How many movies have Hidetoshi Kageyama and Mitsuyoshi Hikawa collaborated on?

They have worked on 4 movies together! Their first movie together was Enka Jôshikô: Kizudarake no Kaben (1973) while their highest rated movie together was International Stewardess: Erotic Flight (1976). They have not worked together since International Stewardess: Erotic Flight (1976).