How many movies have Masayoshi Nakai and Tadanobu Hirao collaborated on?

They have worked on 3 movies together! Their first movie together was Celluloid Nightmares (1999) while their highest rated movie together was Red Room 2 (2000). They have not worked together since The Day Shuffle !! Flock of Dead Spirits (2000). They are most known for their horror films together.