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Mantaro Koichi
ACTOR

Mantaro Koichi

Known for Rurouni Kenshin Part II: Kyoto Inferno · Rurouni Kenshin Part III: The Legend Ends · Fukushima 50

Mantarō Koichi (小市 慢太郎 , Koichi Mantarō), born on February 15, 1969 in Osaka, is a Japanese actor. He occasionally does voice work for anime and TV dramas. He's affiliated with Gekidan M.O.P., an agency that mostly assigns work for live action movies and TV series. His bloodtype is B.

Snapshot 2026-10-16

Born
Feb 15, 1969
Birthplace
Osaka, Japan
Known For
Acting

Biography

Mantarō Koichi (小市 慢太郎 , Koichi Mantarō), born on February 15, 1969 in Osaka, is a Japanese actor. He occasionally does voice work for anime and TV dramas. He's affiliated with Gekidan M.O.P., an agency that mostly assigns work for live action movies and TV series. His bloodtype is B.

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Known For

MOVIERurouni Kenshin Part II: Kyoto Inferno
Rurouni Kenshin Part II: Kyoto InfernoToshiyoshi Kawaji · 2014
★ 7.6
MOVIERurouni Kenshin Part III: The Legend Ends
Rurouni Kenshin Part III: The Legend EndsToshiyoshi Kawaji · 2014
★ 7.7
MOVIEFukushima 50
Fukushima 50Chairman of Japanese Nuclear Safety Commission · 2020
★ 6.5
MOVIEThe Hidden Blade
The Hidden Blade · 2004
★ 7.4
TVGalileo
GalileoHiroshi Kamimura · 2007
★ 8.2
TVHero
HeroYagi · 2001
★ 7.9
TVThe Files of Young Kindaichi
The Files of Young KindaichiKen Izumaru · 2022
★ 6.8
TVAIBOU: Tokyo Detective Duo
AIBOU: Tokyo Detective Duo1 eps · 2002
★ 7.5

Filmography

Movies

Samurai Shodown 2Galford
1999
Platonic Sex
2001
Stake OutTasuku Yoshioka
2001
ConcentYamagishi
2002
Karaoke Terror
2003
AntennaShigenobu
2004
Locomotive Teacher
2004
No-Pants Girls: Movie Box-ing2
2004
The Hidden Blade
2004
Ichigo ChipsSakai
2005
ReincarnationYamanaka Producer
2005
SixteenSawazaki
2007
Walking My LifeWakaizumi
2007
The Summit: A Chronicle Of Stones to SerenityKinjiro Okano
2009
The Vulture
2009
Ai wa mieru: Zenmô fûfu ni yadotta chiisana inochi
2010
Ekeb of DekyeKenzo Furuyama
2010
Osaka Love & Soul
2010
Perfect Blue
2010
PS
Pink SubaruZen
2011
Piece: Fragments of a MemoryTojiro Tsuda
2012
The End of Summer
2013
TS
The Sparkling Amber
2013
A Samurai Chronicle
2014
Miracle: Devil Claus' Love and MagicNatsuki Kurita
2014
Rurouni Kenshin Part II: Kyoto InfernoToshiyoshi Kawaji
2014
Rurouni Kenshin Part III: The Legend EndsToshiyoshi Kawaji
2014
Tokyo RefugeesKobayakawa
2014
Before a Falling Star Fades Away奈緒子の父
2015
Gassoh
2015
Ghost TheaterGota Nishikino
2015
Scarecrow and Racket: Aki and Tamako’s Summer VacationMasaya Odagiri
2015
Till Death Do Us What?Yamashita
2015
Death on Gokumon IslandInspector Isokawa
2016
Prison Gate IslandInspector Isokawa
2016
SniperSatoru Kanbe
2016
Somebody's Xylophone
2016
The Tokyo Wind OrchestraKazuya Tachibana
2016
Blossoming Into a FamilySeishiro Ishikawa
2017
Care NinHirofumi Kudo
2017
Error
2017
RadianceSano
2017
Tales of the Bizarre: 2017 Fall Special
2017
Colors of WindKitta
2018
For Love's Sake
2018
My Friend "A"President Kawashima
2018
Neck Bowed in the RainJingoro Gyoda
2018
Perfect World
2018
A Long Goodbye
2019
Only the Cat KnowsMasaki
2019
Yatsuhakamura磯川警部
2019
Care Nin 2: The Flower in Your HeartHirofumi Kudo
2020
Fukushima 50Chairman of Japanese Nuclear Safety Commission
2020
MellowFurukawa Sakon
2020
Memory's TechniqueKazuno Tadashi
2020
One Left Hand Shot
2020
The Sunday Runoff
2022
We're Both GroomsSeto Takeshi
2022

