After Radha and Karthik came together for Alaigal Oivathillai, a couple of decades ago now Goutham son Karthik and Thulasi, daughter of Radha will make their debut with Kadal by acclaimed filmmaker Mani Ratnam.
Initially Samantha was cast as heroine. But when she opted out , she was replaced by Thulasi.
The movie also has Arjun and Arvindsamy. Music is by A R Rahman. Thulasi's elder sister Karthika is a popular actress in Tamil and Telugu cinema after a slew of hits recently.