Koichi Yajima
- Writing
Known for
Filmography
- Six Lying University Students · Screenplay
- 風よ あらしよ 劇場版 · Screenplay
- Yukio in Tokyo · Writer
- Haruka no Hikari · Story
- Only Yesterday · Screenplay
- Ima da kara, shinsaku drama tsukuttemimashita · Writer
- Wasteful Days of High School Girls · Screenplay
- Caseworker's Diary: Constitutional Rights, The Minimum Standard of Wholesome and Cultured Living · Screenplay
- Cruel Crowd · Screenplay, Creator
- Busujima Yuriko no Sekirara Nikki · Writer