How many movies have Masahiro Kakefuda and Nobuaki Nakajima collaborated on?

They have worked on 10 movies together! Their first movie together was Terrifying Girls' High School: Animal Courage (1973) while their highest rated movie together was Which Is Stronger, Karate or the Tiger? (1976). They have not worked together since Slave Contract: Whip & High Heels (1982).