How many movies have Eriko Nakamura and Kiyotaka Tamiya collaborated on?

They have worked on 1 movie together! Their first movie together was THE iDOLM@STER MOVIE: Beyond the Brilliant Future! (2014) and was their highest rated movie together. They have not worked together since THE iDOLM@STER MOVIE: Beyond the Brilliant Future! (2014).