How many movies have Kaneto Shiozawa and Yū Yamamoto collaborated on?

They have worked on 3 movies together! Their first movie together was Mobile Suit Gundam I (1981) while their highest rated movie together was Mobile Suit Gundam II: Soldiers of Sorrow (1981). They have not worked together since Karura Mau Movie (1989). They are most known for their animation films together.