How many movies have Osamu Tanaka and Toshie Kokabu collaborated on?

They have worked on 6 movies together! Their first movie together was Female Prisoner #701: Scorpion (1972) while their highest rated movie together was Female Prisoner Scorpion: Jailhouse 41 (1972). They have not worked together since Devil's Flute (1979). They are most known for their crime films together.