How many movies have Matsumoto Hakuō I and Tatsuo Ōsone collaborated on?

They have worked on 5 movies together! Their first movie together was Hana no shôgai (1953) while their highest rated movie together was Taikoki - The Saga of Hideyoshi (1958). They have not worked together since Honno-Ji in Flames (1960). They are most known for their history films together.