How many movies have Shuichi Seki and Tetsuo Yasumi collaborated on?

They have worked on 4 movies together! Their first movie together was The Boy and the Sea Turtle (2002) while their highest rated movie together was Doraemon: The New Record of Nobita's Spaceblazer (2009). They have not worked together since Doraemon: The New Record of Nobita's Spaceblazer (2009). They are most known for their animation films together.