Girl Groups

CLASS:y Members Profile & Facts

CLASS:y Members

CLASS:y (클라씨) is a seven-member Kpop girl group under M25 and Universal Music Japan. The group members consist of Hyungseo, Chaewon, Hyeju, Riwon, Jimin, Boeun and Seonyou. They debuted on May 5, 2022 with the mini album ‘Class Is Over.’ The group was formed on the survival show ‘My Teenage Girl’.

CLASS:y Profile

DebutMay 5, 2022
Active Years2022–present
CLASS:y MembersHyungseo, Chaewon, Hyeju, Riwon, Jimin, Boeun, Seonyou
GenrePop/ Dance
LabelM25,  Universal Music Japan
Oldest MemberHyungseo
Youngest MemberSeonyou
Former MemberN/A
Fandom NameCLIKE:y
Fandom ColorPink

CLASS:y Facts:

– Their greeting is ‘We customize our own! Hello, we are CLASS:y!’.
– CLASS:y was formed on the survival show ‘My Teenage Girl’ in February 2022.
– The rank of the members in the final episode of ‘My Teenage Girl’: Jimin (1st), Seonyou (2nd), Hyungseo (3rd), Hyeju (4th), Riwon (5th), Boeun (6th) and Chaewon (7th).
– The group’s name, CLASS:y, was suggested by the viewers of the survival show and it is a combination of ‘classy’ charms of the members and the survival show’s school themed concept.
– The group uses an acrylic lightstick and doesn’t have an official lightstick yet.
– The members have the following dorm arrangements: Hyungseo has her own room, Chaewon and Hyeju are roommates and Riwon, Jimin, Boeun, and Seonyou share one room.
– They aim to rank on the Billboard charts.
– CLASS:y participated in the survival shows ‘Dancing Dol Stage’ and ‘The Next – Battle of The K-Pop Girl Groups’.
– They made their Japanese debut in June 2022.

Major Works

– Their popular songs include ‘Tick Tick Boom’, ‘SHUT DOWN’ and ‘CLASSY’.


– The group won the “Rookie of the Year” award at Asia Model Awards in 2022.

Website: |

Instagram:  m25_classy | classy_japan_official
Youtube: CLASS:y
Twitter: member_classy | M25_CLASSy | classy_JP
TikTok: m25_classy | classy_japan_official
Facebook: M25.CLASSy
Fancafe: M25.CLASSy

Streaming Platform Links
Genie | Spotify | Bugs | Melon | Apple Music | Deezer

CLASS:y Members Profile

1. Hyeju

Stage NameHyeju (혜주)
Birth NameHong Hye Ju (홍혜주)
PositionLeader, Main Dancer, Lead Rapper, Vocalist
BirthdayDecember 9, 2003
Active Years2022–present
Age20 (in 2024)
Zodiac SignSagittarius
Height165 cm (5’5″)
Weight45 kg (99 lbs)
Blood TypeO
Representative EmojiN/A

Hyeju Facts:

– Hyeju used to practice rhythmic gymnastics for two years. (Weekly Idol EP562)
– She said she has double personality and has another ‘me’
– Her favorite Baskin Robbin’s flavor is ‘Mom is an Alien’.
– Her hobbies include cooking, listening to music, and dancing.
– She enjoys drinking coffee.
– She has a tarot deck and knows how to read tarot cards. 
– She enjoys escape rooms.
– She prefers breakfast as her favorite meal of the day.
– Hyeju broke the flexibility limbo test record on Weekly Idol with 50cm bend.
– Her favorite item is her pajamas.  (늎:New Face)
– She introduces herself as the cutie of the group.
– Her special skill is making dog sounds.
– She tends to get stressed easily.
– She and Kep1er‘s Dayeon were in the same class and dance team.
– She considers her purse a must-have item.
– She likes to eat chocolate.
– She has amazing core strength.
– She likes to wear flapping pink capri pants and baggy polka dot navy pants.
– Hyeju is a black belt in Taekwondo. (CLASS:y World Epi 1)
Read More Facts About Hyeju

Streaming Platform Links
Genie | Melon | Bugs

2. Hyungseo

Stage NameHyungseo (형서)
Birth NameMyung Hyung Seo (명형서)
PositionLead Vocalist
BirthdayJune 25, 2001
Active Years2022–present
Age22 (in 2024)
Zodiac SignCancer
Height163 cm (5’4″)
Weight43 kg (95 lbs)
Blood TypeA
Representative EmojiN/A

Hyungseo Facts:

