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Belllie've you! Hello, we are Billlie!


Billlie (빌리) is a seven-member girl group under MYSTIC Story. Originally as six, they debuted on November 10, 2021 with the mini album The Billage of Perception : Chapter One.



In February 2020, MYSTIC Story opened an Instagram account for MYSTIC Rookies, a pre-debut team of their seven female trainees: Moon Sua, Suhyeon, Haram, Tsuki, Siyoon, Lee Soomin and Takeuchi Miyu, all of whom were potential members of the agency's first girl group.[1] However, Soomin and Miyu left the team in August 2020 and May 2021, respectively.[2]

On May 4, 2021, MYSTIC Story confirmed plans to debut the group in the second half of the year.[3] On September 14, 2021, it was revealed that they would debut in November.[4]

On September 27, 2021, a series of dance covers were started in partnership with 1MILLION Dance Studio, the first dance cover was of Beyoncé's "Diva" and performed by Moon Sua, Tsuki and Siyoon.[5] On October 3, 2021, a cover of Cardi B's "Up" was published, now being performed by Suhyeon, Haram and new member Haruna; officially revealing her as their sixth and final member.[6] On October 10, 2021, a cover of Ashnikko's "Slumber Party" was released, this time performed by the entire group.[7]

2021: Debut with The Billage of Perception : Chapter One, addition of Sheon and "The Collective Soul and Unconscious: Snowy Night"

Promotional photo for The Billage of Perception : Chapter One

On October 11, it was announced that this group would be called "Billlie" and include the previously revealed trainees Moon Sua, Suhyeon, Haram, Tsuki, Siyoon and Haruna.[8]

On October 28, a fan song titled "Flowerld" was released on the group's YouTube channel.[9] It was later confirmed that the track will be featured on the group's debut album.[10] It was also announced that the group will debut on November 10 with their first mini album The Billage of Perception : Chapter One.[11]

On October 30, concept photos of the group and members for their debut mini album were revealed, starting with individual photos of Haram, Tsuki and Haruna, followed by photos of Moon Sua, Siyoon and Suhyeon and a group photo a few hours later.[12][13][14]

On November 19, MYSTIC Story announced that former Girls Planet 999 contestant Kim Suyeon would be joining Billlie under the stage name Sheon.[15]

Promotional photo for The Collective Soul and Unconscious : Chapter One

On December 14, Billlie released the digital single "The Collective Soul and Unconscious: Snowy Night".[16] This release marked the first comeback with member Sheon participating.

2022: The Collective Soul and Unconscious: Chapter One, "Track by Yoon: Patbingsu", The Billage of Perception : Chapter Two

On January 27, 2022, Mystic Story confirmed reports that Billlie is preparing for a comeback, slated for a late-February release.[17] On February 11, a teaser poster was released, revealing that they would be releasing their second mini album The Collective Soul and Unconscious: Chapter One on February 23.[18]

On March 1, it was announced that Billie would be releasing an OST album, The Collective Soul and Unconscious: Chapter One Original Soundtrack from "What is your B?", on the same day at 6PM KST. The soundtrack contains the score music used in "What is your B?", which was released as a concept story film for their second mini album.[19]

On June 23, a source from Mystic Story shared that Billlie will be releasing a song through Yoon Jong Shin's new music project in mid-July.[20] The song, a remake of Yoon's song "Track by Yoon: Patbingsu", was released on July 14.

On August 7, 2022, Mystic Story confirmed reports that Billlie is preparing for a comeback with their third mini album, The Billage of Perception : Chapter Two, on August 31.[21]


Name Positions[22] Color[23] Year(s) active
Moon Sua (문수아) Main Rapper, Lead Vocalist      Purple 2020–present
Suhyeon (수현) Main Vocalist, Lead Dancer      Green 2020–present
Haram (하람) Main Vocalist, Sub Dancer      Pink 2020–present
Tsuki (츠키) Main Dancer, Sub Vocalist      Red 2020–present
Sheon (션) Main Dancer, Lead Rapper      Orange 2021–present
Siyoon (시윤) Main Rapper, Lead Dancer      Yellow 2020–present
Haruna (하루나) Sub Dancer, Sub Vocalist, Maknae      Blue 2020–present
Soomin (수민) N/A N/A 2020
Miyu (미유) N/A N/A 2020–2021[2]


Mini albums

Digital singles



Concert participation

  • 2022 Boryeong Sea Mud Exhibition K-MUD Global Show K-POP Concert[24] (2022)
  • MIK Festival 2022 (2022)



Main article: Billlie/Gallery


  1. Soompi: Mystic Story Reveals Girl Group Trainees Including Familiar Faces From Survival Shows And “A-TEEN”
  2. 2.0 2.1 Soompi: Former “Produce 48” Contestant Takeuchi Miyu Leaves Mystic Story
  3. Soompi: Mystic Story Confirms Plans To Launch New Girl Group This Year
  4. Soompi: Mystic Story To Officially Debut New Girl Group In November
  7. MYSTIC ROOKIES | Ashnikko 'Slumber Party (ft. Princess Nokia)' DANCE COVER | JJ CHOREOGRAPHY
  8. (KR) Star News: "미스틱 첫 걸그룹, 그룹명 빌리..11월 6인조 데뷔 공식"
  9. Billlie | Our first fan song, [ FLOWERLD ]
  10. (KR) OSEN: '미스틱 첫 걸그룹' 빌리, 데뷔 전 팬송 'FLOWERLD' 이색 선공개
  11. @Billlieofficial on Twitter (October 28, 2021)
  12. @Billlieofficial on Twitter (October 30, 2021)
  13. @Billlieofficial on Twitter (October 30, 2021)
  14. @Billlieofficial on Twitter (October 30, 2021)
  15. @Billlieofficial on Twitter (November 19, 2021)
  16. @Billlieofficial on Twitter (December 5, 2021)
  17. Allkpop: Billlie to make speedy comeback at the end of February
  18. @Billlieofficial on Twitter (February 11, 2022)
  19. (KR) Herald Pop: 빌리, 미니 2집 음악 OST로도 만난다..멜로망스 정동환 지원사격
  20. Soompi: Billlie Confirms Plans For July Release With Yoon Jong Shin’s New Project
  21. Soompi: Billlie Reveals 1st Teaser For Upcoming End-Of-Month Comeback
  22. (JP) HMV&BOOKS: 【セルカ+インタビュー】Billlie
  23. @Staff_Billlie 빌리 on VLIVE (@11:29) (November 30, 2021)
  24. 2022보령해양머드박람회 K-MUD 글로벌 쇼 K-POP 콘서트🎇. br_seamud_official (2022-07-01). Retrieved on 2022-07-01.
  25. Billlie for Star1 Magazine (November 2021)

Official links