How many movies have Toshiaki Tsushima and Yoshio Nakajima collaborated on?

They have worked on 7 movies together! Their first movie together was Delinquent Girl Boss: Tokyo Drifters (1970) while their highest rated movie together was Yakuza Wolf: I Perform Murder (1972). They have not worked together since G-String Geisha (1975). They are most known for their action films together.