Mammootty spent two and half days listening to 'OM' script
Director Rajkumar Periasamy revealed that Mammootty dedicated two and a half days for thorough screenplay preparation. He wanted to understand character journeys and the entire narrative structure before filming began. During the sessions, the actor raised questions to clarify details regarding his character and others. The film's title, OM, connects to the operations organized by Sai Pallavi's character, while spirituality plays a significant role.