How many movies have Kazunori Iwakura and Shuuji Sakamoto collaborated on?

They have worked on 4 movies together! Their first movie together was Legend of the Galactic Heroes: Golden Wings (1992) while their highest rated movie together was Legend of the Galactic Heroes: Overture to a New War (1993). They have not worked together since Revolutionary Girl Utena: The Movie (1999). They are most known for their animation films together.