However, as he became gradually more disappointed with the disparity between his own image and the finished result, he established 'Koichi SAITO Production Co., Ltd.' using his own private funds in 1967.
しかし次第に自身のイメージと作品とのあまりのずれに失望し、1967年、私財を投じて「斎藤プロダクション」を設立する。