How many movies have Isao Takahata and Megumi Kagawa collaborated on?

They have worked on 7 movies together! Their first movie together was Nausicaä of the Valley of the Wind (1984) while their highest rated movie together was Grave of the Fireflies (1988). They have not worked together since The Tale of The Princess Kaguya (2013). They are most known for their animation films together.