How many movies have Narutoshi Ishikawa and Shōji Sakai collaborated on?

They have worked on 2 movies together! Their first movie together was Office Lady Rape: Disgrace! (1986) while their highest rated movie together was Shimai renzoku reipu: Eguru! (1989). They have not worked together since Shimai renzoku reipu: Eguru! (1989).