How many movies have Shōji Sakai and Yoshirô Satô collaborated on?

They have worked on 2 movies together! Their first movie together was Inkô Kazoku: Gibo to Nyôbô no Imôto (1997) and was their highest rated movie together. They have not worked together since YADO: Tsukiyono-mura Yamanba Densetsu (2002).