How many movies have Kazumi Natsuki and Shōji Sakai collaborated on?

They have worked on 3 movies together! Their first movie together was Za mania: Kaikan seitai jikken (1986) while their highest rated movie together was Subway Serial Rape: Office Lady Hunting (1986). They have not worked together since Subway Serial Rape: Office Lady Hunting (1986). They are most known for their crime films together.