How many movies have Masaya Oki and Ryotaro Sugi acted in together?

They have worked on 4 movies together! Their first movie together was Confession of a girl: Purity (1968) and was their highest rated movie together. They have not worked together since Cherry Blossoms in the Air - The Suicide Raiders - Oh, Buddies! (1970). They are most known for their drama films together.