Flare U

Flare U
L-R: Chuei Liyu, and Kang Woo-jin
L-R: Chuei Liyu, and Kang Woo-jin
Background information
OriginSeoul, South Korea
GenresK-pop
Years active2026 (2026)–present
LabelFNC
Members

Flare U (Korean플레어 유; stylized in all caps) is a South Korean musical duo consisting of members Chuei Liyu and Kang Woo-jin. Formed and managed by FNC Entertainment, the duo debuted on May 13, 2026, with the extended play (EP) Youth Error.

History

On January 26, 2026, media outlets reported that a project group consisting of Mnet's Boys II Planet contestants Chuei Liyu, Kang Woo-jin, and Jang Han-eum [ko] was in development. The reports stated that CJ ENM would handle production while FNC Entertainment would manage the group. In response, Jang's agency, ES Nation, stated they were reviewing the proposal while focusing on his solo album release scheduled for March.[1][2]

On March 10, 2026, FNC announced that following discussions, Chuei and Kang would debut as a duo without Jang. Prior to this, after Boys II Planet ended in September 2025, Choi and Kang had appeared together in branded content, attended each other's fan meetings, and served as temporary hosts for the MBC FM4U radio program Close Friend Broadcasting Club.[3] On March 18, the duo was added to the lineup for KCON Japan 2026 at the Makuhari Messe in Chiba, Japan. Their scheduled activities included appearances on the "Dance Stage" on May 8 and 10, and a showcase on the "X Stage" on May 9.[4]

FNC launched the duo's official social media channels on April 24, 2026, announcing the group name Flare U alongside a logo trailer and concept images. According to the agency, the name represents two lights combining to become complete when joined by their fans. Two days later, the promotional schedule for the duo's debut was released along with their debuted date to be on May 13, 2026, with the release of their first EP, Youth Error, and its lead single "Way 2 U", which features themes centered around youth and the duo's shared experiences since appearing on Boys II Planet.[5]

Discography

Extended plays

List of extended plays, showing selected details, selected chart positions, and sales figures
Title Details Peak chart positions Sales
KOR
[6]
Youth Error
Track listing
  1. "Way 2 U"
  2. "Hyper"
  3. "Don't Cry" (우니까)
  4. "Miracle"
  5. "Woo-Hoo"
  6. "Playground" (놀이터)
4
  • KOR: 187,255[6]

Singles

List of singles, showing year released, selected chart positions, and name of the album
Title Year Peak chart positions Album
KOR
DL

[7]
"Way 2 U" 2026 4 Youth Error

Other charted songs

List of other songs, showing year released, selected chart positions, and name of the album
Title Year Peak chart positions Album
KOR
DL

[7]
"Hyper" 2026 30 Youth Error
"Don't Cry" 35
"Miracle" 37
"Woo-Hoo" 36
"Playground" 34

References

  1. ^ Jeong, Jee-won (January 26, 2026). [단독] FNC 손잡은 '보플2' 파생그룹 출범...최립우·강우진·장한음 확정 [[Exclusive] Boys II Planet Spin-off Group Partnered with FNC to Launch...Chuei liyuu, Kang Woo-jin, and Jang Han-eum Confirmed]. JoyNews24 (in Korean). Retrieved June 26, 2026.
  2. ^ Han, Soo-jin (January 26, 2026). [단독] 장한음, 3월 솔로 컴백 후 '보플2' 동지 최립우·강우진과 그룹 활동 유력 [[Exclusive] Jang Han-eum, Likely to Engage in Group Activities with Boys II Planet Comrades Chuei Liyu and Kang Woo-jin After March Solo Comeback]. Ize (in Korean). Retrieved June 26, 2026.
  3. ^ Lee, So-jung (March 10, 2026). [공식] 결국 장한음은 빠졌다...'보플2' 최립우·강우진, 2인조 데뷔 확정 "충분한 논의 끝 결정" [[Official] Jang Han-eum is Ultimately Out...Boys II Planet Chuei Liyu and Kang Woo-jin Confirmed to Debut as a Duo "Decision Made After Sufficient Discussion"]. Ten Asia (in Korean). Retrieved June 26, 2026.
  4. ^ Lee, Da-won (March 18, 2026). 최립우X강우진, K콘 2026 출격 [Chuei Liyu X Kang Woo-jin to appear at KCON 2026]. Sports Kyunghyang (in Korean). Retrieved June 26, 2026.
  5. ^ Flare U debut:
  6. ^ a b Peak chart and sales of Youth Error on the Circle Chart:
  7. ^ a b "Circle Download Chart – Week 20 of 2026". Circle Chart (in Korean and English). Retrieved June 26, 2026.

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