Since the 1960's, Inui Seishu and Inui Ruika have been known as the world's most renowned supernatural investigators. Ruika is a gifted clairvoyant, while Seishu is the only non-ordained Demonologist recognized by the Catholic Church. Out of the thousands of cases throughout their controversial careers, there is one case so malevolent, they've kept it locked away until now. Heavily based upon The Conjuring