How many movies have Isao Yamagata and Mitsuzō Sasaki collaborated on?

They have worked on 9 movies together! Their first movie together was 旗本退屈男　謎の紅蓮塔 (1957) while their highest rated movie together was Bored Hatamoto: The Daimonji Conspiracy (1959). They have not worked together since The Mysterious Cape (1963). They are most known for their action films together.