Debut
2010
Agency
About
In 2007, LeeU, under his real name Lee Seunghyun, began appearing on Korean television alongside his father, the trot singer Sul Woon Do. He quickly gained recognition as an ulzzang. In the same year, he decided to begin his solo career under the stage name U.
He continued appearing on television and was promised a solo debut. However, he only made occasional guest appearances on various songs, ultimately never making his solo debut. In 2009, he was introduced as a member of the boy group F.
CUZ. On January 8, 2010, the group officially debuted their first digital single, "Jiggy". On May 21, 2011, CAN&J Entertainment announced that LeeU would be departing from the group in August to pursue a solo career.
On October 16, 2013, he was introduced as a new member of M. Pire, under the stage name Lumin. He debuted with the group on October 30 with their first single album, "New Born".
The group silently disbanded in 2018. Following their disbandment, he put his career on hiatus and appeared to focus on his personal life. In 2020, with the help of his father, he re-entered the entertainment industry, appearing in multiple programs and regaining recognition.
On August 6, 2023, he officially returned to his former group, F. CUZ after being occasionally spotted with the group in 2022. On June 25, 2024, he debuted in F.
CUZ's sub-unit, F. CUZ Sons. On November 10, 2025, he performed on SBS The Trot Show performing his new song "OfficeTel" ahead of it's official release.
Other Members
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