 Complete the following phrase:  In January 2013, Kim starred in military musical The Promise. It was co-produced by the Ministry of National Defense and Korea Musical Theatre Association, to commemorate the 60th anniversary of the signing of the armistice. It ran from January 9 to 20 at the National Theater of Korea, with a cast composed of actors Ji Hyun-woo and Jung Tae-woo, as well as singers Leeteuk of Super Junior, Yoon Hak of Supernova, and Lee Hyun of 8Eight. The musical centered around a group of soldiers who keep a promise made to each other during the 