How many movies have Mitsuyoshi Hikawa and Toshihiko Oda collaborated on?

They have worked on 5 movies together! Their first movie together was Enka Jôshikô: Kizudarake no Kaben (1973) while their highest rated movie together was Jitsuroku: Ganso manaita shô (1975). They have not worked together since International Stewardess: Erotic Flight (1976).