How many movies have Kyoko Niimura and Mayumi Nakamura collaborated on?

They have worked on 5 movies together! Their first movie together was Tamagotchi: The Movie! The Happiest Story in the Universe!? (2008) and was their highest rated movie together. They have not worked together since Pokémon the Movie: Diancie and the Cocoon of Destruction (2014). They are most known for their animation films together.