How many movies have Ikuo Sekimoto and Kinji Nakamura collaborated on?

They have worked on 6 movies together! Their first movie together was Red Peony Gambler: Execution of Duty (1972) while their highest rated movie together was Terrifying Girls' High School: Delinquent Convulsion Group (1973). They have not worked together since Girl Boss: Crazy Ball Game (1974). They are most known for their drama films together.