How many movies have Hiroaki Hirakata and Junji Inagawa collaborated on?

They have worked on 3 movies together! Their first movie together was Junji Inagawa's Short Horror Cinema: Horror of Legend (2002) while their highest rated movie together was J-Horror Anthology: Legends (2003). They have not worked together since J-Horror Anthology: Legends (2003). They are most known for their horror films together.