How many movies have Kentaro Kondo and Shinya Yamamoto collaborated on?

They have worked on 9 movies together! Their first movie together was Dokyumento poruno: Zoku chikan (1973) while their highest rated movie together was College Girl: 3 Days, 3 Nights, All Sweaty (1979). They have not worked together since College Girl: 3 Days, 3 Nights, All Sweaty (1979).