OK Jaanu and Haraamkhor are set to clash at the box office this weekend. And while the audience is eagerly waiting to watch it at the theaters, both the film's actors are doing their bit to promote the film. OK Jaanu is an official remake of Mani Ratnam’s Tamil hit film ‘O Kadhal Kanmani’. It has been directed by Shaad Ali, and produced by Mani Ratnam and Karan Johar. On the other hand, Haraamkhor stars Nawazuddin Siddiqui and Shweta Tripathi, and tells a unique love story.