How many movies have Hisao Maki and Ikki Kajiwara collaborated on?

They have worked on 4 movies together! Their first movie together was A Human Murder Weapon (1992) while their highest rated movie together was Bodyguard Kiba: Apocalypse of Carnage (1994). They have not worked together since Bodyguard Kiba: Combat Apocalypse 2 (1995). They are most known for their action films together.