi
*[[Matsuoka Yumi]] as Minamida Chisato
*[[Katayama Moemi]] as Yasunaga Kotomi
*[[Emi Kurara]] as Susukida Asuka
*[[Ohtsuki Hideyuki]] (大月秀幸) as Aya's father
*[[Miyasaka Tomoko]] (宮坂公子) as Aya's mother
*[[Sawa Homare]] (澤穂希) as Tamaga Tomoyo
*[[Kato Hifumi]] (加藤一二三) as Former Superintendent General
*[[Ameku Michiko]] as Date Maki
*[[Matsumoto Kenya]] (松木研也) as announcer
*[[Abukawa Mihoko]] as reporter
*[[Takagi Keiichi]] (高木慧一) as reporter
*[[Kawazu Hiroaki]] (河津浩滉) as gangster
*[[Narita Michael Rickey]] (成田マイケル理希) as gangster
*[[Sano Yura]] as soccer boy
{{multicolumn-end}}

===Production Credits===
*'''Screenwriter:''' [[Fukasawa Masaki]]
*'''General Producer:''' [[Seki Takuya]]
*'''Producer:''' [[Akiyama Takahito]], [[Zanma Rio]], [[Shimada Kaoru]]
*'''Director:''' [[Hama Tatsuya]] (濱龍也)
*'''Music:''' [[Yamamoto Sayaka (composer)|Yamamoto Sayaka]] (山本清香)

==Season 4==
[[File:Keishichou Sousa Ichikachou 2020.jpg|thumb|200px|Keishichou Sousa Ichikachou 2020]]
*'''Title:''' 警視庁・捜査一課長2020
*'''Title (romaji):''' Keishichou Sousa Ichikachou 2020
*'''Format:''' Renzoku
*'''Episodes:''' 16
*'''Viewership ratings:''' 13.12%
*'''Broadcast period:''' 2020-Apr-09 to 2020-Sep-03
*'''Air time:''' Thursday 20:00
*'''Theme song:''' ''Singin' Now'' by Glim Spanky

===Cast===
*[[Naitou Takashi]] as Oiwa Junichi
*[[Saito Yuki]] as Hirai Makoto
*[[Honda Hirotaro]] as Sasagawa Takeshi
*[[Yano Kouji]] as Mutou Hiroki
*[[Suzuki Hiroki (1983)|Suzuki Hiroki]] as Amagasa Kazuma
*[[Hanawa Nobuyuki]] as Okuno Chikamichi
*[[Tokoshima Yoshiko]] as Oiwa Koharu
*[[Kaneda Akio]] as Oyamada Daisuke
*[[Hizuki Hana]] as Itaki Mochiko
*[[Miyoshi Ayaka]] as Imoo Hagi (ep1)
**[[Michiue Ayumi]] (道上愛弓) as young Hagi (ep1)

