How many movies have Kinji Fukasaku and Susumu Saji collaborated on?

They have worked on 5 movies together! Their first movie together was Greed in Broad Daylight (1961) while their highest rated movie together was League of Gangsters (1963). They have not worked together since New Battles Without Honor and Humanity 2: Head of the Boss (1975). They are most known for their crime films together.