How many movies have Hideoki Kusama and Manabu Nakatake collaborated on?

They have worked on 4 movies together! Their first movie together was The Piano Forest (2007) while their highest rated movie together was Evangelion: 3.0+1.0 Thrice Upon a Time (2021). They have not worked together since Evangelion: 3.0+1.0 Thrice Upon a Time (2021). They are most known for their animation films together.