slOwlYy

On February 23, she passed the fourth round after performing "Brown City" by in the seventh episode with Lee Ji Min (born 2004). On March 9, she passed the first half of the final round after performing "Once More" by Park Sung Shin in the ninth episode in a battle against Lee Ji Min (born 2004). On March 16, she performed a new song called "Hee World" during the second half of the final round in the 10th episode.

Young K of DAY6, Klozer, and Jeong Youngah worked on the song. She also contributed to the song's lyrics. At the end of the episode, it was announced that she finished in fourth place on the show.

On March 19, her song "Hee World" was released on streaming services. On July 5, under the stage name slOwlYy, she released the digital single "Memories Correction Playlist Ep. 3" with a remake of the song "Try Again" by d.

ear and Jaehyun. On September 27, she released her second digital single "Tickin'". On October 1, she was identified as the contestant SingAgain4 Singer No.

27 (싱어게인4 27호 가수) on the JTBC survival show Sing Again 4. On October 23, she changed her stage name on streaming platforms from slOwlYy to slowly (슬로울리) and opened an official Instagram account. The account's biography indicated that she was an artist under the agency ATCM which released her two previous digital singles.

On October 28, she passed the first round of Sing Again 4 with all eight votes from the judges after performing "Myung-tae" by in the third episode. On November 4, during the second round, she performed "Tarzan" by with Jadu in a duet battle against Dorado and Kim Ye Chan in the fourth episode. Their battle ended in a tie, but the judges gave her a pass to the third round.

On November 18, during the third round, she performed "Four Seasons" by Taeyeon in a battle against Kim Jaemin (also known as Kimfunny) in the sixth episode. Their battle ended in a tie, so the judges had to have a meeting to decide the winner. She became an elimination candidate after they chose Kim Jaemin as the winner.

She advanced to the fourth round after receiving an additional pass from the judges during the seventh episode on November 25. On December 2, during the fourth round, she performed "Make Up" by Sam Kim & Crush in a battle against Joowon, Lee Young Hoon, and Kim Jaemin in the eighth episode. She earned a spot in the top 10 and advanced to the fifth & semi-final round with Kim Jaemin after they both received all eight votes from the judges.

On December 16, before the semi-final round started, she performed her song "Tickin'" during the naming ceremony for the top 10 contestants in the 10th episode. On December 23, in the 11th episode, she performed "Someone's Dream" by in a battle against Kim Jaemin. She became an elimination candidate after Kim Jaemin won the battle.

Then, she competed in a consolation match between the semi-final round's elimination candidates including Kyuri, Lee Sangwoong, Choi Jung Chul, gongwon, and Kim Ye Chan. She performed "Dear Moon" by Je Hwi. slowly, Kim Ye Chan, and Kyuri earned the three remaining spots in the final top 7.

On December 30, in the 12th episode, she performed a new song that was produced by called "Wait for Me". She also performed "LLL (Live, Laugh & Love)" by Shin Haesol with Kim Jaemin, and Sing Again 3 finalists Shin Hae...