Kim Si-yoon
- Cast
- Born
- 16 February 2005
- Place of birth
- Seoul, South Korea
- Known for
- Acting · Perfect Girl, Elena
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.
Filmography
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