How many movies have Beniko Iida and Rei Okamoto acted in together?

They have worked on 5 movies together! Their first movie together was I Am 18 Years Old: Secret Story of a Mistress (1976) while their highest rated movie together was Assault! Jack the Ripper (1976). They have not worked together since Koichiro Uno's Nurse's Dormitory (1978). They are most known for their drama films together.