B-Goni! Hello, we are BLACKSWAN!
BLACKSWAN (블랙스완; also spelled as Blackswan) is a four-member girl group under DR Music. Originally as five, they made their official debut on October 16, 2020 with their first full-length album Goodbye RANIA.
2020–present: Renaming as BLACKSWAN, new members, debut
On June 26, 2020, RaNia's Hyemi announced through her group's SNS that she was the only member left, so it would be strange to release an album under the name RaNia, arguing that due to this the group would start fresh under the name B.S (BLACKSWAN) and that they would soon be releasing a new album, with new members.
On July 1, Youngheun posted a letter to her Instagram thanking fans for their continued support and good news. She revealed she was going to be a part of B.S. alongside Hyemi and several new members. On July 3, Lisa (Larissa) posted a letter also stating that she will be part of the group under the stage name Leia.
In an interview with Korean news program Channel A News on September 16, the group revealed that they were expected to debut in early 2020, but it had been postponed indefinitely due to the COVID-19 pandemic and the difficulties that came with it. On September 25, an article on Bunja Dongne Times revealed that the group would be debuting in October 2020, with the music video already filmed.
On November 9, media outlet Dispatch reported that member Hyemi was accused of fraud after allegedly scamming an unidentifed male office worker out of 50 million KRW ($45,000 USD) that was lent to pay for her rent, living expenses and credit card bills. The following day, DR Music announced they would be filing a counter lawsuit against the individual. The agency also revealed that Hyemi's exclusive contract had ended on November 7 but will still legally represent her until the issue is resolved. At the same time, it was announced that BLACKSWAN would go on a temporary hiatus. 
|Youngheun (영흔)||Leader, Lead Vocalist, Lead Dancer||2020–present|
|Fatou (파투)||Main Rapper, Main Dancer||2020–present|
|Judy (주디)||Vocalist, Lead Dancer||2020–present|
|Leia (레아)||Vocalist, Visual, Lead Rapper, Maknae||2020–present|
|Hyemi (혜미)||Main Vocalist||2020|
- Goodbye RANIA (2020)
- (KR) Bunja Dongne Times: '힌트/하이큐티/블랙스완', 온텍트 쇼케이스 28일 송출 결정
- @blackswan_drent on Twitter - October 9, 2020
- RaNia on Facebook (June 26, 2020 post)
- @youngheuneeda Instagram post (July 1, 2020)
- @DRMUSIC_RANIA Twitter tweet (July 3, 2020)
- News 1: 케이타이거즈 제로·블랙스완, 평창 홍보대사로 위촉
- Allkpop: B.S (Black Swan) [formerly RaNia] full line up revealed. Includes African and Brazilian members
- Blackswan_블랙스완 on Instagram (July 8, 2020 post)
- Soompi: K-Pop Idols, Trainees, And Agencies Talk About The Effect Of COVID-19 Pandemic On The Industry And Careers
- Allkpop: Black Swan's Hyeme is accused of scamming over 50M won from unidentified man; sets Instagram account to private
- Allkpop: Black Swan's agency to file counter-lawsuit against individual 'A' accusing member Hyemi of scamming + girl group to halt promotions temporarily