2014–2021: Career beginnings and solo activities In 2014, Yeeun made appearances in the music videos for "G.NA's Secret" and "Beep Beep" by
G.NA and
BtoB, respectively. Yeeun also participated in the former's promotional activities as a backing dancer with fellow
Cube Entertainment trainees. On March 10, 2015, Yeeun was revealed as the main rapper of the girl group CLC. The group officially debuted on March 19, 2015, with their debut single, "Pepe", from their debut EP,
First Love. On June 29, Yeeun hosted BtoB's comeback showcase for
Complete with
Na In-woo. On March 20, 2018, Yeeun made her runway debut for Greedilous at the 2018 F/W Hera Seoul Fashion Week, which was held at
Dongdaemun Design Plaza. On May 21,
SBS MTV announced that Yeeun had been selected to be host
The Show starting from the 149th episode, on May 22, 2018, alongside
NCT Dream's
Jeno and
Jin Longguo. She departed the show after the 212th episode, on November 26, 2019. Together with fellow CLC member, Oh Seung-hee, Yeeun featured on the original soundtrack for the drama,
My Fellow Citizens!, with the song "Really Bad Guy", released on April 22, 2019. In May 2020, Yeeun joined the cast of the
Mnet's music competition show,
Good Girl. Yeeun had participated in a total of three songs during the show. She performed "Witch" with
Hyo-yeon,
Cheetah,
Jamie, and Jiwoo of
Kard on 6th episode. She had two solo songs, "Barbie" and "Mermaid" which were featured in the final episode. She promoted the "Barbie" on the 672nd episode of
M Countdown. She later released a special solo music video for "Mermaid" on the CLC YouTube channel in the run-up to CLC's September 2020 release,
Helicopter. In June 2021, Cube Entertainment announced that Yeeun would make her acting debut with her fellow members, Oh Seung-hee and Jang Seung-yeon, in the short film anthology series,
Tastes of Horror. The short film premiered at the
26th Bucheon International Fantastic Film Festival in 2022.
2022–present: Departure from Cube Entertainment, solo debut and EL7ZUP On March 18, 2022, Cube Entertainment announced that Yeeun would be leaving the company after choosing to not renew her contract with the company. On August 11, SuperBell Company revealed that Yeeun had signed exclusive contract with them as a solo artist. Yeeun participated as a featured artist on the single "Nirvana Girl" by
Sorn, which was released on September 15. She later featured on oceanfromtheblue's single "Come Back Home", released on November 22. In March 2023, SuperBell Company announced that Yeeun would be making her solo debut on April 13, with the single album "The Beginning" and its title track "Cherry Coke". Her debut was preceded by the release of the digital single "Strange Way To Love" on March 20. On May 18, SuperBell Company confirmed Yeeun's participation in Mnet's reality competition show
Queendom Puzzle after her appearance in the Pick-Cat team's special performance video which was released on the same day. On August 16, Yeeun placed 7th with a total of 350,517 points in the final episode of Queendom Puzzle, allowing her to debut with the winning group
El7z Up. On July 29, 2024, the digital single "Picky (Feat.
Bang Yong-guk)" was issued as a pre-release for Yeeun's upcoming extended play. On June 28, 2025, Yeeun held her first fan meeting,
HEART STRIKE at H-STAGE in
Hongdae. == Public image ==