Television

The Files of the Young KindaichiKen Izumaru · 2 eps
1995
Emergency Room 24 HoursManabu Hibiya（日比谷 学） · 12 eps
1999
Samurai Spirits 2: Asura ZanmadenGalford · 2 eps
1999
HeroYagi · 1 eps
2001
AIBOU: Tokyo Detective Duo1 eps
2002
Matrilineal Family2 eps
2005
Umanohone: The Legendary Sword1 eps
2005
Angels with Broken WingsSugawara · 1 eps
2006
Attention PleaseMakoto Watanabe · 11 eps
2006
GalileoHiroshi Kamimura · 1 eps
2007
MR.BRAIN1 eps
2009
Azamijô no lullaby1 eps
2010
Bungo Japanese Literature CinemaMuramatsu · 1 eps
2010
HUNT - Tax Investigation OfficerShiro Kume · 8 eps
2010
Ryōmaden48 eps
2010
Steel Frame5 eps
2010
CSI: Crime Scene Talks1 eps
2011
Wonderful Single LifeShuji Tanigawa · 11 eps
2012
KurokouchiUshii Takeshi · 10 eps
2013
Hanasaki Mai Speaks OutTakahiko Isobe · 1 eps
2014
Nobunaga ConcertoYoshikage Asakura · 2 eps
2014
Shinigami-kun2 eps
2014
The Hours of My LifeAkio Sawada · 11 eps
2014
GodanKoji Mashima · 6 eps
2015
99.9 Criminal LawyerInaba · 2 eps
2016
Cold Case: Door of TruthYasui · 1 eps
2016
Destiny-Like LoveFujii Yoji · 8 eps
2016
Lost IDBaba · 9 eps
2016
Moribito: Guardian of the SpiritThe Cooles · 9 eps
2016
Akira and Akira1 eps
2017
CRISIS: Special Security Squad1 eps
2017
FACE - Cyber Hanzai Tokusouhan10 eps
2017
Kiss that KillsGunji Arai · 10 eps
2018
Nozaki Shuhei - Auditor of BankRyoma Kashiwagi · 8 eps
2018
SuitsYukio Karashima · 1 eps
2018
White and Yellow ~My Pancake Story from Hawaii~Sawano Kyoji [Nami's uncle] · 25 eps
2018
Innocence, Fight Against False ChargesRintaro Ibusuki · 10 eps
2019
Sherlock: Untold StoriesTakahisa Inui · 1 eps
2019
VoiceKenichi Tadokoro · 10 eps
2019
Gourmet Detective Goro AkechiYasuya Dateh · 1 eps
2020
Nozaki Shuhei President of BankRyoma Kashiwagi · 5 eps
2020
The Sun Does Not MoveMiura · 6 eps
2020
The Agent FamilyToshio Sato · 1 eps
2021
Evil God's Balance Public Security Analysis TeamShuzo Kunieda · 10 eps
2022
The Files of Young KindaichiKen Izumaru · 2 eps
2022
Two People Who Can't Fall in Love8 eps
2022
What Do You Really Do About Love?Jiro Okashita · 10 eps
2022
The Inugami FamilyIsokawa · 2 eps
2023
Wave, Listen to Me!Kureko Katsumi · 8 eps
2023
Unmet: Diary of a NeurosurgeonTakami Takeshi · 11 eps
2024
The Devil's Ballad2 eps
2026

Photos

Mantaro Koichi photo
Mantaro Koichi photo
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