How many movies have Megumi Kagawa and Noriyoshi Oohira collaborated on?

They have worked on 2 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 Grave of the Fireflies (1988).

Grave of the Fireflies (1988)

Crew
Key Animation
Crew
Sound Effects

Nausicaä of the Valley of the Wind (1984)

Crew
Key Animation
Crew
Sound Effects Editor