How many movies have Kazuo Ōbayashi and Yukio Horikita acted in together?

They have worked on 13 movies together! Their first movie together was Hidden Story of the Yagyu Clan (1956) 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). They are most known for their drama films together.