K.Will debuted in the U.S.A. on "THE THREE ROMANTICISTS" concert along with Kim Bum Soo and Yoo Seung-Chan on March 5, 2010.
K.Will debut di Amerika Serikat pada konser "THE THREE ROMANTICISTS" bersama dengan Kim Bum Soo dan Yoo Seung-chan pada 5 Maret 2010.