
At a fan signing event on February 21, 2020, she told her fans that she played hard on her character at Burning World (server) in MapleStory, but couldn't move it to another server because she wasn't on the levels.

" Street Dance Girls Fighter (SGF) Special" ("Bada Boom" with Solar) (2022)." REVIBE Vol.1 Promise U" (with Solar) (2021).On December 8, a teaser was revealed for Moon Byul's special single album, " The Present", to be released on December 22. On April 12, a schedule teaser was revealed for Moon Byul's first single album, " C.I.T.T (Cheese in the Trap)", to be released on April 28. On March 29, 2022, RBW confirmed Moon Byul is preparing for an April comeback. The album features two pre-release tracks " G999" and " Shutdown", which were released on December 13 and December 30, respectively. On December 7, 2021, it was announced that Moon Byul will release her new mini album 6equence on January 19, 2022. The mini album's repackage, 門oon : Repackage, was released three months later, on May 29.Ģ021–2022: 6equence, "C.I.T.T (Cheese in the Trap)", "The Present" The title track, "Eclipse", evokes a battle between the light and the dark side. The mini album was released on February 14. Moon Byul released " Weird Day" on February 4 as a pre-release track for her upcoming mini album Dark Side of the Moon. The digital single's title track, also named "Selfish", features Seulgi.Ģ020: Dark Side of the Moon, 門oon : Repackage On May 23, she made her solo debut, releasing " Selfish".

She participated in the KBS variety show Idol Drama Operation Team and became a part of the project group created by the show, a girl group named Girls Next Door. Moon Byul made her debut with MAMAMOO on June 18 with the mini-album Hello.

1.4 2020: Dark Side of the Moon, 門oon : Repackage.
