How many movies have Masataka Iwao and Seiko Shimura collaborated on?

They have worked on 11 movies together! Their first movie together was Judo vs. Karate (1966) while their highest rated movie together was Baian the Assassin (1981). They have not worked together since The Lowly Ronin: Hanayama Daikichi (1995). They are most known for their action films together.