Kim Si-yoon is a South Korean singer and rapper managed by MYSTIC Story. She was officially revealed as a trainee under MYSTIC Rookies on February 18, 2020. Now, she is a member of the girl group Billlie.
Known For:Acting
Birthday:2005-02-16
Place of Birth:Gwangmyeong, Gyeonggi-do, South Korea
Also Known As:Siyoon, Kim Siyoon, Kim Shi Yoon, Kim Shi-yoon, 김시윤
