How many movies have Keiichi Yamada and Naoki Sano acted in together?

They have worked on 4 movies together! Their first movie together was NOAH: Departure 2004 (2004) while their highest rated movie together was NJPW Wrestle Kingdom 14: Night 1 (2020). They have not worked together since NJPW Wrestle Kingdom 14: Night 2 (2020).