Dhanush signed the film, then titled Ennai Mattum Kadhal Pannu, soon after the success of Thulluvadho Ilamai and the venture was initially set to star Sherin, who appeared alongside him in that film.
The film was announced in late August 2005 with Boopathy Pandian and Dhanush coming together after a previous collaboration in Devathayai Kanden (2004).