How many movies have Sayaka Ohara and Shigeru Nishiyama collaborated on?

They have worked on 6 movies together! Their first movie together was anohana: The Flower We Saw That Day - The Movie (2013) while their highest rated movie together was Tamayura: Graduation Photo Part 3 - Akogare (2015). They have not worked together since Tamayura: Graduation Photo Part 4 - Ashita (2016). They are most known for their animation films together.