Kim Hyun-joo, better known by the stage name Han Ga-in, is a South Korean actress and model. She starred in television series Yellow Handkerchief and Terms of Endearment early in her career, and became a sought-after model in commercials. Her projects in 2012 were hugely successful, with her period drama Moon Embracing the Sun topping the TV ratings chart, and her film Architecture 101 becoming a box office hit.