How many movies have Isao Sasaki and Koichi Yada collaborated on?

They have worked on 2 movies together! Their first movie together was Tokusou Sentai Dekaranger: 10 YEARS AFTER (2015) and was their highest rated movie together. They have not worked together since Kamen Rider Saber + Kikai Sentai Zenkaiger: Super Hero Chronicles (2021).