How many movies have Megumi Hayashibara and Tsutomu Kawahigashi collaborated on?

They have worked on 5 movies together! Their first movie together was Pokémon Heroes (2002) while their highest rated movie together was Sword Art Online the Movie – Progressive – Aria of a Starless Night (2021). They have not worked together since Sword Art Online the Movie – Progressive – Aria of a Starless Night (2021). They are most known for their animation films together.