When Norihiko OBAYASHI made his debut in commercial films with the Toho movie, "House (movie)," Obayashi, who did not have any experience as an assistant director, was met by backlash from some of the persons working in the studio, and therefore, Okamoto walked around to persuade these persons, saying 'let's study what to study accepting a new wind.'
また、大林宣彦が東宝映画『ハウス(映画)』で商業映画デビューすることになったとき、撮影所内部から助監督経験のない大林に対する反発が強まったが、それらの人々に「新しい風を迎えて学ぶべきは学ぼう」と説得して回ったのが岡本だったという。