How many movies have Futoshi Suzuki and Osamu Ohkubo collaborated on?

They have worked on 2 movies together! Their first movie together was Welcome to the Space Show (2010) 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).