How many movies have Hiroshi Masuoka and Jun Kawagoe collaborated on?

They have worked on 4 movies together! Their first movie together was Urban Square: In Pursuit of Amber (1986) while their highest rated movie together was Go! Anpanman: Fly! The Handkerchief of Hope (2013). They have not worked together since Go! Anpanman: Twinkle! Princess Vanilla Of Ice Cream Land (2019). They are most known for their animation films together.