Sung Si-kyung Pauses YouTube Following Manager Betrayal  조선일보Sung Si-kyung suffers financial loss from longtime manager, agency says case ‘serious’  The Korea TimesSung Si Kyung’s Agency Releases Statement Regarding His Ex-Manager’s Financial Misconduct  SoompiSung Si-kyung is on the verge of cancellation of the performance becau  SportsChosun“Taking a Week Off from YouTube”… Was Sung Si-kyung Deeply Shocked by Manager’s Betrayal?  매일경제