How many movies have Minoru Kawasaki and Yasuhiro Koshi collaborated on?

They have worked on 1 movie together! Their first movie together was Nagai Go World: Maboroshi Panty VS Henchin Pokoider (2004) and was their highest rated movie together. They have not worked together since Nagai Go World: Maboroshi Panty VS Henchin Pokoider (2004).