How many movies have Rintaro and Yasunori Honda collaborated on?

They have worked on 3 movies together! Their first movie together was The Tale of Osamu Tezuka: I'm Son-Goku (1989) while their highest rated movie together was Reign: The Conqueror Movie (2000). They have not worked together since Reign: The Conqueror Movie (2000). They are most known for their animation films together.