Redsquare (Korean: 레드스퀘어; RR: Redeuseukweeo, stylized as REDSQUARE) was a five-member South Korean girl group formed by About Entertainment and managed by ICONIC Music & Entertainment.
Lina originally debuted as a solo artist under About Entertainment, using the stage name Blenn, with her single album Do I Feel on March 16, 2020.
On March 23, 2020, About Entertainment announced that they would debut their first 5-member girl group and subsequently released the first teaser.
[5] The company slowly revealed the members with their initials, followed by their full stage names.
Also featured on prequel was a 46-second instrumental B-Side “Spoiler”, that was only accessible on the album's physical CD.