How many movies have Akiko Yajima and Takeharu Oonishi acted in together?

They have worked on 2 movies together! Their first movie together was Crayon Shin-chan: Explosion! The Hot Spring's Feel Good Final Battle (1999) while their highest rated movie together was Crayon Shin-chan: The Glorious Storm-invoking Yakiniku Road (2003). They have not worked together since Crayon Shin-chan: The Glorious Storm-invoking Yakiniku Road (2003).