How many movies have Koichi Yada and Kosuke Yamashita collaborated on?

They have worked on 9 movies together! Their first movie together was Mahou Sentai Magiranger vs. Dekaranger (2006) while their highest rated movie together was Super Sentai Strongest Battle Director's Cut (2019). They have not worked together since Kikai Sentai Zenkaiger vs. Kiramager vs. Senpaiger (2022). They are most known for their science fiction films together.