How many movies have Kazuo Koike and Masakazu Tamura collaborated on?

They have worked on 5 movies together! Their first movie together was Odokumiyaku Shushou Kawaite sōrō (1983) while their highest rated movie together was Lone Wolf and Cub: The Final Conflict (1993). They have not worked together since A Samurai's Sorrow (1993).