Lee Siyeon, better known under the stage name Sian, is a South Korean idol born on August 18, 2007. She is mostly recognised as the main vocalist of the girl group USPEER under WM Entertainment.
| Episode |
izna Behind the Scenes 뽀뽀즈나 아니고 이즈나입니다 콘텐츠가 끊이지 않은 4주 근데 naya를 안할 수가 있나? | 'SET THE TEMPO' PROMOTION |
2026 |