S2iT Members Profile
S2iT (에스투잇) is a five-member South Korean girl group under KNH Entertainment and MONSTER BRAIN. The company Be The Max Entertainment solely manages their performances. The lineup consists of Yeonsoo, Haru, Sea, Hyobin, and Seungbi. They debuted on March 14, 2026, with the digital single “What I Want”
Group Name Meaning: The “S” in S2iT stands for the word “shine.” The number 2 in the group stands for “to”. The group advances on a journey toward its goal (it) with a sound filled with its own light and passion. In short, the group shines while moving towards it.
Official Greeting: “Be Your Mirror, Be Your Light, Hello we are S2iT!”
S2iT Fandom Name: N/A
S2iT Official Fandom Color: N/A
Official Logo:
Official SNS:
Instagram: @s2it_official
TikTok: @s2it_official
X: @s2it_official_ / @S2iT_2026 (Inactive)
YouTube: @S2iT(에스투잇)
S2iT Members Profile:
Haru
Stage Name: Haru (하루)
Birth Name: Lee Yunseon (이윤선)
Position(s): Leader, Main Dancer
Birthday: July 14, 2005
Zodiac Sign: Cancer
Chinese Zodiac Sign: Rooster
Height: 158 cm (5’2″)
Weight: 42 kg (92 lbs)
Blood Type: N/A
MBTI Type: ENFP
Nationality: Korean
Instagram: @luv_yseon_ (Main) / @0_yseon (Second)
Naver Blog: @julyseon_
Threads: @luv_yseon_ (Main) / @0_yseon (Second)
TikTok: @yseoni
Haru Facts:
– She is from Gumi, Gyeongsangbuk-do, South Korea.
– Her favorite brands for perfume are Dior and Prada.
– Haru danced at RED STAGE and mu:tudio.
– She participated in dance competitions when she was younger.
– Her three most-used phone apps are KakaoTalk, Instagram, and Camera.
– Haru likes to choreograph dances.
– In 2023, she won Gumi City’s National Singing Contest held by KBS.
– She was a pre-debut member of Glacia.
– Two of her special skills are choreographing and singing trot.
– Haru attends Seoul Hoseo Art College, where she is majoring in practical dance. Previously, she attended Sangmo High School.
– She started dancing at the age of seven.
– Her ideal type is a guy who is cute when he laughs.
– She is a part of the dance team WILDBODY. She was a part of the dance teams HERIUN and Inherent. She goes under the stage name YSEON.
– Haru’s role models are GFRIEND, fromis_9‘s Song Hayoung because of her all-rounder quality and her cute image, and BLACKPINK.
– She started dreaming of becoming an idol in 2016 after she saw GFRIEND perform.
– Her hobby is watching movies.
– Some of her favorite colors are blue, black, white, and pink.
– Haru can do 5 types of Latin dance styles.
– She prefers sweet desserts over rice.
– Her dream of becoming an idol started to sprout once her mother sent her to a dance academy after seeing how much she enjoyed teaching others how to dance. Also, she enjoyed dancing on stage with her friends.
– Haru auditioned with Taeyeon‘s song “Fire”.
Yeonsoo
Stage Name: Yeonsoo (연수)
Birth Name: Baek Yeonsoo (백연수)
Position(s): Main Vocalist
Birthday: June 25, 2005
Zodiac Sign: Cancer
Chinese Zodiac Sign: Rooster
Height: 163 cm (5’4″)
Weight: 45 kg (99 lbs)
Blood Type: N/A
MBTI Type: INFJ
Nationality: Korean
Instagram: @w0owo0o
Yeonsoo Facts:
– Yeonsoo is from Cheonan-si, Chungcheongnam-do, South Korea.
– She was a pre-debut member of Glacia.
– Some of her hobbies are writing lyrics, watching ballet performances, and making beads.
– One of her role model is Rihanna because when she first watched one of her videos on YouTube, there was this energy and aura coming from her that made her realize that was it. Her other role models are BLACKPINK and Rain.
– Yeonsoo took dance/vocal classes at Flowing Academy and Joy Dance Plugin Music Academy.
– She speaks English and Korean.
– A perfume brand she likes is Jo Malone. A specific perfume she likes is Michael Malul’s Citizen Jill.
– Her special skills are creating choreography and writing lyrics.
– Yeonsoo passed auditions for the companies MODHAUS, WAKEONE, P NATION, and Biscuit Entertainment.
– She is close to the influencer Lee Jaeyeon.
– Several of her favorite colors are red, blue, Indian pink, and green.
– A favorite food she has is a donut.
– Yeonsoo became an idol because according to her parents, she used to dance at home all day since the age of 3. This led her to believe she had music in her blood.
– The song she auditioned with for vocals was “Bedroom (feat. Anne-Marie)” by JJ Lin, and the song for dancing was “Hype Boy” by NewJeans.
