How many movies have Hiroyoshi Yamamoto and Shiro Koshinaka acted in together?

They have worked on 9 movies together! Their first movie together was NJPW Battle Zone Space II (1992) while their highest rated movie together was NJPW New Year Dash !! 2016 (2016). They have not worked together since NJPW New Year Dash !! 2016 (2016).