– Hyungseo said her first impression is calm and quiet. (팬바타 FANVATAR)
– She is skilled at fast reading and tongue twisters.
– She revealed that once the group only ate gamtajang for dinner for a week and a half. (Weekly Idol EP562)
– She said her TMI is that she is pretty cute.
– She likes shopping.
– She is the moodmaker of the group according to Chaewon.
– She loves to eat food and is also good at cooking.
– She is fluent in English because she used to live in Houston, Texas for seven years. (엔터로 │ Entero)
– She loves to eat Korean food. (늎:New Face)
– She hates orange juice.
– Hyungseo is incharge of the visuals in CLASS:y.
– She tried figure skating in 4th grade but didn’t continue.
– She considers Kim Yuna as her role model.
– She is confident in ‘gluteus medius exercises’. 
– Her strength is being a good talker, but she tends to overthink things. (Weekly Idol Self Profile)
– She is close with Yunjin from LE SSERAFIM.
– Two irresistible things for her are hunger and vibing.
Read More Facts About Hyungseo

Instagram: myung_h_seo

Streaming Platform Links
Genie | Melon | Bugs

3. Chaewon

Stage NameChaewon (채원)
Birth NameYoon Chae Won (윤채원)
PositionMain Vocalist
BirthdayJune 4, 2003
Active Years2022–present
Age20 (in 2024)
Zodiac SignGemini
Height161 cm (5’3″)
Weight42 kg (93 lbs)
Blood TypeO
Representative EmojiN/A

Chaewon Facts:

– Chaewon introduces herself as the baby rabbit of the group. 
– She considers her gentle and calm nature as her strength.
– Her favorite ice cream is Dwaeji Bar ice cream.
– She can’t eat vegetables.
– She considers shameless cute acts as her specialty.
– She enjoys watching action-themed movies.
– She was called ‘Rabbit,’ when she was young but now prefers ‘Little Bunny.’
– She can watch horror movies without feeling scared. (늎:New Face)
BIGBANG and SISTAR are her favorite artists.
– Her hobbies include playing FORTNITE, singing, and reading books.
– Black is her favorite color.
– She said her weakness is that she tends to be lazy. 
– Chaewon has a good memory and can memorize a long list of things easily.
– Her favorite sport is archery.
– She likes listening to the song ‘Matsuri’ by Fuji Kaze. (VANITYMIX)
Read More Facts About Chaewon

Streaming Platform Links
Genie | Melon | Bugs

4. Riwon

Stage NameRiwon (리원)
Birth NameKim Ri Won (김리원)
PositionLead Dancer, Lead Vocalist
BirthdayJanuary 11, 2007
Active Years2022–present
Age17 (in 2024)
Zodiac SignCapricorn
Height156 cm (5’1″)
Weight40 kg (88 lbs)
Blood TypeAB
Representative EmojiN/A

Riwon Facts:

– Riwon is considered a selfcare queen.
– She loves to eat yougurt.
– She enjoys watching dramas and collecting cute things as her hobby.
– She likes purple color.
– Members picked her as someone who would be the teacher’s favorite.
– She is considered the mom of the group in CLASS:y.  (늎:New Face)
– She has a social personality.
– Her hobby is massage.
– She is a fan of the girl group TWICE.
– Her favorite Baskin Robbins flavor is ‘Strawberries in Love’.
– She struggles to make decisions which is one of her disadvantages. 
– Riwon is jealous of Jimin’s tall height. (ELLEgirl)
– She introduces herself as a member who is neither the oldest or the youngest.
– She is good at waking up in the morning for schedules.
– Jimin picked her as someone whose personality doesn’t match their appearance.
She is a good listener and considers it her advantage.
– She likes to organise things.
– Her special skill is making animal sounds. (Weekly Idol EP562)
– She is left-handed.
Read More Facts About Riwon

Youtube: 리원love
Fancafe: 070111 (Ri-Won)

Streaming Platform Links
Genie | Melon | Bugs

5. Jimin

Stage NameJimin (지민)
Birth NameWon Ji Min (원지민)
PositionLead Vocalist, Center
BirthdayNovember 25, 2007
Active Years2022–present
Age16 (in 2024)
Zodiac SignSagittarius
Height172 cm (5’8″)
Weight51 kg (112 lbs)
Blood TypeAB
Representative EmojiN/A

Jimin Facts:

