In November 2024, just months before SM Entertainment officially unveiled their highly anticipated girl group Hearts2Hearts, photos resembling Kim Yuni surfaced online, sparking speculation among K-pop fans about whether she would be included in the debut lineup.
After disappearing from public view following the group’s debut, the beloved trainee made a triumphant return on the third episode of SBS’s Our Ballad on October 7.

Kim Yuni performed Yoon Sang’s “Shade of Parting”, aiming to advance in the competition while reflecting on her journey as a former idol trainee. Kim Yuni revealed she trained under SM Entertainment for five years, overlapping with future aespa and Hearts2Hearts members.
“I posted a ballad video on YouTube, and SM Entertainment reached out. I moved from Daejeon to Seoul to begin training during my second year of high school,” she said.
Despite her talent, Kim Yuni was ultimately left out of the Hearts2Hearts debut lineup. Watching her former peers perform was emotionally complex: “I watched their debut stage from home it felt strange and a bit sad to see friends I spent every day with performing on such a big stage. It reminded me of the despair I felt returning to Daejeon after being eliminated from the debut lineup.”
Her heartfelt rendition of “Shade of Parting” resonated strongly with judges. Judges praised her performance, noting her dedication and potential as a main vocalist.

- Cha Tae-hyun: “I’m not sure how your trainee period ended, but this is definitely your debut stage. You’ve shown courage.”
- Danny Koo: “People are ruthless—but you handled it beautifully.”
- Park Kyung-lim: “Each note was heartfelt. Listening to this song on the train back to Daejeon after training, the emotions were palpable. Very earnest.”
- Mimi: “It’s amazing that after five years of idol training, you’re challenging yourself with ballads. That’s truly admirable.”
By the end of her performance, her acceptance light turned on, marking a triumphant moment as she earned her place in the competition, prompting cheers from judges and fellow contestants.
Fans responded enthusiastically online, expressing support for her comeback and her emotional journey:
- She sings so well. I hope she continues on this path and finds great success.
- She looks like Wendy and has a beautiful voice too.
- Being cut right before debut must have been so hard… but she’s still young and talented.
- Her voice has that Wendy-like quality—truly captivating.
Kim Yuni’s story highlights the challenges faced by long-term K-pop trainees. From missing a debut with Hearts2Hearts to reemerging as a powerful contender on Our Ballad, her determination and talent continue to inspire fans.
Sources: Naver

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