How many movies have Satoru Koyama and Yuriko Ishida collaborated on?

They have worked on 2 movies together! Their first movie together was Fist of the North Star: The Legend of Yuria (2007) while their highest rated movie together was Fist of the North Star: Legend of Raoh - Chapter of Fierce Fight (2007). They have not worked together since Fist of the North Star: Legend of Raoh - Chapter of Fierce Fight (2007).