How many movies have Nana Okada and Shun Ōide acted in together?

They have worked on 4 movies together! Their first movie together was Ten Duels of Young Shingo: Chapter 1 (1981) and was their highest rated movie together. They have not worked together since Wind Whistle in Field, Demon Sword: Matsudaira Tadateru cutting the world (1987). They are most known for their action films together.