====Guests====
{{multicolumntext}}
*[[Matsushita Yuki]] as Imada Miren (ep1)
*[[Yoshimitsu Hiroto]] as Kishiba Ishiki (ep1)
*[[Oda Lisa]] as Imada Aki (ep1)
*[[Kubozuka Shunsuke]] as Sawaya Kaname (ep1)
*[[Seki Futoshi]] (関太) as Teenager (ep1)
*[[Yamamoto Hiroshi]] as Gangster (ep1)
*[[Maeda Nozomi]] (前田希美) as Tsukiiwa Yumeri (ep1)
*[[Ishii Hideaki]] (石井英明) as Imada Sosaku (ep1)
*[[Ikeda Yuki]] (池田侑希) as Detective (ep1)
*[[Shoji Risa (1997)|Shoji Risa]] (東海林里咲) as Kawai Kanna (ep1)
*[[Miyamoto Maki]] as Oka Yasuko (ep1)
*[[Nomaguchi Toru]] as Shinno Tomoya (ep1)
*[[Takeda Rena]] as Ashida Yukiko (ep2) 
*[[Sano Gaku]] as Fukamachi Kazuo (ep2)
*[[Sawai Miyuu]] as Fujitani Yuri (ep2) 
*[[Oozeki Reika]] (大関れいか) as Kamogawa Sakura (ep2)
*[[Yuui Ryoko]] as Yoshiyama Chiaki (ep2)
*[[Sugita Kaoru]] as Kujo Kikuko (ep3)
*[[Ozawa Maju]] as Momoyama Tatsunori (ep3)
*[[Aoyama Megu]] as Kotoda Nanami (ep3)
*[[Tokui Yuu]] as Kamahara Takumi (ep3)
*[[Ozawa Maju]] as Iwanami Kana (ep3)
*[[Nozoe Yoshihiro]] as Tsutsumi Tazo (ep4)
*[[Kurita Yoko]] as Tsutsumi Masuyo (ep4)
*[[Kobayakawa Shunsuke]] (小早川俊輔) as Tsutsumi Yasuharu (ep4)
*[[Mikura Kana]] as Nirasaki Kuniko (ep4)
*[[Obana Kanji]] as Nirasaki Tetsuto (ep4)
*[[Uchida Asahi]] as Mizuta Shuj (ep4)
*[[Ueshima Ryuhei]] as Inomata Kikuto (ep4)
*[[Tsurumachi Ken]] (鶴町憲) as Endo Ryoji (ep4)
*[[Uchida Chika]] as Aozaki Mie (ep5)
*[[Odai Ryohei]] as Haida Tamio (ep5)
*[[Sakai Wakana]] as Akahori Ruriko (ep5)
**[[Niitsu Chise]] as young Ruriko (ep5)
*[[Amamiya Ryo]] (天宮良) as Kurosaka Keiichiro (ep5)
*[[Kobashi Megumi]] as Midorizawa Izumi (ep5)
*[[Sugiura Kotono]] as Chatani Reiko (ep5)
*[[Misaka Chieko]] (三坂知絵子) as Akahori Mitsuko (ep5)
*[[Tsumura Noriyoshi]] as Hibino Saburo (ep6)
**[[Machida Rui]] (町田流唯) as young Saburo (ep6)
*[[Uchida Maaya]] (内田真礼) as Ota Rika (ep6)
*[[Shaku Yumiko]] as Kumaki Takayo (ep6)
*[[Ozaki Shinji]] as Kumagi Noboru (ep6)
*[[Saito Kento]] as Kumaki Teruya (ep6)
*[[Hiruma Yoshinori]] as Morino Shigeto (ep6)
*[[Yoshikawa Katsuo]] (吉川勝雄) as Haneda Station Chief (ep6)
*[[Shinohara Mai]] as Kusamura Aika (ep6)
*[[Kubo Shinichiro]] (久保真一郎) as Higashifusa Naoto (ep6)
*[[Tsukiji Masataka]] (築地まさたか) as Child (ep6)
*[[Matsuda Yoji]] as Komatsubara Shigemitsu (ep7)
*[[Otada Naoki]] (小多田直樹) as Ishimatsu Yukichi (ep7)
*[[Hano Aki]] as Jinseki Risako (ep7)
**[[Ota Yuno]] as young Risako (ep7)
*[[Kiyota Tomohiko]] as Jinseki Reiji (ep7)
*[[Kikuchi Maiko]] as Fukumitsu Hiromi (ep7)
**[[Rina]] (璃菜) as young Hiromi (ep7)
*[[Yamada Meikyo]] as Mikage Kiichiro (ep7)
*[[Oshinari Shugo]] as Kazaoka Kanji (ep7)
**[[Fukunaga Akira]] (福永煌) as young Kanji (ep7)
*[[Kikawada Masaya]] as Matsutomo Shiro (ep8)
*[[Nakajima Arisa]] as Sakate Haruyo (ep8)
*[[Saeki Daichi]] as Kurimiya Rokuro (ep8)
*[[Moriwaki Eriko]] as Katsuya Junko (ep8)
*[[Enako]] (えなこ) as Nishimori Nezuko (ep8)
*[[Yamasaki Hideki]] (山﨑秀樹) as "Kitchen Nagasaki" Shop Owner (ep8)
