How many movies have Hideo Kumagai and Kenji Hagiwara collaborated on?

They have worked on 9 movies together! Their first movie together was Teenage Yakuza (1962) while their highest rated movie together was The Sloe-eyed Siren (1972). They have not worked together since Wet and Crying: Based On Aiko Nakayama's School of Widows (1977).