Vijay Sethupathi, who currently has nearly half a dozen Tamil projects in his kitty, believes his purpose as an actor is to be sincere and passionate to the script and not worry about having to prove anything to anybody.His latest Tamil outing "96" was launched on Monday here.He is paired with Trisha Krishnan in the film, to be directed by Prem Kumar.Talking about "96", he told IANS: "It's a love story that unfolds in class 12. The title refers to the year of a school batch. I wasn't sure if Trisha would work with me but she liked the script so much, she came on board."Wouldn't it be challenging to play a school boy at 39?"As a school boy, I appear for brief portion in the film. I don't have to worry about the challenges involved in a role. As an actor, my job is to be sincere and passionate to the script. I don't have to prove anything to anyone," he said.Vijay had known Prem Kumar for long and he calls him a "sensible filmmaker".On the career front, Vijay awaits the release of "Vikram Vedha", "Karuppan" and "Seetha Kathi".