How many movies have Nobunori Niwa and Takuma Terashima collaborated on?

They have worked on 3 movies together! Their first movie together was Sacred Seven: Shirogane no Tsubasa (2012) and was their highest rated movie together. They have not worked together since Code Geass: Akito the Exiled 5: To Beloved Ones (2016). They are most known for their animation films together.