How many movies have Masahiro Kakefuda and Yoshio Nakajima collaborated on?

They have worked on 9 movies together! Their first movie together was Oh Wonderful Utamaro! (1974) while their highest rated movie together was Truck Rascals IX: A 5,000 Kilometer Blast (1979). They have not worked together since The Dump Truck Rascal (1981). They are most known for their action films together.