Tohoshinki debuted Process_start in Japan as a five-member pop group in April 2005 , and held their first Japanese tour Traveling , the Heart , Mind , and Soul Tour Traveling , in 2006 .

TVXQ originally debuted Process_start as a five-member group in December 2003 , with members U-Know Yunho , Max Changmin , Hero Jaejoong , Micky Yoochun , and Xiah Junsu .