How many movies have Akiko Seki and Yukiko Miyamoto collaborated on?

They have worked on 4 movies together! Their first movie together was UN-GO episode:0 INGA-RON (2011) while their highest rated movie together was The Quintessential Quintuplets Movie (2022). They have not worked together since The Quintessential Quintuplets Movie (2022). They are most known for their animation films together.