My Love from the Star
From 2013 to early 2014, Kim starred in SBS fantasy romance series "My Love from the Star" alongside Jun Ji-hyun. He also released two singles for the drama's soundtrack, titled "In Front of Your House" and "Promise". It became massively popular across Asia, especially in China; it had over 14.5 billion hits as of February 2014 on the online video platform iQIYI and also sparked trends in fashion, make-up and restaurants.