On December 16th, the musical 'Goong' created another round of success through its performance at the Tokyo International Forum C Hall! SS501's Kim Kyu Jong and Supernova's Sungmo play the role of the crown prince together. As they're both members from two of the representative Hallyu groups in Japan, their double casting brought about huge success in tickets even before 'Goong' hit the stage. All 1,400 seats were completely filled, and the Japanese audience members were reported to be dazzled by the Korean traditional costumes and props, and laughed and cried over the musical's witty lines. Many were seen exiting the theater while humming the musical's main theme songs. 'Goong' was originally a popular manhwa (comic) series before it became a hit TV drama under the same title. Continuing off of the success, the musical version was launched last year with TVXQ's Yunho as the leading role. [gallery link="file" order="DESC"] Source + Photos: Star Today via Nate