Actor Arvind Swami says that he found acting in "Dear Dad" more challenging than playing a suave and conniving antagonist in last year's Tamil action-thriller "Thani Oruvan".In a Twitter chat, when asked, "'Dear Dad' or 'Thani Oruvan'? Which was more challenging?", Arvind replied, "'Dead Dad'".In "Dear Dad", a coming-of-age story involving a father-son duo, Arvind was seen playing a gay character.The "Roja" actor currently awaits the release of Telugu actioner "Dhruva", a remake of "Thani Oruvan".Talking about his upcoming projects, he said he's really excited about "Sathuranga Vettai 2"."It's turning out to be a very interesting film, and it is great working with (actress) Trisha," he said.