ITZY's Lia Introduces Her Brother — Fans Are Losing Their Minds

ITZY's Lia has given her fans something they didn't know they needed: a full day out with her younger brother, Junsu, captured in a YouTube video that quickly became the talk of the K-pop community this week. Released on May 20 on Lia's personal channel, the video marks the first time the idol has ever publicly introduced her brother — and the reactions from fans and casual viewers alike have been nothing short of enthusiastic.

Lia, who returned to active ITZY promotions after a health-related hiatus, has been steadily connecting with fans through her solo YouTube channel. But this particular upload struck a different chord: the rare, unguarded look at her personal life landed with a warmth that reminded everyone why Lia's authenticity has always been one of her strongest qualities.

The Makeover That Won the Internet

The video, titled "리아의 남동생 훈남생정" — loosely translated as "Lia's Younger Brother's Handsome Makeover Journey" — follows Lia as she takes on the role of one-day stylist for Junsu, who openly described himself as never having been in a relationship. Her mission: to give her brother a complete transformation, from grooming to wardrobe.

The day started at a beauty salon, where Junsu got his eyebrows tidied and his hairstyle refreshed. As Lia observed the work, she pointed out some endearing family traits: "These are our family's signature eyebrows," she said, before adding with a laugh that her brother has "a slightly crooked nose like Dad's." The easy banter between the two set the tone for a video that felt less like a staged celebrity moment and more like a genuine sibling hangout that happened to be filmed.

From the salon, the pair headed to a select shop to complete the transformation. Lia carefully considered her brother's body type as she helped him pick out a jacket and trousers, demonstrating a sharp sense of styling that her fans have long appreciated from her ITZY work. The final touch came when both siblings ended up in matching blue-checked shirts — an unplanned move that quickly became the most-talked-about detail of the whole video. The "couple look" moment went viral almost immediately, with fans sharing screenshots across social media platforms.

At the end of the video, Junsu reflected on the experience with genuine gratitude: "I was able to have a productive day. I am thankful to my sister for doing this for me." The sincerity of his response, paired with the obvious warmth between the two, made the video feel like an unusually real slice of life from someone whose day-to-day existence typically stays firmly out of the public eye.

Why Lia's Decision to Share This Moment Matters

Near the end of the video, Lia addressed the audience directly about why she chose to introduce her brother now. "I thought a lot about whether to introduce my brother," she admitted, "but I decided to introduce him because so many people have been kind to him." It was a quiet, thoughtful explanation — but it says something meaningful about where Lia is in her personal and professional life right now.

Lia's road back to full activity has not been without its challenges. She took an extended break from group activities due to health reasons, and her return has been gradual and deliberate. Since launching her personal YouTube channel, she has been rebuilding her connection with fans on her own terms — introducing her home, sharing daily moments, and now, for the first time, bringing in her family.

For a K-pop idol, this kind of personal disclosure is not a small thing. The industry often places enormous expectations on its artists to maintain a carefully curated image, and introducing a younger sibling — with all the family resemblance and personal stories that come with it — is a choice that requires trust in the fanbase. Lia's decision to make that move suggests she feels that trust has been earned.

ITZY's Lia: A Quick Background

Lia, born Choi Ji-su in 2000, is one of five members of ITZY, a girl group under JYP Entertainment that debuted in 2019. The group — alongside Yeji, Ryujin, Chaeryeong, and Yuna — quickly established themselves as one of the most distinctive acts in the fourth-generation idol landscape, known for their high-energy performances, sharp choreography, and the "ITZY" brand identity built around self-acceptance and individuality.

Lia took an extended leave of absence from group activities in 2023 due to health issues, during which the remaining four members continued promotions. Her return to full activities was celebrated widely by fans, and the group's subsequent work together has been received with relief and enthusiasm from a fanbase that spent her absence expressing consistent support and concern for her well-being.

Her personal YouTube channel, "LIA CHOI," has become one of the more engaging idol channels to emerge in recent years — partly because of Lia's willingness to show aspects of her personality and daily life that don't always surface in group content.

Fan Reactions and What Comes Next

The response to the video has been, in a word, overwhelming. Fan communities across Twitter, TikTok, and Korean platforms have been flooded with clips from the makeover, commentary on the siblings' resemblance, and appreciation for Lia's openness. Many fans noted that seeing her relaxed and genuinely happy in the video — joking around, clearly at ease with her brother — was itself something worth celebrating.

As for Junsu, his brief time in front of the camera earned him his own small fan following almost immediately, which probably was not what he expected when he agreed to be part of his sister's YouTube video. The combination of a good-natured personality, his obvious closeness with Lia, and the internet's fondness for a good sibling dynamic proved to be a formula that worked.

ITZY's upcoming schedule has not yet been formally announced, but the group has been active in various individual and group-level projects throughout 2026. With Lia's YouTube presence growing and the group's fan engagement showing no signs of slowing, the timing of this video feels less like a one-off personal moment and more like the latest chapter in a comeback story that fans have been rooting for since 2023.