How many movies have Gōzō Sōma and Kazuhiro Yonezawa collaborated on?

They have worked on 2 movies together! Their first movie together was Quick-draw Okatsu (1969) while their highest rated movie together was Female Prisoner Scorpion: Jailhouse 41 (1972). They have not worked together since Female Prisoner Scorpion: Jailhouse 41 (1972).