How many movies have Jun Yoshida and Yasushi Matsuura acted in together?

They have worked on 4 movies together! Their first movie together was Jûroku-sai no keiken (1970) while their highest rated movie together was Semi-dokyumento: Zoku nyotai no shinpi (1975). They have not worked together since Japanese Pornography: Kawachi's Erotic Widows (1978).