How many movies have Kinuko Izumi and Yoshihiro Matsushita collaborated on?

They have worked on 4 movies together! Their first movie together was Crayon Shin-chan: Dengeki! Buta no Hizume Daisakusen (1998) while their highest rated movie together was Crayon Shin-chan: The Legend Called Buri Buri 3 Minutes Charge (2005). They have not worked together since Tomcat's Big Adventure (2014). They are most known for their animation films together.