How many movies have Kazuhiro Miwa and Shin'ichirō Miki collaborated on?

They have worked on 4 movies together! Their first movie together was Mobile Suit Gundam 00 The Movie: -A Wakening of the Trailblazer- (2010) while their highest rated movie together was Demon Slayer -Kimetsu no Yaiba- The Movie: Mugen Train (2020). They have not worked together since Bubble (2022). They are most known for their animation films together.