How many movies have Kan Sawada and Tomokazu Seki collaborated on?

They have worked on 4 movies together! Their first movie together was Doraemon: Nobita and the Green Giant Legend (2008) 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 Adventure in the Antarctic Kachi Kochi (2017). They are most known for their family films together.