How many movies have Keitaro Motonaga and Mutsumi Tamura collaborated on?

They have worked on 6 movies together! Their first movie together was Digimon Adventure tri. Part 1: Reunion (2015) while their highest rated movie together was Digimon Adventure tri. Part 5: Coexistence (2017). They have not worked together since Digimon Adventure tri. Part 6: Future (2018). They are most known for their science fiction films together.