– Jimin has difficulty in pronouncing the sound ‘zu’ in Japanese. (VANITYMIX)
– Her nickname is ‘Jiphrodite’ which combines the name ‘Jimin’ and ‘Aphordite’, the greek goddess of beauty.
– She has a cheerful and bright personality.
– She introduces herself as the group’s pretty member and a prodigy with great physique.
– She gained fame for her visuals before the airing of My Teenage Girl.
– She often touches her hair out of habit.
– Her favorite ice cream is Bbang red velvet.
– Jimin watched the drama ‘Crash Landing on You’ three times because it makes her feel bubbly. (늎:New Face)
– She loves listening to the song “Black Mamba” by aespa.
– She is close with Kim Yuyeon of tripleS.
– She is skilled at random dance play.
– She describes herself with the hashtags: #Leader, #PowerVocal, #Funny_Laughter.
– She is also nicknamed ‘God-Baby.’
– She loves to watch Netflix.
Read More Facts About Jimin

Streaming Platform Links
Genie | Melon | Bugs

6. Boeun

Stage NameBoeun (보은)
Birth NamePark Bo Eun (박보은)
PositionLead Vocalist
BirthdayFebruary 11, 2008
Active Years2022–present
Age16 (in 2024)
Zodiac SignAquarius
Height157 cm (5’1″)
Weight39 kg (86 lbs)
Blood TypeO
Representative EmojiN/A

Boeun Facts:

– Boeun revealed that once she was feeling down and Hyeju offered to buy her snacks to cheer her up and she accidently bought so much and made Hyeju flustered. (Weekly Idol EP562)
– Her charming point is her lips which resemble a duck’s beak.
– Three things that bring her happiness are fans, members and singing.
– She considers her voice as her advantage.
– She introduces herself as the group’s fairy and a baby duck.
– She likes to eat konnyaku jellies in Japan. (VANITYMIX)
– People often say she resembles BLACKPINK‘s Jennie.

– She considers singing as both her hobby and talent.
– She likes to eat hot dogs.
– She said her personality changes from day to day. 
– She likes listening to music in her spare time.
– Her favorite ice cream is OOO Ice cream stick. (클리키 시선)
– She wanted to be a barista.
– Boeun likes the song ‘Yours’ by Raiden, EXO’s Chanyeol (ft Lee Hi, Changmo). (FANVATAR Enter)
– She tends to worry a lot and considers it her disadvantage.
– She is scared of animals.
– Boeun is more mature than her age according to Hyungseo. 
– She is a fan of Hyolyn.
Read More Facts About Boeun

Streaming Platform Links
Genie | Melon | Bugs

7. Seonyou

Stage NameSeonyou (선유)
Birth NameKim Kim Seonyou (김선유)
PositionMain Rapper, Lead Dancer, Vocalist, Maknae
BirthdayMarch 20, 2008
Active Years2022–present
Age16 (in 2024)
Zodiac SignPisces
Height160 cm (5’3″)
Weight43 kg (95 lbs)
Blood TypeB
Representative EmojiN/A

Seonyou Facts:

– Seonyou was complimented by AIKI for her dancing skills.
– She introduces herself as the group’s cute and youngest member.
– She said her weaknesses are narrow vision, forgetfulness and airheadedness. (CLASS:y World Epi 1)
– She likes to use fragrant sleep share, peachy body spray and nightsky moodlamp before sleeping.
– She has a talent for guessing songs correctly.
– She is good at talking and sports.
– She hates eating vegetables such as scallion, onion, paprika, pepper, pumpkin, mushroom, eggplant and carrot. (늎:New Face)
– She dreamed of becoming a singer after listening to IU’s ‘Love Poem’.
– She thinks for a long time before buying a drink from the vending machine.   (팬바타 FANVATAR)
– She likes to eat chicken feet.
– Her special skill is mimicking Shin-chan. 
– Seonyou is in the group’s dance line along with Hyeju and Riwon.
– Her nicknames include ‘Baby Hamchi’, ‘Tanya’ and ‘dance genius.’
– Her hobbies include drawing, music, and dancing.
– She likes to eat malatang.
Read More Facts About Seonyou

Instagram: @sun_u08
Youtube: [Sunflu] Sun U

Streaming Platform Links
Genie | Melon | Bugs

CLASS:y Photos

Note:  Which CLASS:y members caught your eye first? Let us know your story in the comments down below!

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Lilian Chen

Yo! I'm Lilian, an Ahgase and a curious wordsmith on a never-ending quest for knowledge. Don't hesitate to spot any slip-ups in my work and feel free to reach out with additional facts & insights! ^^

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