How many movies have Taizen Shishido and Toshio Taniguchi collaborated on?

They have worked on 6 movies together! Their first movie together was Lone Wolf and Cub: Baby Cart at the River Styx (1972) while their highest rated movie together was Internal Sleuth (1973). They have not worked together since Lone Wolf and Cub: White Heaven in Hell (1974). They are most known for their action films together.