In 2015, after the departure of Jieun, Yiyeon was introduced as the newest member of the girl group 1PS, under the stage name Dasol. She was a member of the group until their disbandment sometime in 2015. However, she never made her official debut with them.
- She is best friends with Chung Ha.
- She was a trainee under MLD Entertainment.
- She has a dog named Dosol.
- She is roommates with Simyeong.