Yeh Jawaani Hai Deewani (transl. "This Youth is Crazy"), also abbreviated as YJHD, is a 2013 Indian Hindi-language coming-of-age romantic comedy film directed by Ayan Mukerji, written by Mukerji and Hussain Dalal, and produced by Karan Johar under Dharma Productions. It stars Ranbir Kapoor, and Deepika Padukone in their second film together, alongside Kalki Koechlin and Aditya Roy Kapur. Yeh Jawaani Hai Deewani revolves around four former classmates who meet at a trekking trip where Naina Talwar, a shy medical student, falls in love with carefree brat Kabir "Bunny" Thapar but refrains from expressing her feelings. They soon drift apart but end up meeting again at mutual friend Aditi Mehra's wedding.