How many movies have Hitoshi Hibino and Ken Naito collaborated on?

They have worked on 4 movies together! Their first movie together was Puella Magi Madoka Magica the Movie Part I: Beginnings (2012) while their highest rated movie together was Puella Magi Madoka Magica the Movie Part III: Rebellion (2013). They have not worked together since The Quintessential Quintuplets∽ (2023). They are most known for their animation films together.