How many movies have Reiichi Hatanaka and Takuzō Kawatani acted in together?

They have worked on 7 movies together! Their first movie together was Red Peony Gambler: Gambler's Obligation (1968) while their highest rated movie together was The Red Silk Gambler (1972). They have not worked together since Oxen Split Torturing (1976). They are most known for their drama films together.