How many movies have Toshiatsu Kôzuma and Tôshi Yanagi collaborated on?

They have worked on 15 movies together! Their first movie together was Chikan man'in densha: Etchi na nioi (1997) while their highest rated movie together was Whore Hospital (1997). They have not worked together since Innyo Ranbu: Battle Do-waisetsu (2001).