How many movies have Nobuhiro Yamashita and Yoshimi Nozaki collaborated on?

They have worked on 4 movies together! Their first movie together was Mechakowa 'Norowareta Shinrei Firumu' Kyōgaku no Dokyumento (2009) while their highest rated movie together was The Drudgery Train (2012). They have not worked together since The Drudgery Train (2012). They are most known for their horror films together.