Reports say that Abhinaya has signed the project long-ago but it was kept under wraps. She will be seen together with Surya in a flashback story in the second-half of the film. It also adds that she will be playing an unglamorous role. However, Shruti Hassan is playing the leading lady in 7 Aum Arivu.
Meanwhile, the makers of the film are planning to launch the audio in a grand manner on March 28 in Chennai. The who's who of the Tamil film industry's are expected to attend the function.