How many movies have Manabu Kamino and Yoko Kajiyama collaborated on?

They have worked on 4 movies together! Their first movie together was Tales of Zestiria: The Shepherd's Advent (2014) while their highest rated movie together was Demon Slayer -Kimetsu no Yaiba- The Movie: Mugen Train (2020). They are most known for their animation films together.