How many movies have Issetsu Sakamoto and Kazuyuki Sakamoto collaborated on?

They have worked on 4 movies together! Their first movie together was Honto Ni Atta! Noroi No Video 11 (2004) and was their highest rated movie together. They have not worked together since True record! Cursed psychic experience 3: 100 shots of vengeful ghosts!! (2006). They are most known for their horror films together.