How many movies have Koichi Yamadera and Noriko Hidaka acted in together?

They have worked on 8 movies together! Their first movie together was Go! Anpanman: Baikinman's Counterattack (1990) while their highest rated movie together was Ranma ½: The Movie 2 — The Battle of Togenkyo: Rescue the Brides! (1992). They have not worked together since Pokémon: Lucario and the Mystery of Mew (2005). They are most known for their animation films together.