CLASS:y


M25
About
CLASS:y is a K-pop girl group made up of seven members – HYUNGSEO, CHAEWON, HYEJU, RIWON, JIMIN, BOEUN and SEONYOU. The group debuted on May 5, 2022 under M25.
CLASS:y Profile
Group | 클라씨 | CLASS:y |
---|---|
Fandom | 클리키 | CLIKE:y |
Debut | May 5, 2022 +397 Days Since Debut |
Debut Album | CLASS IS OVER |
Latest Release | My Love |
Leader | HYEJU |
Years Active | 2022 – present |
Label | M25 |
Distributor | Kakao Entertainment |
Official Page | ![]() ![]() ![]() |
CLASS:y Members
CLASS:y

HYUNGSEO
06/25/2001
Lead Vocalist

CHAEWON
06/04/2003
Main Vocalist

HYEJU
12/09/2003
Leader
Main Dancer
Lead Rapper

RIWON
01/11/2007
Lead Vocalist
Lead Dancer

JIMIN
11/25/2007
Center
Lead Vocalist

BOEUN
02/11/2008
Lead Vocalist

SEONYOU
03/20/2008
Main Rapper
Lead Dancer
Age (from oldest to youngest)
# | Member | Age |
---|---|---|
1 | HYUNGSEO | 21 |
2 | CHAEWON | 20 |
3 | HYEJU | 19 |
4 | RIWON | 16 |
5 | JIMIN | 15 |
6 | BOEUN | 15 |
7 | SEONYOU | 15 |
Height (from tallest to shortest)
# | Member | Height |
---|---|---|
1 | JIMIN | 173cm |
2 | HYEJU | 165cm |
3 | HYOUNGSEO | 160cm |
4 | CHAEWON | 160cm |
5 | SEONYOU | 160cm |
6 | BOEUN | 157cm |
7 | RIWON | 156cm |
Citizenship
# | Member | Citizenship |
---|---|---|
1 | HYUNGSEO | Republic of Korea |
2 | CHAEWON | Republic of Korea |
3 | HYEJU | Republic of Korea |
4 | RIWON | Republic of Korea |
5 | JIMIN | Republic of Korea |
6 | BOEUN | Republic of Korea |
7 | SEONYOU | Republic of Korea |
CLASS:y Members Profile & Facts
HYUNGSEO

M25
Name | 형서 | HYUNGSEO |
---|---|
Full Name | 명형서 | Myung Hyungseo |
Date of Birth | June 25, 2001 |
Hometown | South Korea |
Citizenship | Republic of Korea |
Height | 160cm | 5′-03″ |
Blood Type | A |
Zodiac Sign | Cancer |
Family | Mother, Father, Older Sister |
Education | Dongduk Women’s University |
Religion | Christianity |
Position | Lead Vocalist |
HYOUNGSEO Facts
She is a Christian. |
Hyoungseo is a former member of BUSTERS. |
She lived in Houston, Texas for 6 years. |
CHAEWON

M25
Name | 채원 | CHAEWON |
---|---|
Full Name | 윤채원 | Yoon Chaewon |
Date of Birth | June 4, 2003 |
Hometown | South Korea |
Citizenship | Republic of Korea |
Height | 160cm | 5′-03″ |
Blood Type | O |
Zodiac Sign | Gemini |
Family | Mother, Father |
Position | Main Vocalist |
CHAEWON Facts
She knew she wanted to become a singer since childhood. |
HYEJU

M25
Name | 혜주 | HYEJU |
---|---|
Full Name | 홍혜주 | Hong Hyeju |
Date of Birth | December 9, 2003 |
Hometown | South Korea |
Citizenship | Republic of Korea |
Height | 165cm | 5′-05″ |
Blood Type | O |
Zodiac Sign | Sagittarius |
Family | Mother, Father, Older Sister |
Education | School of Performing Arts Seoul |
Position | Leader, Main Dancer, Lead Rapper |
HYEJU Facts
She graduated from School of Performing Arts Seoul (Department of Practical Dance) in 2022. |
CHUNGHA inspired her to become a singer. |
RIWON

M25
Name | 리원 | RIWON |
---|---|
Full Name | 김리원 | Kim Riwon |
Date of Birth | January 11, 2007 |
Place of Birth | South Korea |
Hometown | Yeoju, Gyeonggi-do, South Korea |
Citizenship | Republic of Korea |
Height | 156cm | 5′-01″ |
Blood Type | AB |
Zodiac Sign | Capricorn |
Family | Mother, Father, Older Brother |
Education | Eonju Middle School |
Position | Lead Vocalist, Lead Dancer |
RIWON Facts
She started her acting career in 2019. |
She is left-handed. |
JIMIN

M25
Name | 지민 | JIMIN |
---|---|
Full Name | 원지민 | Won Jimin |
Date of Birth | November 25, 2007 |
Place of Birth | South Korea |
Hometown | Wonju, Gangwon-do, South Korea |
Citizenship | Republic of Korea |
Height | 173cm | 5′-08″ |
Blood Type | AB |
Zodiac Sign | Sagittarius |
Family | Mother, Father |
Education | Hanlim Arts School |
Position | Center, Lead Vocalist |
JIMIN Facts
She is a Hanlim Arts School student (Department of Applied Music). |
BOEUN

M25
Name | 보은 | BOEUN |
---|---|
Full Name | 박보은 | Park Boeun |
Date of Birth | February 11, 2008 |
Place of Birth | South Korea |
Hometown | Ulsan, South Korea |
Citizenship | Republic of Korea |
Height | 157cm | 5′-02″ |
Blood Type | O |
Zodiac Sign | Aquarius |
Family | Mother, Father |
Education | Cheongdam Middle School |
Position | Lead Vocalist |
BOEUN Facts
Her sister was born in 2004. |
SEONYOU

M25
Name | 선유 | SEONYOU |
---|---|
Full Name | 김선유 | Kim Seonyou |
Date of Birth | March 20, 2008 |
Place of Birth | South Korea |
Hometown | Gangneung, Gangwon-do, South Korea |
Citizenship | Republic of Korea |
Height | 160cm | 5′-03″ |
Blood Type | B |
Zodiac Sign | Pisces |
Family | Mother, Father, Older Brother, Older Sister |
Education | Cheongdam Middle School |
Position | Main Rapper, Lead Dancer |
SEONYOU Facts
She is a former CAP-TEEN contestant. |
She trained figure skating for three years. |
CLASS:y Discography
Year | Type | Album Title |
---|---|---|
2023 | Digital Single | My Love |
2022 | 2nd EP | Day & Night |
1st EP Z | LIVES ACROSS | |
1st EP Y | CLASS IS OVER |
CLASS:y Facts
The group was formed on a competition show called My Teenage Girls. |
Category: 2022 Debuts