How many movies have Iwao Saitô and Kazuya Hamana collaborated on?

They have worked on 3 movies together! Their first movie together was Premonition (2004) while their highest rated movie together was All-Round Appraiser Q: The Eyes of Mona Lisa (2014). They have not worked together since All-Round Appraiser Q: The Eyes of Mona Lisa (2014).