How many movies have Hideki Tateno and Yûichi Matsui collaborated on?

They have worked on 3 movies together! Their first movie together was Cursed Songs: Chi-Manako (2008) while their highest rated movie together was Ju-on: The Beginning of the End (2014). They have not worked together since Ju-on: The Final Curse (2015). They are most known for their horror films together.