How many movies have Hajime Okayasu and Nozomi Yasuda collaborated on?

They have worked on 3 movies together! Their first movie together was Yakuza Justice: Erotic Code of Honor (1973) while their highest rated movie together was Joshi daisei: Sex kaki seminar (1973). They have not worked together since Joshi daisei: Karisome no tsuma (1974).