How many movies have Eiichi Kusumoto and Mitsuko Matsuda collaborated on?

They have worked on 3 movies together! Their first movie together was Lone Wolf and Cub: Baby Cart at the River Styx (1972) and was their highest rated movie together. They have not worked together since Lone Wolf and Cub: Baby Cart in Peril (1972). They are most known for their action films together.