There are quite a few K-pop idols who are big fans of BTS, but Le Sserafim’s Yunjin seems to stand out as the most notable ARMY. She could easily be given the title of “president of the celebrity ARMY fanclub” because she has consistently expressed her immense love for the group over the years, while also achieving great success working and closely interacting with her idols.

Before debuting, Yunjin was a true ARMY, owning numerous BTS albums, merch, and memorabilia displayed all over her bedroom. She was also known for posting pictures on “Selca Day”—a long-standing tradition among veteran fans.

After debuting with LE SSERAFIM, she has repeatedly mentioned BTS in interviews as the inspiration behind her idol career. Notably, Yunjin even had the chance to directly participate in j-hope’s HOPE ON THE STREET VOL.1 project, featuring in the track I Don’t Know, and joined BTS members in TikTok dance challenges.

Some fans jokingly say that going from a fangirl to becoming colleagues, sharing the same label, and performing on the same stage is already the “ultimate fangirl dream.” But this might not even be the peak yet—because it seems like BTS and LE SSERAFIM are “cooking soмєтнing” exciting for the future.

This was υиєχρє¢тє∂ly hinted at by Yunjin herself during LE SSERAFIM’s send-off after their concert at Prudential Center on September 3. The girl group is currently on their Easy Crazy Hot 2025 World Tour in the U.S. Alongside their fiery performances, they have also been taking time to interact warmly with fans.

In a viral TikTok video, Yunjin was seen chatting casually with her fans. One of them brought up the topic of her collaboration with j-hope, to which she gave a sweet reaction. Fans then asked why she wasn’t a special guest at his solo tour, and she explained that their busy schedule even kept them from attending j-hope’s concert in Seoul.

But the next part of the conversation really caught everyone’s attention! When fans followed up by asking whether LE SSERAFIM might have any special guests appearing with them in the future, Yunjin teasingly replied, “Uhm, ooo,” while playfully wiggling her fingers. She then added, “You don’t know, soмєтнing might be cooking.”

Netizens went wild over this statement, eagerly wishing she had revealed more about what they’re preparing. Many began to wonder if she was hinting at a BTS member appearing at LE SSERAFIM’s concert, a live performance of I Don’t Know, or even a potential collaboration project between the two groups.

Meanwhile, some fans speculated that she might also have been referring to other celebrities appearing as special guests, not necessarily BTS. While the context of the conversation was about j-hope, the fan’s question had been quite general—and so was Yunjin’s answer.

Of course, no further clarification was given, meaning we’ll only know the truth when soмєтнing actually happens.

Either way, fans are currently buzzing with excitement about the possibility of a BTS and LE SSERAFIM collaboration—and they couldn’t be more thrilled about it:

- Look at her fingers. Its part of the choreo from that gg

- A collaboration? Her expressions I love her. Please do it real

- yall know how bts almost always does 2 collabs- like 1 credited as BTS/member's name and 1 under the collab artist's name. what if.

- Yunjin, you can’t just drop a hint like daaat and leave us hanginggg

- Yunjin do not f*cking play with me. if i hear you and hobi harmonizing during a live performance i might actually start levitating.

- we need that 'i don't know' live performance mannnn. i was waiting for it the entire tour

- im so glad atleast one of them now knows that we need a live performance of the song together. i would cry if it actually happens some day brooo

- Wait what?! My tannies and my fimmies?! Yunjin spill the teaaaaaa!! Sooo excited for whatever this could be

- Imagine BTS and LE SSERAFIM dropping a collab track… it would shake the entire industry. Manifest

- If Yunjin’s hint is about another song together, I think I’ll literally lose my mind. Their vocals and styles would blend so perfectly

- I’ve been praying for a BTS × LE SSERAFIM collab since debut. This might finally be our dream coming true

- Just picturing a stage with both groups performing one song gives me chills. Please, let it happen!