How many movies have Haruo Nakayama and Kenji Kusumoto collaborated on?

They have worked on 18 movies together! Their first movie together was 一本刀土俵入　 (1954) while their highest rated movie together was Shimizu Port of Chivalry (1957). They have not worked together since The Tattooed Hitman (1974). They are most known for their drama films together.