How many movies have Kozo Kusuba and Takeshi Yamazaki collaborated on?

They have worked on 2 movies together! Their first movie together was Doraemon: The New Record of Nobita's Spaceblazer (2009) while their highest rated movie together was Doraemon: Nobita's Great Battle of the Mermaid King (2010). They have not worked together since Doraemon: Nobita's Great Battle of the Mermaid King (2010).