Koki Mitani

1990

• [ ] After All, I Love Cats the Three Onda Sisters’ Great Kyoto Troubles (Screenplay) 

1991

• [ ] The Gentle 12 (Screenplay) 
• [ ] The Gentle 12 (Theatre Play) 

1995

• [ ] The Laughing Kangaroo (Writer) 

1996

• [ ] The Disappearance of Furuhata Ninzaburo (Writer) 
• [ ] A Brief Parting (Writer) 

1997

• [ ] Welcome Back, Mr. McDonald (Screenplay) 
• [ ] Warai no Daigaku (Screenplay) 
• [ ] Warai no Daigaku (Original Story) 
• [ ] Welcome Back, Mr. McDonald (Theatre Play) 

1999

• [ ] Furuhata Ninzaburo vs SMAP (Screenplay) 
• [ ] The Terror of Dr. Kuroiwa (Writer) 

2001

• [ ] All About Our House (Writer) 
• [ ] Vamp Show (Writer) 

2002

• [ ] Ryoma's Wife, Her Husband and Her Lover (Screenplay) 
• [ ] Ryoma's Wife, Her Husband and Her Lover (Theatre Play) 

2004

• [ ] University of Laughs (Writer) 
• [ ] All By His Excellency's Work (Writer) 

2006

• [ ] 新選組!! 土方歳三 最期の一日 (Writer) 
• [ ] Furuhata Ninzaburo The Resurrection Of Death (Writer) 
• [ ] Furuhata Ninzaburo Final: A Fair Murderer (Writer) 
• [ ] Furuhata Ninzaburo Final: Last Dance (Writer) 
• [ ] Suite Dreams (Writer) 

2007

• [ ] The Fearless Otojiro's Company (Writer) 

2008

• [ ] Furuhata Chugakusei (Screenplay) 
• [ ] The Magic Hour (Screenplay) 

2009

• [ ] 東京サンシャインボーイズ『returns』 (Writer) 

2011

• [ ] Once in a Blue Moon (Writer) 
• [ ] A Flawless Concierge (Screenplay) 

2013

• [ ] The Kiyosu Conference (Writer) 

2014

• [ ] Airport 2013 (Writer) 

2015

• [ ] Galaxy Turnpike (Writer) 
• [ ] Murder on the Orient Express (Screenplay) 

2018

• [ ] Fuunjitachi ~ Rangaku Kakumei-hen (Screenplay) 
• [ ] The Murder of Kuroido (Screenplay) 

2019

• [ ] Hit Me Anyone One More Time (Screenplay) 

2020

• [ ] Daichi (Social Distancing Version) (Theatre Play) 

2021

• [ ] Promise of death (Screenplay) 

2022

• [ ] VAMP SHOW (Writer) 

2023

• [ ] Warai no daigaku (Writer) 

2024

• [ ] All About Suomi (Writer) 

2025

• [ ] Oi, Dazai (Writer) 
• [ ] 蒙古が襲来 (Writer) 
• [ ] 三谷文楽「人形ぎらい」 (Writer) 

1997

• [ ] Welcome Back, Mr. McDonald (Director) 

2001

• [ ] All About Our House (Director) 

2006

• [ ] Suite Dreams (Director) 

2007

• [ ] The Fearless Otojiro's Company (Director) 

2008

• [ ] The Magic Hour (Director) 

2009

• [ ] 東京サンシャインボーイズ『returns』 (Director) 

2011

• [ ] Once in a Blue Moon (Director) 
• [ ] 三谷幸喜「short cut」 (Director) 
• [ ] A Flawless Concierge (Director) 

2013

• [ ] The Kiyosu Conference (Director) 

2014

• [ ] Airport 2013 (Director) 
• [ ] Jekyll & Hyde & Tears & Liquor (Stage Director) 

2015

• [ ] Galaxy Turnpike (Director) 

2019

• [ ] Hit Me Anyone One More Time (Director) 

2020

• [ ] Daichi (Social Distancing Version) (Stage Director) 
• [ ] 劇場の灯を消すな！PARCO劇場編 (Director) 

2023

• [ ] Warai no daigaku (Director) 

2024

• [ ] All About Suomi (Director) 

2025

• [ ] Oi, Dazai (Director) 
• [ ] 蒙古が襲来 (Director) 
• [ ] 昭和から騒ぎ (Director) 
• [ ] 三谷文楽「人形ぎらい」 (Director) 

2014

• [ ] Jekyll & Hyde & Tears & Liquor (Script) 

1999

• [ ] Round About Midnight (Man Watching TV) 

2002

• [ ] Ryoma's Wife, Her Husband and Her Lover (????) 

2006

• [ ] Murder of the Inugami Clan (Nasu Hoteru Shujin) 

2010

• [ ] Tales of the Bizarre 20th Anniversary Spring Special: Popular Episode Competition (????) 

2011

• [ ] A Flawless Concierge (The Film Director) 

2021

• [ ] What Happened to Our Nest Egg!? (Moriguchi) 
• [ ] 72nd NHK Kōhaku Uta Gassen (????) 

2024

• [ ] 90 Years Old – So What? (Taxi driver)