: OK Jaanu stars Aditya Roy Kapur and Shraddha Kapoor . It features a Hindi soundtrack by A. R. Rahman and follows the original plot closely.
O Kadhal Kanmani (Tamil, 2015) Director: Mani Ratnam Original Cast: Dulquer Salmaan, Nithya Menen, Prakash Raj, Leela Samson o kadhal kanmani hindi dubbed
| Original Role | Actor | Character Trait | | :--- | :--- | :--- | | Adi (Aaditya Varadarajan) | | Carefree, tech-savvy, afraid of long-term commitment. | | Tara Kalingarayar | Nithya Menen | Ambitious, practical, wants to study abroad (Paris). | | Ganapathy | Prakash Raj | A classical musician, lonely yet lively landlord. | | Bhavani | Leela Samson | Ganapathy's wife, dealing with early Alzheimer's. | | (Cameo) | Ace choreographer | Appears in the song "Mental Manadhil" | : OK Jaanu stars Aditya Roy Kapur and Shraddha Kapoor