How many movies have Mayumi Tanaka and Yoshio Urasawa collaborated on?

They have worked on 4 movies together! Their first movie together was Doctor Chichibuyama (1988) while their highest rated movie together was Nintama Rantaro the Movie: Ninjutsu Academy - All Hands on Deck! (2011). They have not worked together since Nintama Rantaro the Movie: Ninjutsu Academy - All Hands on Deck! (2011). They are most known for their comedy films together.