*[[Seki Takaaki]] (関貴昭) as Sales Manager (ep8)
*[[Morio Yumi]] as Kuramae Fubuki (ep9)
**[[Abe Sae]] (阿部紗英) as young Fubuki (ep9)
*[[Komatsu Toshimasa]] as Karasawa Minya (ep9)
*[[Kurosawa Asuka]] as Ashikaga Tamami (ep9)
*[[Fujita Tom]] as Ninagawa Yoshikazu (ep9)
*[[Konishi Sakurako]] as Niijima Akane (ep9)
*[[Maeno Tomoya]] as Kozakai Tamotsu (ep9)
*[[Gomi Taeko]] (五味多恵子) as Fubuki's Grandmother (ep9)
*[[Nakabeppu Aoi]] as Sumitani Kana (ep10)
*[[Minamisawa Nao]] as Deguchi Riko (ep10)
*[[Watanabe Masayuki]] (渡辺正行) as Matsuno Heikichi (ep10)
*[[Amano Hana]] as Minamikawa Yonemi (ep10)
*[[Ozawa Ryota]] as Fujiga Arashi (ep10)
*[[Makino Rika]] (牧野莉佳) as Karasawa Yoshimi (ep10)
*[[Otake Shusaku]] (大竹周作) as Riko's Superior (ep10)
*[[Katagiri Jin]] as Spice Takeda (ep10)
*[[Asahina Aya]] as Sagisawa Machiko (ep11)
*[[Wakabayashi Hisaya]] as Mukunoki Atsushi (ep11)
*[[Maruyama Rei]] as Torigoe Ayami (ep11)
*[[Kyo Nobuo]] as Michito Naoto (ep11)
*[[Harukaze Hitomi]] as Hatomura Yukie (ep11)
*[[Morisaki Kaira]] (森崎海來) as Hatomura Haruki (ep11)
*[[Shoji Yusuke]] as Kamoshida Shinji (ep11)
*[[Tobayama Bunmei]] (外波山文明) as Tsurunami Kazuki (ep11)
*[[Uematsu Ai]] (植松愛) as Karasuma Yoshimi (ep11)
*[[Kanai Shu]] (かないしゅう) as Karasuma Kinichi (ep11)
*[[Yagyu Miyu]] as Yagi Ayumi (ep12)
*[[Shuhama Harumi]] as Shibukawa Tokiko (ep12)
*[[Inoue Hajime]] as Sameshima Shunzo (ep12)
*[[Yoshimura Ryo]] as Kamagaya Masako (ep12)
*[[Ohta Ayano]] (太田彩乃) as Minowa Shizuka (ep12)
*[[Kugasawa Toru]] as Ebihara Manabu (ep12)
*[[NEO]] (ねお) as Ushida Mou (ep12)
*[[Kato Mitsuru]] as Shipping Company President (ep12)
*[[Mabuchi Erika]] as Anezaki Ikuyo (ep13)
*[[Murakami Shingo (1974)|Murakami Shingo]] as Oji Hakuba (ep13)
*[[Omura Ayako]] as Akita Shiako (ep13)
*[[Kobayashi Ryoko]] as Haikawa Yui (ep13)
*[[Namioka Kazuki]] as Hijiba Izumi (ep14)
*[[Shimizu Kurumi]] as Aiki Yoko (ep14)
*[[Gi Ryoko]] (魏涼子) as Choshi Yoshimi (ep14)
*[[Ito Mamiko]] as Sakura Chieri (ep14)
*[[Mizuki Yuuka]] (水希友香) as Iwase Rona (ep14)
*[[Maruyama Karina]] (丸山桂里奈) as Tamaga Tomomi (ep14)
*[[Matsumoto Wakana]] as Naruki Ruka (ep15)
*[[Kanai Yuta]] as Chikushi Taiyo (ep15)
*[[Ikezu Shoko]] as Ikei Keiko (ep15)
*[[Matsumura Ryunosuke]] (松村龍之介) as Narushima (ep15)
*[[Deguchi Arisa]] (出口亜梨沙) as Wada Shino (ep15)
*[[Nakajima Harumi]] (中島はるみ) as Chikushi Tamae (ep15)
*[[Susuki Miyuki]] (薄幸) as Maman Mayo (ep15)
*[[Asano Yumehiko]] (浅野夢彦) as Amusement park staff (ep15)
*[[Shimazaki Haruka]] as Matsushiro Narumi (ep16)
*[[Kimura Ryo]] as Shirotakara Wataru (ep16)
*[[Torii Miyuki]] (鳥居みゆき) as Nakatoba Michi (ep16)
*[[Komiya Arisa]] as Shiono Kaori (ep16)
*[[Tonesaku Toshihide]] as Nebu Norio (ep16)
*[[Mori Hinami]] as Sonokawa Rika (ep16)
*[[Matsuo Remi]] (松尾レミ) as Udano Matsuko (ep16)
*[[Kamemoto Hiroki]] (亀本寛貴) as Tsuruno Kametaro (ep16)
*[[Murata Reina]] (村田玲奈) as young lady (ep16)
*[[Tsuchiya Nobuyuki]] (土屋伸之) as Yaho Kensaku (ep16)
{{multicolumn-end}}

