How many movies have Shintarō Katsu and Tadashi Iwata acted in together?

They have worked on 15 movies together! Their first movie together was Sisters of Gion (1956) while their highest rated movie together was Lone Wolf and Cub: Sword of Vengeance (1972). They have not worked together since Hanzo the Razor: Sword of Justice (1972). They are most known for their drama films together.