Main vocalist for the all-female K-pop group Dreamcatcher that was formed by Happy Face Entertainment on January 12, 2017. Her stage name is Siyeon.
She was previously a member of the group MINX. She finished in 97th as a participant on the YG survival show MIXNINE.
For the soundtrack of the K-drama Love & Secret, she and Won Joon of Boy's Republic did a duet.
Her English name is Monica. She has an older sister.