Fans of actress Lee Seo Yi are mourning her death after discovering what many are calling a hauntingly poignant final social media post, shared just days before her passing on June 20 at age 43.

On June 13, Lee uploaded a music video of LA Park PD's "Didn't Say a Word" on Instagram, featuring sign language and soft natural lighting.

Alongside the clip, she wrote a deeply personal message: "Sign language version MV of LA Park PD's # Did n'tSayAWord... It's very late, but RIP, Oppa..."

"Missing you today as brightly as I look in this clip. A bit dazed... just checking in to say I'm alive," she added, sparking speculation among fans that the post may have been her way of saying goodbye.

The video, now removed from the platform, included footage of Lee from earlier in her career. "Oppa, did you take it with you?" she wrote. "Thank you for leaving me looking so beautiful in my prime." Her words, previously interpreted as a tribute to a loved one, are now being reread as a farewell to life itself.

After people learned that she had passed away, fans left comments such as "No more pain," "May you find peace where you are," and "RIP, actress Lee Seo Yi."

The emotional resonance of her final post has only intensified as tributes continue to pour in.

"She was always so artistic and sensitive. That video was her poetry," one fan wrote on a Korean forum.

Lee, known for her supporting roles in dramas including The Divorce Insurance (2025) and Cheongdam-dong Scandal, had also developed a loyal following through her work as a florist and her candid social media presence.

Friends and fans were reportedly shocked by her sudden death, as she had remained publicly active and appeared cheerful in recent updates.

"She seemed like she was doing well. No one expected this," a close acquaintance said, speaking anonymously to local media.

While the cause of death has not been officially disclosed, the tone of her final post has led to widespread speculation and sorrow among the public.

"She said she was just checking in to say she was alive," one commenter noted. "Now we're all wishing we had checked in on her, too."

Lee's legacy as a quiet yet impactful figure in Korean entertainment and her gentle final words echo in the hearts of fans saddened by the loss of another brilliant artist.