===Production Credits===
*'''Screenwriter:''' [[Fukasawa Masaki]], [[Tanabe Mitsuru]], [[Abe Sayaka]]
*'''General Producer:''' [[Seki Takuya]]
*'''Producer:''' [[Zanma Rio]], [[Shimada Kaoru]]
*'''Director:''' [[Ikezawa Tatsuya]], [[Kikawa Manabu]] (木川学), [[Hama Tatsuya]] (濱龍也)
*'''Music:''' [[Yamamoto Sayaka (composer)|Yamamoto Sayaka]] (山本清香)

==Season 5==
[[File:Keishichou Sousa Ichikachou 2021.jpg|thumb|200px|Keishichou Sousa Ichikachou (Season 5)]]
*'''Format:''' Renzoku
*'''Episodes:''' 10
*'''Viewership ratings:''' 11.76%
*'''Broadcast period:''' 2021-Apr-08 to 2021-Jun-17
*'''Air time:''' Thursday 20:00
*'''Theme song:''' ''Ayame'' by Ishizaki Huwie

===Cast===
*[[Naitou Takashi]] as Oiwa Junichi
*[[Saito Yuki]] as Hirai Makoto
*[[Honda Hirotaro]] as Sasagawa Takeshi
*[[Suzuki Hiroki (1983)|Suzuki Hiroki]] as Amagasa Kazuma
*[[Iijima Hiroki]] as Kodai Manabu
*[[Hizuki Hana]] as Itaki Mochiko
*[[Hanawa Nobuyuki]] as Okuno Chikamichi
*[[Tokoshima Yoshiko]] as Oiwa Koharu
*[[Kaneda Akio]] as Oyamada Daisuke

