How many movies have Haruka Tajima and Kōji Yashiro acted in together?

They have worked on 4 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 The Watcher in the Attic (1976). They have not worked together since Koichiro Uno's Yummy and Meaty (1977).