How many movies have Chōshirō Ishii and Kikumaru Okuda collaborated on?

They have worked on 3 movies together! Their first movie together was 300 Million Yen Mission (1971) while their highest rated movie together was Lady Snowblood (1973). They have not worked together since Lady Snowblood 2: Love Song of Vengeance (1974). They are most known for their drama films together.