====Guests====
{{multicolumntext}}
*[[Ihara Rikka]] as Kirino Riko (ep1)
*[[Tsukuda Norihiko]] as Tange Yaichi (ep2)
*[[Kashima Riku]] as Sakamoto Takumi (ep3)
*[[Kawazoe Noa]] as Hashimoto Yuri (ep3)
*[[Sakai Kazuyoshi]] as Aota Shintaro (ep3)
*[[Kubota Yuki]] as Mizoguchi Shunsuke (ep3)
*[[Tamura Kentaro]] as Takuma Taichi (ep3)
*[[Udo Suzuki]] (ウド鈴木) as detective (ep3)
*[[Iori Moe]] (伊織もえ) as cosplayer (ep3)
*[[Abe Junko]] as Sato Sachiko (ep4)
*[[Kashiwabara Shuji]] as Watarai Kento (ep4)
*[[Sakuragi Rina]] (桜木梨奈) as Ukita Miki (ep4)
*[[Miya Naoko]] as Sato Yoshiko (ep4)
*[[Miura Koichi]] as Sato Satoshi (ep4)
*[[Toyama Yuu]] (遠山雄) as Ando Mitsuo (ep4)
*[[Ahn Mika]] as Yomogida Asuka (ep4)
*[[Ayakannu]] (あやかんぬ) as Sugami Ryoko (ep4)
*[[Kusaka Yu]] (日下有) as Makoto's father (ep4)
*[[Kureyama Kenji]] (呉山賢治) as pizza deliveryman (ep4)
*[[Onishi Ayaka]] as Arakawa Yukiko (ep5)
**[[Fukumine Ichika]] (福峯一華) as young Yukiko (ep5)
*[[Mr. Chin]] (ミスターちん) as Enomoto Hajime (ep5)
*[[Higo Katsuhiro]] (肥後克広) as Shigemori (ep5)
*[[Shinozuka Masaru]] as Arakawa Shoun (ep5)
*[[Inuzuka Masao]] (犬塚マサオ) as Tadano Tomoya (ep5)
*[[Inoue Sakura]] (井上咲楽) as Shimoyama Hiromi (ep5)
*[[Mochizuki Fumio]] (望月章男) as Shimizu (ep5)
*[[Ohara Sakurako]] as Oshino Emi (ep6)
*[[Hirata Yuya]] as Choshi Yoshinori (ep6)
*[[Tsujimoto Kouji]] as Tokiwa Kensei (ep6)
*[[Hasegawa Tity]] as Haba Takuzo (ep6)
*[[Miyashita Kanako]] as Kitai Kanae (ep6)
*[[Kizuki Akari]] (木月あかり) as Hisano Ichika (ep6)
*[[Asou Keitaro]] (麻生敬太郎) as Uda Yoshio (ep6)
*[[Nakamura Yurika]] as Motegi Rinko (ep7)
*[[Irie Jingi]] as Kawamoto Takashi (ep7)
*[[Makabe Togi]] (真壁刀義) as Hibiki Wataru (ep7)
*[[Moriguchi Ayano]] as Kasuga Masami (ep7)
*[[Yakumaru Natsuko]] (薬丸夏子) as Motegi Tatemi (ep7)
*[[Yamaguchi Ryuuou]] (山口竜央) as Uga Tsunao (ep7)
*[[Shibue Joji]] as Otomo Naoto (ep7)
*[[Ida Kunihiko]] as Ishino Tetsuya (ep7)
*[[Haramichan]] (ハラミちゃん) as pianist (ep7)
*[[Igeta Hiroe]] as Tamamori Rei (ep8)
*[[Morita Kanro]] as Umino Haruto (ep8)
*[[Takagi Tomoyuki]] as Totsugi Hotaka (ep8)
*[[Sakanishi Ryota]] (坂西良太) as Tenma Noboru (ep8)
*[[Sato Kumi]] (佐藤玖美) as Mineda Mai (ep8)
*[[Ishizaki Huwie]] (石崎ひゅーい) as Hinata Ishio (ep8)
*[[Kawamura Emiko]] (川村エミコ) as Yoshimoto Hanako (ep8)
*[[Matsumoto Club]] (マツモトクラブ) as Suyama Ryo (ep8)
*[[Yoshida Shiori]] as Yamamura Chitose (ep9)
*[[Terakado Jimon]] (寺門ジモン) as Nishikino Masaru (ep9)
*[[Misaki Rion]] (実咲凜音) as Minowa Sayaka (ep9)
*[[Kagei Hina]] (景井ひな) as Asakawa Yui (ep9)
*[[Takahashi Yu]] as Ando Mie (ep9)
*[[Momotsuki Nashiko]] (桃月なしこ) as Ichihashi Emiri (ep9)
*[[Hirao Jin]] (平尾仁) as Furui Takao (ep9)
*[[Baba Fumika]] as Shimizu Hanae (ep10)
**[[Honpo Kanon]] (本保佳音) as young Hanae (ep10)
*[[Mito Natsume]] as Shinahara Miko (ep10)
*[[Toyama Toshiya]] as Shinahara Homare (ep10)
*[[Yamazaki Yuta]] as Nakatani Gintaro (ep10)
*[[Hikomaro]] (彦摩呂) as Shinkawa Toru (ep10)
*[[Nishinosono Tatsuhiro]] as Saita Toshio (ep10)
*[[Otsubo Akiho]] (大坪あきほ) as Yano Megumi (ep10)
*[[Hayashi Yasufumi]] as Kamishita Shigeru (ep10)
*[[Arno Le Gall]] (アルノ・ルギャル) as Francois Saar (ep10)
*[[Celine Tonus]] (セリーヌ・トヌス) as Hanae's mother (ep10)
*[[Niitora Komei]] (新虎幸明) as detective (ep10)
*[[Rohan Espine]] (ロハン・エスピネ) as security guard (ep10)
{{multicolumn-end}}

