How many movies have Isao Natsuyagi and Nenji Kobayashi acted in together?

They have worked on 10 movies together! Their first movie together was Kamikaze Cop, No Epitaph to Us (1971) while their highest rated movie together was Under the Flag of the Rising Sun (1972). They have not worked together since The Firefly (2001). They are most known for their drama films together.