How many movies have Haruka Tanaka and Yumi Nakayama collaborated on?

They have worked on 3 movies together! Their first movie together was Blood-C: The Last Dark (2012) while their highest rated movie together was Rurouni Kenshin: New Kyoto Arc: The Chirps of Light (2012). They have not worked together since Psycho-Pass: The Movie (2015). They are most known for their action films together.