===Production Credits===
*'''Screenwriter:''' [[Yasui Kuniho]] (安井国穂), [[Tanabe Mitsuru]]
*'''General Producer:''' [[Seki Takuya]]
*'''Producer:''' [[Akiyama Takahito]], [[Shimada Kaoru]]
*'''Director:''' [[Ikezawa Tatsuya]], [[Kikawa Manabu]] (木川学)
*'''Music:''' [[Yamamoto Sayaka (composer)|Yamamoto Sayaka]] (山本清香)

==Season 6==
[[File:Keishichou Sousa Ichikachou 2022.jpg|thumb|200px|Keishichou Sousa Ichikachou (Season 6)]]
*'''Format:''' Renzoku
*'''Episodes:''' 10
*'''Viewership ratings:''' 9.9%
*'''Broadcast period:''' 2022-Apr-14 to 2022-Jun-16
*'''Air time:''' Thursday 20:00
*'''Theme song:''' ''Hanataba'' by [[Wikipedia:ja:石崎ひゅーい|Ishizaki Huwie]]

===Cast===
*[[Naitou Takashi]] as Oiwa Junichi
*[[Saito Yuki]] as Hirai Makoto
*[[Honda Hirotaro]] as Sasagawa Takeshi
*[[Suzuki Hiroki (1983)|Suzuki Hiroki]] as Amagasa Kazuma
*[[Iijima Hiroki]] as Kodai Manabu
*[[Hizuki Hana]] as Itaki Mochiko
*[[Kikuchi Takashi]] (菊池隆志) as Inoue Kosuke
*[[Hanawa Nobuyuki]] as Okuno Chikamichi
*[[Tokoshima Yoshiko]] as Oiwa Koharu
*[[Kaneda Akio]] as Oyamada Daisuke

