[3] She previously was a student of Dongguk University in the department of Engineering but dropped out after the urging from her parents.

[4] As she was growing up, her parents wanted her to pursue a career in the medical field due to her mother being a pharmacist and her father being a doctor.

[12] Kim stated that her 'heart hurt' after seeing her fans continuously wait for her to make her debut, so she gave the idol life a second chance as she found herself to be the happiest when she is on stage.

[13] Kim was personally offered to join TripleS by Jaden Jeong, the CEO of Modhaus, as he watched My Teenage Girl.

[14] Kim was announced to be a member and the leader of the sub-unit Acid Angel from Asia on September 25, 2022, and the sub-unit officially debuted on October 27, 2022, with the debut extended play (EP) Access and "Generation" serving as the lead track.

[37][38][39] Since her debut in TripleS, Kim has been named as a "true growth character" as her singing and dancing skills were different and improved from before.

[41] Shortly after her reveal as a TripleS member, she gained attention online for her confident response to netizens concerns about her decision of taking absence from a prestigious university to become a K-pop idol.

[43] Park So-hyun, a member of TripleS and the producer of its sub-unit +(KR)ystal Eyes debut b-side track "Deja-vu" stated the lyric "니 꿈 속 안을 유영해" was written because she was thinking of Yoo-yeon.

Due to this, she had a special article written in Forbes Korea July 2024 issue and was stated to be a role model to teenage fans.