How many movies have Akiko Seki and Hideki Ito collaborated on?

They have worked on 4 movies together! Their first movie together was Digimon Tamers: Battle of Adventurers (2001) while their highest rated movie together was Fullmetal Alchemist the Movie: Conqueror of Shamballa (2005). They have not worked together since Fullmetal Alchemist the Movie: Conqueror of Shamballa (2005). They are most known for their animation films together.