How many movies have Hiroaki Kawatsure and Mac P. Forever collaborated on?

They have worked on 6 movies together! Their first movie together was Strip Mahjong: Battle Royale (2011) while their highest rated movie together was Strip Mahjong: Academy Z (2013). They have not worked together since Strip Mahjong Idol Sengoku Era (2015). They are most known for their horror films together.