How many movies have Saori Sugimoto and Shiho Kawahara collaborated on?

They have worked on 4 movies together! Their first movie together was Shimajiro in Bookland (2016) while their highest rated movie together was Shimajiro and the Rainbow Oasis (2017). They have not worked together since Shimajiro to Ururu no Heroland (2019). They are most known for their fantasy films together.