How many movies have Takuya Iida and Yuichiro Nakajima collaborated on?

They have worked on 4 movies together! Their first movie together was Lupin the Third vs. Detective Conan: The Movie (2013) while their highest rated movie together was Love Live! The School Idol Movie (2015). They have not worked together since Go! Anpanman: Dororin and the Transformation Carnival (2022). They are most known for their animation films together.