How many movies have Hollow Dragon and Toshiatsu Kôzuma collaborated on?

They have worked on 14 movies together! Their first movie together was Hentai tôkô shashin: Shiin (1996) while their highest rated movie together was Gibo no onanii: Hatsujô roshutsu (1997). They have not worked together since Innyo Ranbu: Battle Do-waisetsu (2001).