Birthday
Feb 16
2005
21 yrs
Zodiac
Aquarius
Height
173 cm
Blood Type
B
Nationality
South Korean
Debut
2021
Agency
Real Name
Kim Si-yoon (김시윤)
About
In 2009, when she was 4 years old, Siyoon appeared in the SBS reality show ' as a part of the Baby Wonder Girls where they performed "Nobody". She was officially revealed as a trainee under MYSTIC Rookies on February 18, 2020. She was later announced as a member of MYSTIC STORY's upcoming girl group Billlie.
The group debuted on November 10, 2021 with their first mini album The Billage of Perception : Chapter One.
Other Members
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