How many movies have Souichi Masui and Yoshito Usui collaborated on?

They have worked on 3 movies together! Their first movie together was Crayon Shin-chan: Invoke a Storm! The Singing Buttocks Bomb (2007) while their highest rated movie together was Crayon Shin-chan: Fierceness That Invites Storm! Operation Golden Spy (2011). They have not worked together since Crayon Shin-chan: Invoke a Storm! Me and the Space Princess (2012). They are most known for their animation films together.