How many movies have Kanjūrō Arashi and Kyōtarō Namiki collaborated on?

They have worked on 6 movies together! Their first movie together was Casebooks of Detective Umon: The Incident of the Fawn-Pattern Cloth (1952) and was their highest rated movie together. They have not worked together since Emperor & Empress Meiji and the Sino-Japanese War (1958).