How many movies have Sō Yamamura and Yoichi Hayashi acted in together?

They have worked on 3 movies together! Their first movie together was Lone Wolf and Cub: Baby Cart in Peril (1972) while their highest rated movie together was Professional Killers – Assassin's Quarry (1973). They have not worked together since Professional Killers – Assignment by Night (1974). They are most known for their action films together.