How many movies have Ayako Okuhira and Hisao Usui collaborated on?

They have worked on 4 movies together! Their first movie together was Trick the Movie: Psychic Battle Royale (2010) while their highest rated movie together was SPEC: Close~Incarnation (2013). They have not worked together since SPEC: Close~Reincarnation (2013). They are most known for their mystery films together.