Kōichi Aihara
- Acting
Known for
Filmography
- Sleepy Eyes of Death 5: Sword of Fire
- On the Road Forever
- Sleepy Eyes of Death 2: Sword of Adventure
- The Tale of Zatoichi Continues
- Sōran wataridori
- Nokosa reta ko tonoko shita haha to
- Keshin
- Oniisan to oneesan
- A Maiko's Holiday
- The Gambler's Code
- Satan's Sword III: The Final Chapter
- A Lustful Man
- Shikaku yashiki
- Uta wa tōge o koete
- Bara daimyo
- Scars of Honor
- Kengan Hakkenden
- Niji no kai midareba
- The Ghost of Yotsuya · Tôzô Kido
- The Woman and the Pirate · 海賊
- Gambler and the Princess
- Akado Suzunosuke: The Defeat of the Skull Mask Gang
- Obsessive Snake
- Kieta koban yashiki
- The Ghost-Cat Cursed Wall
- Wearing a Long-Sleeved Kimono
- Akado Suzunosuke and the Vacuum Slash of the Asuka School
- Fighting Letter for 29 People
- Ninjō misui
- Ōedo ninki otoko
- The Seven Changes of a Paper Crane Continued
- The Seven Changes of a Paper Crane
- Asataro the Crow