How many movies have Ikumi Oka and Keiji Fujiwara collaborated on?

They have worked on 4 movies together! Their first movie together was Code Geass: Akito the Exiled 1: The Wyvern Arrives (2012) while their highest rated movie together was Hunter x Hunter: Phantom Rouge (2013). They have not worked together since Hunter x Hunter: The Last Mission (2013). They are most known for their animation films together.