How many movies have Reiko Ikeda and Yukiyo Teramoto collaborated on?

They have worked on 3 movies together! Their first movie together was Doraemon: Nobita's New Great Adventure Into the Underworld - The Seven Magic Users (2007) while their highest rated movie together was Doraemon: Nobita and the New Steel Troops: Winged Angels (2011). They have not worked together since Doraemon: Nobita's Secret Gadget Museum (2013). They are most known for their science fiction films together.