How many movies have Kumi Horii and Madoka Hirayama collaborated on?

They have worked on 2 movies together! Their first movie together was Zone of the Enders: Idolo (2001) while their highest rated movie together was Love Live! Sunshine!! The School Idol Movie Over the Rainbow (2019). They have not worked together since Love Live! Sunshine!! The School Idol Movie Over the Rainbow (2019).