How many movies have Mami Yamasaki and Takaaki Utsunomiya collaborated on?

They have worked on 2 movies together! Their first movie together was Juken Sentai Gekiranger vs. Boukenger (2008) 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).