How many movies have Atsuko Ami and Shinya Yamamoto collaborated on?

They have worked on 3 movies together! Their first movie together was Sukeban Schoolgirl: Sex and Delinquency (1972) while their highest rated movie together was Molester Train (1975). They have not worked together since Semi-dokyumento: Shinjû sex go jû-nen-shi (1975).