IU's latest release, "Love Wins All," captivated audiences with its heartfelt lyrics and emotive performance. However, what many may not know is the challenging journey IU endured while recording the track.

Suffering in Silence: IU's Battle with Illness

Beyond her stellar portrayal in the music video, IU was actually battling illness throughout the entire three-day filming process.

Confirmed by the editors of "IU TV," she had fallen ill with the flu, making the physically demanding action scenes even more taxing.

During the shoot, IU confided in her co-star BTS's V that the final recording of the track was scheduled for the day after filming wrapped.

Despite postponing the recording multiple times due to her health, IU pushed through, determined to fulfill her commitments.

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A Heroic Effort Amidst Adversity

IU's health struggles were evident during the recording session. Described as "suffering from a severe cold due to overwork and outdoor filming," IU's hoarse voice and frequent coughing breaks showcased the toll her illness had taken.

Composer Donghwan lightened the mood with a joke about the severity of IU's condition, suggesting a headline: "Coughing Up Blood."

Concerns were raised that IU's relentless work ethic could lead to pneumonia if she continued at such a pace.

Unyielding Dedication: IU's Resilience Shines Through

Despite her compromised health, IU delivered a remarkable performance. Praised by the producer for her unwavering commitment and improved vocal quality despite limited stamina, IU's professionalism shone through the adversity.

With a smile of satisfaction, IU wrapped up the recording session, proud of her accomplishment despite the challenges she faced.

Glimpse Behind the Curtain

IU's journey during the recording of "Love Wins All" serves as a testament to her dedication and resilience as an artist.

Over battling illness, she persevered, delivering a performance that resonated with audiences worldwide.

To witness the full story behind IU's triumph, watch the exclusive behind the scenes footage below.

Missed it? Here's IU's "Love wins all" (feat. BTS V).

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Written by Cassidy Jones.