How many movies have Akira Inoue and Masahiro Kawasaki collaborated on?

They have worked on 4 movies together! Their first movie together was Hanzo, the Razor (1993) while their highest rated movie together was Lone Wolf and Cub: The Final Conflict (1993). They have not worked together since 10 Years - A Wife's Betrayal (2004). They are most known for their drama films together.