How many movies have Tatsuya Hiramatsu and Yoshikazu Yasuhiko collaborated on?

They have worked on 1 movie together! Their first movie together was Kaze to Ki no Uta Sanctus: Sei Naru Kana (1987) and was their highest rated movie together. They have not worked together since Kaze to Ki no Uta Sanctus: Sei Naru Kana (1987).