How many movies have Fumiya Muramoto and Toru Iwashima collaborated on?

They have worked on 4 movies together! Their first movie together was Malevolent Spirits Selection: "Surveillance Camera" Volume - 13 Consecutive Shots＋1 (2016) and was their highest rated movie together. They have not worked together since Malevolent Spirits: Complete Edition 65 Footage (2019). They are most known for their horror films together.