How many movies have Ayako Sato and Seiko Asai collaborated on?

They have worked on 3 movies together! Their first movie together was Puella Magi Madoka Magica the Movie Part III: Rebellion (2013) while their highest rated movie together was The Last: Naruto the Movie (2014). They have not worked together since Boruto: Naruto the Movie (2015). They are most known for their animation films together.