How many movies have Seiichi Nakatani and Shingo Nakamura collaborated on?

They have worked on 4 movies together! Their first movie together was Armored Trooper VOTOMS: Case; Irvine (2010) while their highest rated movie together was Code Geass: Akito the Exiled 2: The Wyvern Divided (2013). They have not worked together since Code Geass: Akito the Exiled 3: The Brightness Falls (2015). They are most known for their animation films together.