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Koji Yamamoto (actor) - Wikipedia
Kôji Yamamoto - IMDb
Koji Yamamoto - Wikipedia
Koji Yamamoto - AsianWiki
Yamamoto Koji (山本耕史) - MyDramaList
Koji Yamamoto (baseball, born 1946) - Wikipedia
Kôji Yamamoto - Biography - IMDb
Yamamoto Koji - DramaWiki
Koji Yamamoto — The Movie Database (TMDB)
Kōji YAMAMOTO (actor) - Anime News Network