How many movies have Shinji Kubo and Shuji Sasano collaborated on?

They have worked on 6 movies together! Their first movie together was 女泣かせ一発勝負 (1970) while their highest rated movie together was College Girl: 3 Days, 3 Nights, All Sweaty (1979). They have not worked together since Groper Hairdresser: Also Wears Underwear (1982).