Starting with Seoyeon Yoon, one person per month will be revealed.
Seoyeon Yoon waited two years.
He debuted as soon as he joined the company without any trainees.
She is said to be like a mother because other members rely on her a lot.
Seoyeon Yoon, the number 1 member of Triple S, a 24-member girl group who said she never spent time as a trainee.