How many movies have Kazuhisa Kawahara and Mitsuhiro Oikawa acted in together?

They have worked on 3 movies together! Their first movie together was AIBOU: X-DAY (2013) while their highest rated movie together was AIBOU: The Movie IV (2017). They have not worked together since AIBOU: The Movie IV (2017). They are most known for their action films together.