How many movies have Eriko Nakamura and Mayako Nigo acted in together?

They have worked on 4 movies together! Their first movie together was THE IDOLM@STER 7th ANNIVERSARY 765PRO ALLSTARS (2012) while their highest rated movie together was THE IDOLM@STER M@STERS OF IDOL WORLD!! 2015 (2015). They have not worked together since THE IDOLM@STER New Year Live!! Hatsuboshi Enbu (2019). They are most known for their music films together.