Lee Ayumi, professionally known as Ayumi in South Korea and Yumi Itō in Japan, is a Japanese-born South Korean singer, actress and television personality based in South Korea. She debuted under the stage name Ahyoomee in 2001, as the leader and lead vocalist of South Korean girl group Sugar, a position she served in until the group's disbandment in 2006. Following the disbandment, Lee embarked on a solo career in South Korea under SM, releasing two digital singles. In 2008, she returned to Japan and began an acting career under the Japanese stage name Yumi Itō. In 2009, she debuted as a solo singer in Japan, under Avex's Rhythm Zone, taking the stage name Iconiq, and released a studio album, an EP, and seven digital singles.