====Guests====
{{multicolumntext}}
*[[Machida Shion]] as Tokioka Eruna (ep1-2)
*[[Ito Takaaki]] as Ukai Yorimichi (ep1-2)
*[[Shiraishi Ito]] as Kosugi Takako (ep1-2)
*[[Higa Rino]] (比嘉梨乃) as Shinno Miharu (ep1-2)
*[[Demon Kakka]] (デーモン閣下) as Ikemo Nobuto (ep1-2)
*[[Ishikawa Karen]] as Liu Chou (ep1-2)
*[[Senda Yuta]] (せんだ雄太) as Chono Shigeyuki (ep1-2)
*[[Kote Shinya]] as Tokioka Ken (ep1-2)
*[[Fuji Mariko]] as Fujimi Rion (ep1-2)
*[[Shintani Yuzumi]] as Shinno Haruna (ep1-2,5,10)
**[[Abe Kurea]] as young Haruna (ep1-2)
*[[Hirai Amon]] as Naruo Yuji (ep1-2,5,10)
*[[Tani Maria]] as Kitao Emi (ep3)
*[[Hayashiya Shozo]] (林家正蔵) as Kitao Yasuhisa (ep3)
*[[Okauchi Mikiko]] (岡内美喜子) as Kitao Reiko (ep3)
*[[Komakine Ryusuke]] as Otowa Kimihiko (ep3)
*[[Hirokawa Mitsunori]] (廣川三憲) as Nakahata Keisuke (ep3)
*[[Nishio Mari]] as Ageta Atsuko (ep3)
*[[Idegami Baku]] as Ageta Atsumi (ep3)
*[[Croquette]] (コロッケ) as Ushimoto Takezo (ep3)
*[[Dewi Sukarno]] (デヴィ・カスルノ) as Zaizen Hiromi (ep3)
*[[Sumi Reina]] as Kawakami Mizuki (ep4)
*[[Matsuzawa Kazuyuki]] as Sumida Ryoun (ep4)
*[[Ise Daiki]] (伊勢大貴) as Ashihara Hayato (ep4)
*[[Shimokawa Tomoko]] (下川友子) as Iwanashi Keiko (ep4)
*[[RaMu]] as Aota Wakaba (ep4)
*[[Watanabe Takashi]] (渡辺隆) as detective (ep4)
*[[Hasegawa Masanori]] (長谷川雅紀) as suspect (ep4)
*[[Riko]] as Kota Hayame (ep5)
**[[Isomura Ameri]] as young Hayame (ep5)
*[[Akizuki Mika]] as Yanagishita Miru (ep5)
*[[Fukikoshi Tomomi]] (吹越ともみ) as Akiya Waka (ep5)
*[[Kojima Yoshio]] (小島よしお) as Ohira Hirokazu (ep5)
*[[Iwanaga Hihio]] (岩永ひひお) as Fujizuna Gendo (ep5)
*[[Oochi Hiroki]] as Hayame's father (ep5)
*[[Ayahara Futaba]] (彩原双葉) as Hayame's mother (ep5)
*[[Kato Konatsu]] as Nanai Romi (ep6)
*[[Shinohara Mai]] as Moroboshi Akiko (ep6)
*[[Hamakawa Fumie]] (ハマカワフミエ) as Honjo Shinobu (ep6)
*[[Sota Ryosuke]] as Kataishi Kouya (ep6)
*[[Furumi Hikari]] (古見陽香里) as Izutsu Yuki (ep6)
*[[Miyamoto Maki]] as Udagawa Nai (ep6)
*[[Matsui Airi]] as Tsuchida Ichika (ep7)
*[[Sakai Toshiya]] as Yamabori Kousuke (ep7)
*[[Harumi Shiho]] as Namioka Hideaki (ep7)
*[[Koyanagi Yukimi]] as Tsuchida Ranko (ep7)
*[[Kobayashi Ken]] as Tanimizu Jun (ep7)
*[[Ishikawa Suzuka]] (石川涼楓) as Umino Tsubasa (ep7)
*[[Kikuchi Kouji]] (菊地康二) as Iida Akifumi (ep7)
*[[Sai Katsu]] (才勝) as Morishita Shoji (ep7)
*[[Kanai Shunji]] as Kawase Masatsugu (ep7)
*[[Akimoto Naomi]] as Kawase Tamayo (ep7)
*[[Fujino Ryoko]] as Oyamada Suzume (ep8)
*[[Nagami Rea]] as Yoki Nagisa (ep8)
*[[Onozuka Hayato]] as Yoki Akira (ep8)
*[[Sakata Masanobu]] as Uchikawa Kuranosuke (ep8)
*[[Kodama Norikatsu]] as Nariki Ren (ep8)
*[[Yoshizumi]] (吉住) as Kuramoto Keiko (ep8)
*[[Masuda Akemi]] (増田明美) as Kai Setsuko (ep8)
*[[Imou Haruka]] as Asakura Asami (ep9)
*[[Onoue Hiroyuki]] as Oyamatsu Minoru (ep9)
*[[Matsuda Kenji]] as Kokukoku Shoji's Manager (ep9)
*[[Kijima Asuka]] as Tadano Sorami (ep9)
*[[Maesaka Junpei]] (前坂淳平) as Arai Ryutaro (ep9)
*[[Kitamuki Miyu]] (北向珠夕) as Asashima Nezuko (ep9)
*[[Ogi Naoki]] (尾木直樹) as Nekobayashi Tama (ep9)
*[[Kudo Haruka]] as Akino Kurumi (ep10)
*[[Tatsumi Tomoaki]] (辰巳智秋) as Ibata Yoshinobu (ep10)
*[[Nanase Kou]] as Sonoda Kyoji (ep10)
*[[Asaki Chihiro]] (朝木ちひろ) as Endo Mari (ep10)
*[[Besshi Keiichi]] (別紙慶一) as Mikawa Ryo (ep10)
*[[Shirahane Yuri]] as Sawakita Teruka (ep10)
*[[Shinohara Yushin]] as "Umi no Mori Kujira Show" staff (ep10)
{{multicolumn-end}}

