H1-KEY Members Profile

Posted 2026-09-18 17:55:19

146

🎤 H1-KEY (하이키) – Members, Profile & Facts

🧠 About

H1-KEY (하이키), pronounced "High-Key," is a four-member South Korean girl group currently under Choi Creative Lab Entertainment. The group debuted on January 5, 2022 with the single album ATHLETIC GIRL. The current lineup consists of Seoi, Riina, Hwiseo, and Yel.

The name H1-KEY is inspired by the English expression "high-key" and reflects the group's identity of confident, healthy beauty, inner strength, and self-esteem. Their early music focused heavily on energetic and athletic imagery before the group expanded toward emotionally uplifting pop-rock and band-inspired songs.

H1-KEY experienced a major breakthrough in 2023 with Rose Blossom, whose Korean title translates to "A Rose Blooming Between Buildings." The song became a word-of-mouth chart success and established H1-KEY as a group known for hopeful lyrics about persistence, resilience, and pursuing dreams.

Their later releases, including SEOUL (Such a Beautiful City), Let It Burn, Summer Was You, and LOVECHAPTER, continued to develop the group's vocal-focused and pop-rock identity.

Debut: January 5, 2022
Current Agency: Choi Creative Lab Entertainment
Members: Seoi, Riina, Hwiseo, Yel
Fandom Name: M1-KEY
Signature Songs: Rose Blossom, SEOUL (Such a Beautiful City), Let It Burn

🧬 Group Identity

Concept: Confident, healthy beauty evolving into emotional and empowering storytelling

Music Style: K-pop, pop-rock, dance-pop, R&B

Known For: Strong vocals, encouraging lyrics, distinctive members, and the sleeper hit Rose Blossom

Image Keywords: confident, resilient, youthful, uplifting, stylish

🌟 Members

Seoi (서이)

Real Name: Lee Ye-jin (이예진)

Position: Leader, Vocalist

Nationality: Korean | MBTI: ESTJ

Birthday: February 12, 2000

Height: 169 cm

Blood Type: B

Leader and oldest member of H1-KEY.
She was previously a trainee at YG Entertainment.
Her specialty is English.
Her representative color is pink.
Her representative animal is the Arctic fox.
She was born in Seocho-gu, Seoul, South Korea.
The members have nicknamed her "Boss Baby."
The nickname reflects the contrast between her youthful appearance and her role as the group's leader.
She was part of H1-KEY's original debut lineup in 2022.
She contributes vocals to the group's increasingly vocal-focused pop-rock sound.

Riina (리이나)

Real Name: Lee Seung-hyun (이승현)

Position: Vocalist

Nationality: Korean | MBTI: ESTJ-A

Birthday: February 21, 2001

Height: 172 cm

Blood Type: B

She was previously a trainee at WM Entertainment.
She competed on Mnet's Produce 48 before debuting with H1-KEY.
She later competed on Queendom Puzzle in 2023.
Her specialties include Japanese and acting.
Her representative color is sky blue.
Her representative animal is the kangaroo.
Hwiseo has described Riina as the group's "talk leader."
Seoi has used the nickname "Honey" for her.
She has a pet dog.
She became the second H1-KEY member to obtain a driver's license.

Hwiseo (휘서)

Real Name: Jo Hwi-hyeon (조휘현)

Position: Main Vocalist, Rapper

Nationality: Korean | MBTI: INFJ

Birthday: July 31, 2002

Height: 169 cm

Blood Type: A

She joined H1-KEY in June 2022 following the departure of original member Sitala.
She previously trained at Source Music, The Black Label, and FNC Entertainment.
Her specialties are vocals and dance.
Her representative color is black.
Her representative animal is a baby seal.
She competed on Mnet's Queendom Puzzle.
She finished first in the final ranking of Queendom Puzzle.
Her victory placed her in the project group EL7Z UP.
She has a dog named Richie and cats named Woody and Angko.
She is known for loving animals and has said she carries cat food in case she encounters a hungry cat.

Yel (옐)

Real Name: Han Shin-young (한신영)

Position: Main Dancer, Rapper, Vocalist, Maknae

Nationality: Korean | MBTI: ISTJ

Birthday: December 25, 2004

Height: 174 cm

Blood Type: A

Youngest member of H1-KEY.
She was previously a trainee at JYP Entertainment.
Her specialties include contemporary dance and acrobatics.
She is the tallest member of H1-KEY at 174 cm.
Her representative color is yellow.
Her representative animal is the red panda.
Hwiseo has referred to her as the group's "dance leader."
She was part of the group's original debut lineup.
Her role combines dancing, rap, and vocals.
Her dance background contributes strongly to H1-KEY's performance-focused stages.

💿 Discography Highlights

ATHLETIC GIRL (2022)
RUN (2022)
Rose Blossom (2023)
Seoul Dreaming (2023)
LOVE or HATE (2024)
Lovestruck (2025)
LOVECHAPTER (2026)

Popular Songs: Rose Blossom, SEOUL (Such a Beautiful City), Time to Shine, Let It Burn, RUN, Summer Was You

🎥 Iconic Music Video

Rose Blossom became H1-KEY's signature breakthrough song and helped bring the group significantly wider recognition in South Korea.

🏆 Awards & Achievements

🏆 "Rose Blossom" reached No. 1 on the Bugs real-time chart in 2023.
🏆 "Rose Blossom" became a notable word-of-mouth sleeper hit on Korean music charts.
🏆 H1-KEY won Rising Star Female Idol at the 2023 Brand of the Year Awards.
🏆 "SEOUL (Such a Beautiful City)" earned H1-KEY their first music show win on The Show in September 2023.
🏆 "Rose Blossom" received nominations at the 2024 Korean Music Awards.
🏆 Hwiseo ranked first on Mnet's Queendom Puzzle and debuted in project group EL7Z UP.
🏆 The group expanded into Japan and launched M1-KEY JAPAN activities.

🌍 Official Links

💬 Fan Notes

💖 H1-KEY's story is closely connected to perseverance. Their breakthrough with Rose Blossom reflected the song's own message about continuing to grow even in difficult surroundings, making it especially meaningful to many M1-KEYs.

Fans appreciate the balance between Seoi's leadership, Riina's charm, Hwiseo's powerful vocals, and Yel's dance ability. Their music has gradually developed from athletic and energetic debut concepts into a recognizable blend of emotional storytelling, uplifting lyrics, and pop-rock influences.