How many movies have Hirofumi Ishigaki and Kazumasa Otani collaborated on?

They have worked on 4 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 Gokaiger Goseiger Super Sentai 199 Hero Great Battle (2011). 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.