How many movies have Haruhide Kuwano and Hiroshi Aoyama collaborated on?

They have worked on 4 movies together! Their first movie together was The Den of Beasts (1951) while their highest rated movie together was Tsukigata Hanpeita (1952). They have not worked together since Gan-chan no keisatsu nikki (1962). They are most known for their drama films together.