Kim Si-yoon
- Known for
- Acting
- Born
- February 16, 2005 (age 21)
- Birthplace
- Seoul, South Korea
Biography
Kim Si-yoon, known mononymously as Siyoon, is a South Korean rapper, singer and lyricist under MYSTIC STORY. She is a member of the girl group Billlie and its sub-unit Moon Sua X Siyoon.
