How many movies have Mitsuaki Tsuji and Yukio Horikita collaborated on?

They have worked on 2 movies together! Their first movie together was Samaritan Zatoichi (1968) 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: Sword of Vengeance (1972).