How many movies have Shōji Mori and Yukio Horikita acted in together?

They have worked on 4 movies together! Their first movie together was The Woman Gambler's Iron Rule (1971) while their highest rated movie together was Lone Wolf and Cub: Sword of Vengeance (1972). They have not worked together since Lone Wolf and Cub: White Heaven in Hell (1974). They are most known for their drama films together.