How many movies have Rena Ichinose and Tsunehiko Watase acted in together?

They have worked on 9 movies together! Their first movie together was Wolves on Motorcycles (1971) while their highest rated movie together was New Battles Without Honor and Humanity 2: Head of the Boss (1975). They have not worked together since New Battles Without Honor and Humanity 2: Head of the Boss (1975). They are most known for their action films together.