How many movies have Hisayasu Satô and Narutoshi Ishikawa collaborated on?

They have worked on 5 movies together! Their first movie together was Sex Virgin Unit: Party of Beasts (1985) while their highest rated movie together was Hitozuma korekutā (1985). They have not worked together since Shimai renzoku reipu: Eguru! (1989). They are most known for their horror films together.