Biography
Born in Gifu Prefecture, Kōyama attended Nihon University but quit midway to join the independent production company Kindai Eiga Kyokai, where he worked as an assistant director under such directors as Kaneto Shindō, Kōzaburō Yoshimura, and Tadashi Imai. He made his directorial debut in 1971 with thechildren's film Koi no iru mura. His second film, Futatsu no hāmonika (1976), earned him a New Directors Citation from the Directors Guild of Japan. His 1983 film Hometown was entered into the 13th Moscow International Film Festival. His 1987 film, Hachiko Monogatari, about the faithful dog Hachikō, was the top Japanese film at the box office that year.He is known for his humanistic perspective.
Filmography
Cast Credits
No cast credits available.
Crew
Crew Credits

Until the Day Comes
Role: Director
MOVIE • 2014

Anne of Green Gables Digest Version
Role: Script
MOVIE • 2014

Anne of Green Gables: Road to Green Gables
Role: Writer
MOVIE • 2010

The Last Game: Waseda vs. Keio
Role: Director
MOVIE • 2008

Kusa no ran
Role: Director
MOVIE • 2004

A Single Drop of Water in a Mighty River
Role: Director
MOVIE • 2001
Riot in Gujo
Role: Executive Producer
MOVIE • 2000
Riot in Gujo
Role: Screenplay
MOVIE • 2000
Riot in Gujo
Role: Director
MOVIE • 2000

The Life and Love of Kenji Miyazawa
Role: Director
MOVIE • 1996

Maya no isshou
Role: Director
MOVIE • 1996

Maya no isshou
Role: Screenplay
MOVIE • 1996

Mitabi no kaikyô
Role: Director
MOVIE • 1995

Mitabi no kaikyô
Role: Screenplay
MOVIE • 1995

Himeyuri no To
Role: Director
MOVIE • 1995

Himeyuri no To
Role: Screenplay
MOVIE • 1995

Sakura
Role: Director
MOVIE • 1994

Summer of the Moonlight Sonata
Role: Director
MOVIE • 1993

Faraway Sunset
Role: Director
MOVIE • 1992

The Pale Hand
Role: Director
MOVIE • 1990