How many movies have Keijirō Morozumi and Shôtarô Ôshima acted in together?

They have worked on 3 movies together! Their first movie together was Blackmail Is My Life (1968) while their highest rated movie together was I, the Executioner (1968). They have not worked together since Watch Out, Crimson Bat! (1969). They are most known for their drama films together.