On September 9, 2020, she was revealed as the second member of STAYC. Her prologue teaser was released on October 14, 2020.
III. Sumin Facts
- She was originally going to be a contestant on Produce 48.
- She and Yoon are roommates.
- Specialty: making seaweed soup, eyebrow wave.
- She trained for 5 years and 6 months.
- She’s the oldest member.
- Charming point: Various Expression, Smiling face.
- She auditioned for Kpop Star.
- She is a former trainee under Play A Entertainment.
- Hobbies: listening to music, reading books.
(credits to kprofiles for these facts)