Their 2003 studio album "Missing You" featured more tracks that departed from bubblegum music and emphasized their vocal skills for an image as serious artists. Performing commercially well, the album gave the duo many awards including "Bonsang" award from SBS Gayo Daejun and Korea Music Awards. This period is remembered for the highly publicized death of their manager, who was also the manager of BoA, another Korean singer. On a variety show, both members recalled this incident as an emotionally hard time for them. Hwanhee was especially shocked, because he was on the same vehicle with his manager just hours before the incident.