How many movies have Kaori Hoshiba and Mie Kasai collaborated on?

They have worked on 3 movies together! Their first movie together was Saint☆Young Men (2013) while their highest rated movie together was Maquia: When the Promised Flower Blooms (2018). They have not worked together since Maquia: When the Promised Flower Blooms (2018). They are most known for their animation films together.