How many movies have Gen Urobuchi and Hiroe Nakahara collaborated on?

They have worked on 4 movies together! Their first movie together was Thunderbolt Fantasy: The Sword of Life and Death (2017) and was their highest rated movie together. They have not worked together since Psycho-Pass: Sinners of the System - Case.3 On the Other Side of Love and Hate (2019). They are most known for their animation films together.