How many movies have Ken Yoshizawa and Michio Akiyama acted in together?

They have worked on 6 movies together! Their first movie together was New Underground History of Japanese Violence: Vengeance Demon (1969) while their highest rated movie together was Running in Madness, Dying in Love (1969). They have not worked together since Backside of 17 (1972). They are most known for their drama films together.