How many movies have Hiromi Niwa and Yurie Hama collaborated on?

They have worked on 3 movies together! Their first movie together was Fireworks (2017) while their highest rated movie together was Fate/stay night: Heaven's Feel II. Lost Butterfly (2019). They have not worked together since Fate/Grand Order Final Singularity – Grand Temple of Time: Solomon (2021). They are most known for their fantasy films together.