Oh Hui Yeon, known simply as Huiyeon, is a South Korean singer, dancer and former member of LIGHTSUM. She is currently attending the Chung-Ang University Affiliated High School, and before debuting, she passed first-round auditions at P-Nation, JYP Entertainment and Snowball Entertainment. She also practiced figure skating in elementary school and won several prizes. She officially debuted in 2021 as the group's sub-vocalist with their 1st single "Vanilla". In October 2022, CUBE Entertainment announced that she was leaving the group but did not disclose a reason for her departure. (Source: Korean = NamuWiki)

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