How many movies have Hiroshi Yamaguchi and Takehito Koyasu collaborated on?

They have worked on 4 movies together! Their first movie together was Neon Genesis Evangelion: Death and Rebirth (1997) while their highest rated movie together was Revival of Evangelion (1998). They have not worked together since Sergeant Keroro The Super Duper Movie 4: Crushing Invasion, Dragon Warriors (2009). They are most known for their drama films together.