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Koki Mitani

みたに こうき

Mitani Koki

Pen Names: Sotaro Hitotsubashi（Used as stage name when acting in early theater troupe）

Profile

Gender
Male
Born
1961-07-08 （Setagaya-ku, Tokyo, Japan）
Nationality
Japan
Languages
Japanese

Career

Occupations
Playwright, Screenwriter, Director, Film director, Actor
Active Years
1983-2025
Affiliations
Sis Company
Influenced By
Neil Simon, Billy Wilder, Akira Hayasaka, Moriichi Ichikawa

Education

Nihon University College of Art
College of Art / Department of Theater
Degree: 学士
Year of Graduation: 1983
Country: Japan

Awards

Japan Academy Prize for Best Screenplay
1998
Work: Radio no Jikan
Category: 脚本
Organization: Japan Academy Prize Association
Result: 受賞
Kishida Kunio Drama Award
2000
Work: OkePi!
Category: 戯曲
Organization: Kishida Kunio Drama Award Committee
Result: 受賞
Medal with Purple Ribbon
2017
Organization: Government of Japan
Result: 受章
Kikuchi Kan Prize
2022
Organization: Kikuchi Kan Prize Committee
Result: 受賞
NHK Broadcasting Culture Award
2023
Organization: NHK
Result: 受賞
Mukai Kuniko Award
2023
Work: The 13 Lords of the Shogun
Category: テレビドラマ脚本
Organization: Mukai Kuniko Award Selection Committee
Result: 受賞

Awards & Nominations

Works

Major Works

Radio no Jikan

1997 Comedy

A story about playwrights struggling with their work.

ComedyOccupationStage
Adaptations
  • [Film] Radio no Jikan / 三谷幸喜 (1997)

OkePi!

2000 Play

A comedy play focusing on theater troupe members.

ComedyTheaterCompanionship

Everyone's House

2001 Film

A home drama depicting family bonds.

FamilyBondsDrama

The Uchoten Hotel

2006 Comedy

An ensemble comedy film set in a hotel.

ComedyHotelEnsemble

The Magic Hour

2008 Comedy

A comedy film set in the movie industry.

ComedyFilmBehind the scenes

Wonderful Nightmare

2011 Comedy

A comedy about incidents involving ghosts.

ComedyGhostIncident

Kiyosu Conference

2013 Historical Drama

Historical drama about a meeting of warlords in the Sengoku period.

HistorySengoku periodPolitics
Adaptations
  • [Film] Kiyosu Conference / 三谷幸喜 (2013)

Kioku ni Gozaimasen!

2019 Comedy

Comedy film featuring a politician as the main character.

ComedyPolitics

Style & Themes

Literary Style
Logical story developmentCompelling character depictionWittyHumorousHeartwarming human hymn
Recurring Motifs
Group cooperationConflict through acting as someone else

Health

  • Prostate cancer
    2016年に手術
    Promoted importance of early detection and continues regular check-ups.

Legacy

As a playwright, screenwriter, director, and film director, he has greatly influenced Japanese entertainment. Highly acclaimed for blending comedy with human drama, and recipient of numerous literary awards.

Academic Societies

  • Japan Playwright Association

Quotes

  • My work shows its true colors only close to the deadline.
    Source: Mitani Koki's Ordinary Life (2022)

Trivia

  • At age 12, he had a failed appendicitis surgery requiring reoperation and missed school for half a year.
  • Has cat allergy but keeps cats as pets.
  • Visits convenience stores twice daily and considers it essential to his diet.