How many movies have Masahisa Sadanaga and Masaomi Kondo collaborated on?

They have worked on 4 movies together! Their first movie together was Nagare no fu dai ichibu dōran dai ni bu yoake sakuhin jōhō (1974) while their highest rated movie together was Skyscraper Murder Case (1976). They have not worked together since Detective Kyosuke Kozu's Murder Reasoning 7 (1987). They are most known for their drama films together.