However, he was not very much inclined to do yakuza films nor did he produce many documentary-oriented yakuza movies which had become highly popular after the release of "Jingi naki Tatakai" (Battle Without Honor and Humanity) series.
しかし、本人はやくざ映画はあまり好みでなかったらしく、『仁義なき戦い』シリーズの大ヒットで流行した実録系のやくざ映画には殆んど参加しなかった。