How many movies have Ryuji Shiromae and Satoshi Nishimura collaborated on?

They have worked on 4 movies together! Their first movie together was Mobile Suit Zeta Gundam - A New Translation II: Lovers (2005) while their highest rated movie together was Mobile Suit Gundam Hathaway (2021). They have not worked together since Mobile Suit Gundam Hathaway (2021). They are most known for their science fiction films together.