Sea
Stage Name: Sea (세아)
Birth Name: Song Jiwoo (송지우)
Position(s): Lead Vocalist
Birthday: August 9, 2006
Zodiac Sign: Leo
Chinese Zodiac Sign: Dog
Height: 161 cm (5’3″)
Weight: 43 kg (94 lbs)
Blood Type: N/A
MBTI Type: ENFP
Nationality: Korean
Instagram: @happypyp_
Sea Facts:
– Her special skill is dancing.
– Sea was a Choco Entertainment trainee starting in the beginning of August 2024 to October 2024.
– She attended Osong High School and was a part of their dance team.
– Her role models is aespa‘s Karina because of her all-rounder quality.
– Sea’s hobby is walking.
– She took dance/vocal classes at Mudoctor Academy.
– If she were to express her voice with a color, it would be purple because it gives off a dreamy feeling.
– Her favorite color is pink.
– Sea chose that as her stage name because she has a desire to meet the fans with a truly clean and clear image, much like the ocean.
– She auditioned with Taeyeon‘s song “Gravity”.
– Some of her favorite foods are ice cream, tteokbokki, and malatang.
Hyobin
Stage Name: Hyobin (효빈)
Birth Name: Park Hyobin (박효빈)
Position(s): Sub Vocalist
Birthday: October 16, 2009
Zodiac Sign: Libra
Chinese Zodiac Sign: Ox
Height: 167 cm (5’5″)
Weight: 44 kg (97 lbs)
Blood Type: N/A
MBTI Type: INFJ
Nationality: Korean
Instagram: @hyobin_o9
TikTok: @hyobingsooo
Hyobin Facts:
– Hyobin’s favorite color is pink.
– She was a part of 4D Lable’s group Trendy.
– Her hobby is watching movies.
– Hyobin has a younger sister and younger brother.
– She took vocal/dance classes at Mudoctor Academy.
– Some of her special skills are choreographing, acting, and street dancing.
– Hyobin decided to become a singer because of TWICE.
– She was a part of Gyeonggi Teens Musical.
– Other than TWICE, her role model is Jang Wonyoung because of how she is perfect externally and internally.
– She auditioned with Justin Bieber’s song
– Hyobin attends School of Performing Arts Seoul and is in the Department of Theater & Film.
– Her personal color palette is cool summer, which is why she likes to wear pink frequently.
– Sweet foods are her favorite foods. Her favorite sweet is chocolate.
– She saw artists perform and became interested in dancing and singing, so she decided to register at an academy. There, she decided she wanted to become an idol.
Seungbi
Stage Name: Seungbi (승비)
Birth Name: Ahn Seungbi (안승비)
Position(s): Rapper, Maknae
Birthday: July 13, 2010
Zodiac Sign: Cancer
Chinese Zodiac Sign: Tiger
Height: 165 cm (5’4″)
Weight: N/A
Blood Type: B
MBTI Type: ENFJ/ENTJ
Nationality: Korean
Instagram: @asb0713 (Personal) /@seung_bi_ahn (Managed By Parents)
NGL: @asb07131
Threads: @asb0713 (Personal) /@seung_bi_ahn (Managed By Parents)
TikTok: @asb0713_
YouTube: @안승비 seungA_bi_ahn
Seungbi Facts:
– She lives in Nonhyeon-dong, Incheon, South Korea.
– Seungbi was a contestant on Universe Ticket, where she ended up placing #43.
– She says she memorizes choreographies quickly.
– Her favorite part of her face is her dimples.
– Seungbi is a member of Play With Me Club (2021-2022; 2024-present). Seungbi was a pre-debut member of the groups A4TEEN and Hi Dream.
– Several of her favorite foods are seonji haejang-guk, tteokbokki, gopchang, mulhwe, all seafoods, and hoe.
– She has an older brother, and younger brother named Seungyou.
– Seungbi takes dance classes at RED STAGE.
– BoA is one of her favorite artists.
– Her ideal type is someone who is warm-hearted, kind, and reliable.
– Seungbi is also a model. She’s modeled for BLAHBANG, PRANKERS, and other brands.
– Two of her nicknames are Dracula because of her “crooked” teeth and Dolphin because she mimicked one at one of her auditions.
– If she could have any superpower, she would get teleportation.
– The song she auditioned with was “BATTER UP” by BABYMONSTER.
– She started training when she was in sixth grade.
– Pastel colors are her favorite colors.
– Her role model is G-Dragon because she composes and writes lyrics, just like he does. Also, she wants to light up the stage similar to how he does.
– Two of her favorite Sanrio characters are Hello Kitty and Cinnamoroll.
– Seungbi learned how to compose during middle school.
– She attends Hanlim Multi Art School and is in the Department of Entertainment.
– Ever since she was a child, she has loved performing on stage, which made her want to become an idol.
made by: brightliliz
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– Kprofiles.com
Note 2: All positions were confirmed at the debut showcase.
Debut Release:
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