How many movies have Eriko Kubokawa and Toshiharu Sugie collaborated on?

They have worked on 3 movies together! Their first movie together was Naruto the Movie: Legend of the Stone of Gelel (2005) while their highest rated movie together was The Girl Who Leapt Through Time (2006). They have not worked together since The Piano Forest (2007). They are most known for their animation films together.