Kim So-hyun Deepfake Kim So-hyun (Korean: 김소현; Hanja: 金所炫; born June 4, 1999) is a South Korean actress who began her career as a child actress in 2006 and initially gained public attention for playing a villainous young queen-to-be in Moon Embracing the Sun (2012) and a girl who falls into tragedy in Missing You (2013). She was then affectionately labeled as "Nation's Little Sister". She took on her first leading role in teen drama Who Are You: School 2015 (2015) and since then, has starred in horror comedy Hey Ghost, Let's Fight (2016), historical melodrama The Emperor: Owner of the Mask (2017) and romantic comedy Radio Romance (2018).