How many movies have Atsuko Sakakura and Izumi Hirabayashi collaborated on?

They have worked on 5 movies together! Their first movie together was Magical Sisters Yoyo & Nene (2013) while their highest rated movie together was Maquia: When the Promised Flower Blooms (2018). They have not worked together since SHIROBAKO the Movie (2020). They are most known for their animation films together.