How many movies have Manabu Morita and Tokio Oki acted in together?

They have worked on 13 movies together! Their first movie together was Hell's Assassin (1962) 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 action films together.