How many movies have Koichi Yada and Mitsuru Oki collaborated on?

They have worked on 3 movies together! Their first movie together was Tensou Sentai Goseiger vs Shinkenger: Epic on the Silver Screen (2011) while their highest rated movie together was Kaizoku Sentai Gokaiger vs. Space Sheriff Gavan: The Movie (2012). They have not worked together since Kaizoku Sentai Gokaiger vs. Space Sheriff Gavan: The Movie (2012). They are most known for their adventure films together.