How many movies have Koji Sato and Mitsuyuki Yakushiji collaborated on?

They have worked on 2 movies together! Their first movie together was Aizome Kyôko no mibôjin geshuku (1984) while their highest rated movie together was A Naive History of the Bakumatsu Era (1991). They have not worked together since A Naive History of the Bakumatsu Era (1991).