TVXQ are the first Korean idol group invited to perform at the Kōhaku Uta Gassen , Japan 's most prestigious New Year Eve 's music festival . They performed there three times , from 2008 to 2011 . TVXQ are the first Korean music group to headline their own concert at the Tokyo Dome ( The Secret Code Tour in 2009 ) , the first foreign group to embark on a five-Dome tour in Japan ( Time Tour in 2013 ) , and the first foreign artists to perform at the Nissan Stadium ( Time Tour ) . Their 2017 Begin Again Tour was the highest-attended tour ever held by a foreign music act , bringing over a million people
Time Tour
Time: Live Tour 2013
TVXQ