How many movies have Makoto Narita and Shōji Sakai collaborated on?

They have worked on 7 movies together! Their first movie together was Groper Train: Massaging on the Way to Work (1982) while their highest rated movie together was Chikan Densha Ano te Kono te (1984). They have not worked together since Crowded Commuter Train Mass Groping (1988).