How many movies have Koji Tsuruta and Ryūtarō Tatsumi acted in together?

They have worked on 6 movies together! Their first movie together was Hanran (1954) while their highest rated movie together was Hishakaku and Kiratsune: A Tale of Two Yakuza (1968). They have not worked together since The Pledge (1972). They are most known for their crime films together.