TVXQ, known as Tohoshinki in Japan, is a South Korean pop duo formed by SM Entertainment, composed of U-Know Yunho and Max Changmin.

SM Entertainment Co., Ltd. is a South Korean multinational entertainment agency established in 1995 by Lee Soo-man. It is one of South Korea's largest entertainment companies and has been responsible for fostering and popularizing the careers of many K-pop stars garnering huge global fanbases. The company operates as a record label, talent agency, music production company, event management and concert production company, and music publishing house. SM Entertainment is known for having led the worldwide K-pop phenomenon and the musical side of "Hallyu", also known as the "Korean Wave", with early overseas successes such as H.O.T., S.E.S. and BoA.