===Production Credits===
*'''Screenwriter:''' [[Tanabe Mitsuru]]
*'''General Producer:''' [[Seki Takuya]]
*'''Producer:''' [[Akiyama Takahito]], [[Shimada Kaoru]]
*'''Director:''' [[Ikezawa Tatsuya]], [[Kikawa Manabu]] (木川学)
*'''Music:''' [[Yamamoto Sayaka (composer)|Yamamoto Sayaka]] (山本清香)

==External Links==
*[https://www.tv-asahi.co.jp/ichikacho1/ Season 1 official site]
*[https://www.tv-asahi.co.jp/ichikacho2/ Season 2 official site]
*[https://www.tv-asahi.co.jp/ichikacho3/ Season 3 official site]
*[https://www.tv-asahi.co.jp/ichikacho2020/ Season 4 official site]
*[https://www.tv-asahi.co.jp/ichikacho5/ Season 5 official site]
*[https://www.tv-asahi.co.jp/ichikacho6/ Season 6 official site]
*[[Wikipedia:ja:警視庁・捜査一課長|Japanese Wikipedia]]

{{SeasonRing|TV Asahi|Season 1|Autumn/Winter 2015|[[Kasouken no Onna#Season 15|Kasouken no Onna 15]]|Summer 2016|[[Onnatachi no Tokusou Saizensen#Season 1|Onnatachi no Tokusou Saizensen]]}}
{{SeasonRing|TV Asahi|Season 2|Autumn/Winter 2016|[[Kasouken no Onna#Season 16|Kasouken no Onna 16]]|Summer 2017|[[Iryu Sousa#Season 4|Iryu Sousa 4]]}}
{{SeasonRing|TV Asahi|Season 3|Autumn/Winter 2017|[[Kasouken no Onna#Season 17|Kasouken no Onna 17]]|Summer 2018|[[Iryu Sousa#Season 5|Iryu Sousa 5]]}}
{{SeasonRing|TV Asahi|Season 4|Winter 2020|[[Kasouken no Onna#Season 19|Kasouken no Onna 19]]|Autumn 2020|[[Kasouken no Onna#Season 20|Kasouken no Onna 20]]}}
{{SeasonRing|TV Asahi|Season 5|Winter 2021|[[Iryu Sousa#Season 6|Iryu Sousa 6]]|Summer 2021|[[IP]]}}
{{SeasonRing|TV Asahi|Season 6|Winter 2022|[[Kasouken no Onna#Season 21|Kasouken no Onna 21]]|Summer 2022|[[Iryu Sousa#Season 7|Iryu Sousa 7]]}}

[[Category:JDrama]] [[Category:JDrama2016]] [[Category:JDrama2017]] [[Category:JDrama2018]] [[Category:JDrama2019]] [[Category:JDrama2020]] [[Category:JDrama2021]] [[Category:JDrama2022]] [[Category:TV Asahi]] [[Category:Crime]] [[Category:Mystery]] [[Category:Investigation]]