Actor Vivek Oberoi, who is sharing screen space with Ajith Kumar in upcoming Tamil actioner "Vivegam", says he finds his co-star to be very humble and caring. He is enjoying being pampered on the sets of the film."Ajith Anna (elder brother) is the most humble, caring human being, absolute gem! Loving every minute of being pampered by all in Chennai! Thank you for the love," Vivek tweeted on Thursday.The film marks Vivek's Tamil debut. He is being introduced in the role of a suave antagonist.Being directed by Siva, the film also stars Akshara Haasan and Kajal Aggarwal in the lead.Ajith plays an Interpol agent in the film, which has been predominantly shot across exotic locations in Europe.Being produced by Satya Jyothi Films, the film has music by Anirudh Ravichander.