How many movies have Hiroshi Yamaji and Yoshinori Chiba collaborated on?

They have worked on 9 movies together! Their first movie together was Siren the Ghost Story Again (1994) while their highest rated movie together was Mobsters' Confessions (1998). They have not worked together since Shin-Karajishi Kabushiki-Kaisha (1999). They are most known for their action films together.