How many movies have Hidetoshi Kageyama and Yoichi Yamamoto collaborated on?

They have worked on 4 movies together! Their first movie together was The Last Laugh (1972) while their highest rated movie together was New Apartment Wife: Prostitution in Building #13 (1975). They have not worked together since Toruko maruhi saizensen: Mitsugi 96 te (1975).