Ryota Kosawa: Japanese Screenwriter and Television Writer

Ryota Kosawa (古沢 良太, born August 6, 1973) is a prominent Japanese screenwriter recognized for his work across film and television dramas. Born in Japan, Kosawa has built a prolific career writing scripts for both feature films and television series since the early 2000s.

Career and Notable Works

Kosawa has contributed to numerous high-profile Japanese television series and cinematic releases. His notable television scripts include the popular legal comedy series Legal High (2012, 2013), the long-running detective procedural franchise Aibou, and the 2023 NHK taiga drama Dou Suru Ieyasu. In the realm of film, he is widely recognized for penning the nostalgic drama series Always: Sunset on Third Street (2005) and its sequels, as well as the hit caper comedy franchise The Confidence Man JP.

Filmography

Feature Films

• Always: Sunset on Third Street (2005)
• Kisaragi (2007)
• Always: Sunset on Third Street 2 (2007)
• Sanpei The Fisher Boy (2009)
• Dear My Love (2009)
• Phone Call to the Bar (2011)
• Always: Sunset on Third Street 3 (2012)
• Black Dawn (2012)
• Suzuki Sensei (2013)
• Detective in the Bar 2 (2013)
• A Boy Called H (2013)
• Parasyte Part 1 (2014)
• Parasyte Part 2 (2015)
• April Fools (2015)
• Scanner (2016)
• Mixed Doubles (2017)
• The Last Shot in the Bar (2017)
• The Confidence Man JP: The Movie (2019)
• The Confidence Man JP: Episode of the Princess (2020)
• The Confidence Man JP: Episode of the Hero (2022)
• The Legend & Butterfly (2023)

Television Series and TV Movies

• The Animal Doctor (TV Asahi / 2003)
• Aibou (Seasons 4 through 12, TV Asahi / 2005–2013)
• Gonzo: Densetsu no Keiji (TV Asahi / 2008)
• Anti-Terrorism Investigators (NHK / 2009)
• Suzuki Sensei (TV Tokyo / 2011)
• Legal High (Fuji TV / 2012, 2013)
• Legal High SP (Fuji TV / 2013, 2014)
• Dating: What's It Like To Be In Love? (Fuji TV / 2015)
• The Confidence Man JP (Fuji TV / 2018)
• Dou Suru Ieyasu (NHK / 2023)
• Ramune Monkey (Fuji TV / 2026)