B.YOUR SIDE Members Profile and Facts

B.YOUR SIDE (비유어사이드) is a 4-member South Korean boy group under STARSTORY Entertainment. The group was formed through FANPICK (2025), and consists of Youha, Riyu, Haneul, and Kael. They debuted on June 29, 2026, with their first digital single, “B.YOUR SIDE”. 

Group Name Meaning: N/A
Official Greeting: “Always be There! Hello. We are B.YOUR SIDE!”

B.YOUR SIDE Official Fandom Name: BYSOU
Fandom Name Meaning: N/A
B.YOUR SIDE Official Color: N/A

B.YOUR SIDE Official Logo:

Official SNS:
Instagram: @b.yourside_offcl
X: @BeYS_offcl
TikTok: @b.yourside_offcl

B.YOUR SIDE Member Profiles:
Youha (Rank 2)

Stage Name: Youha (유하)
Birth Name: Song Moon Kyu (송문규)
Position(s): Leader
Birthday: April 5, 2000
Zodiac Sign: Aries
Chinese Zodiac Sign: Dragon
Height: 178 cm (5’10”)
Weight: 60 kg (132 lbs)
Blood Type: N/A
MBTI Type: ISTP
Nationality: Korean
Instagram: @im.wet.noodle
TikTok: @youha0405

Youha Facts:
– He is a former member of HALF&HALF (2024-2025) under his birth name.
– He previously went by the name Dawon.
– Youha is inspired by RIIZE, BLACKPINK, Baekhyun, Taeyeon, and IU.
– He describes his personality as a mixture of Sadness and Joy (characters from the animated movie Inside Out).
– He wanted to become an idol because he wants to sing songs that comfort others.
– Before joining his previous company, he worked numerous part-time jobs, including as an office worker and a barista.
– His favorite music genres are acoustic, indie, and K-POP (except for rap).
– He became interested in making music in his third year of middle school and also practiced Korean traditional music instruments during this time.
– Youha’s specialties include singing with a warm voice and lying down.
– His hobby is relaxing with his cats.
– Two of his favorite songs include “Love Wins All” by IU and “To.X” by Taeyeon.
– Youha dislikes carrots.
– His charming points are his lips and vocal tone.
– His favorite color is blue.
– Youha heard about FANPICK through a Korean friend who had been supporting him since his activities in Japan.

Riyu

Stage Name: Riyu (리유)
Birth Name: N/A
Position(s): Main Dancer
Birthday: July 9, 2001
Zodiac Sign: Cancer
Chinese Zodiac Sign: Snake
Height: N/A
Weight: N/A
Blood Type: N/A
MBTI Type: N/A
Nationality: American
Instagram: @whereareriyu / @ki_to.__
TikTok: @whereareriyu / @ki_to.__
YouTube: Ki To

Riyu Facts:
– His hometown is San Francisco, California, USA, but he moved to South Korea in 2026. 
– He is also a member of the dance team NONAME under the name Kito.
– He was previously a member of the TikTok group K-ONE.
– Riyu made his debut as a soloist on September 1, 2022, with the digital single “Layin”.
– His mother is Chinese and his dad is Vietnamese.
– He starred in the music video for “DELULU” by Jayi.
– He participated in Benefit Cosmetics’ Lip and Cheek tint campaign and has modeled for Starbucks, McLaren, K-Swiss, and Mariot Bonvoy.
– Riyu has been holding dances classes since 2024 or even earlier.
– He appeared as a backup dancer in the music videos for MONSTA X‘s “Magic”, ZEROBASEONE‘s “TOP 5”, Xnghan&Xoul‘s “GLOW”, DIVA-X‘s “Out of Control”, LE SSERAFIM x Overwatch’s “Made My Night”, and for BIGBANG‘s Taeyang on M COUNTDOWN.
– He has a tattoo on his left arm.
– His role models dancing wise are EXO‘s Kai and SHINee‘s Taemin.
– Riyu participated in the GOLDEN ARENA K-POP Talent Competition in March 2026 and achieved first place, winning ₩600,000.
– He appeared on Street World Fighter: Director’s War (2026) for the 1st mission as part of the megacrew.
– He was teased as a member on September 3, 2026, through the announcement of the group’s first comeback and was officially revealed through concept photos shared on September 7.
– Riyu decided to pursue being an idol because he has always loved singing and dancing and seeing how hardworking people are and how many nice people you can meet made him go down this path.

Haneul (Rank 1)

Stage Name: Haneul (하늘)
Birth Name: Kim Ha Neul (김하늘)
French Name: Kim Ciel
Position(s): Center, Producer
Birthday: February 18, 2002
Zodiac Sign: Aquarius
Chinese Zodiac Sign: Horse
Height: 172 cm (5’8”)
Weight: N/A
Blood Type: A
MBTI Type: INFP
Nationality: French-Korean
Instagram: @haneul.ciel
TikTok: @haneul.ciel

Haneul Facts:
– He was a contestant on FAN PICK (2023), where he was eliminated in the final.
– Haneul was cast for the recent season of the show by the same director from the first edition. She thought he was not appreciated enough back then.
– He speaks Korean, French, and English and has studied various other languages, including German, Chinese, and Japanese.
– An artist he admires is WOODZ.
– He prefers cool tones, with his favorite color being blue.
– His solo fandom name is Polaris.
– Haneul strives to be a safe space for his fans and aims to make this space engaging through art.
– He is still in contact with the PICKUS members but is closest with Namson.
– He enjoys listening to “Farewell Neverland” by TOMORROW X TOGETHER.
– Haneul’s charming point is his unusual sense of humor.
– He had many different dreams growing up, but has always wanted to combine his love for the performing arts, graphic arts, etc.
– People have told him that he bears a resemblance to Cinamoroll (Sanrio character). It is because of this that he has become Haneul’s favorite character.
– He can play the piano.
– He has two cats.
– He co-authored his first novel, CELLES DU LAC, alongside Adèle Chevalier and Julia Robin, which is set to be released on November 5, 2026.
See more facts about Haneul…

Kael (Rank 3)

Stage Name: Kael (카엘)
Birth Name: Yang Hae Uk (양해욱)
Position(s): Maknae
Birthday: January 7, 2003
Zodiac Sign: Capricorn
Chinese Zodiac Sign: Horse
Height: N/A
Weight: N/A
Blood Type: N/A
MBTI Type: ENTJ
Nationality: Korean
Instagram: @h.uk_1717
TikTok: @h.uk_1717

Kael Facts:
– He is a musical major at university.
–  He was accepted into Chung-Ang University, as well as Kookmin University’s Department of Theatre, for the 2022 academic year.
– Kael can speak a decent amount of English.
– He attended Catharsis Acting Academy.
– Kael’s role model is TXT‘s Soobin.
– His favorite musical is Kinky Boots.
– He describes himself as someone full of confidence and passion.
– His favorite colors are white and black.
– His favorite foods are nasi goreng, kal-guksu, samgyeopsal and Vietnamese noodles.
– He dislikes eggplant.
– Kael’s favorite drink is hot chocolate.
– He wanted to become a K-POP idol because he wants to give love to everyone.
– His favorite season is fall.
– He is a dog person.

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Made by: carlene
(Special thanks to: noa (forkimbit), Louu, kimmy (trendzluvrr on X))

Latest Official Release:

Who is your B.YOUR SIDE bias? Do you know more facts about them? Feel free to comment below. 🙂