How many movies have Akiko Waba and Saori Hayami collaborated on?

They have worked on 1 movie together! Their first movie together was The Oath of Winter, The Festival of Summer - The Great Camphor Tree of Takeoshi (2016) and was their highest rated movie together. They have not worked together since The Oath of Winter, The Festival of Summer - The Great Camphor Tree of Takeoshi (2016).