How many movies have Ryushi Mizukami and Sonny Chiba acted in together?

They have worked on 4 movies together! Their first movie together was Lonely Hitman: The Blue Wolf (2001) while their highest rated movie together was New Shadow Warriors IV: Jiraika 2 (2004). They have not worked together since New Shadow Warriors VI: The Final Chapter (2005). They are most known for their drama films together.