How many movies have Go Kuga and Mayumi Yamashita collaborated on?

They have worked on 2 movies together! Their first movie together was Document porno: Joshidaisei ryô maruhi report (1975) while their highest rated movie together was Joshidairyô maruhi repôto: Hoshi garu toshigoro (1976). They have not worked together since Joshidairyô maruhi repôto: Hoshi garu toshigoro (1976).