QWER is a four-member girl band under 3Y Corporation and Tamago Production, which was founded by YouTuber and CEO Kim Egg as the 최애의 아이들 project. They made their debut on October 18, 2023 with the single album "Harmony from Discord". This was followed by the mini album "MANITO" on April 1, 2024 in which their title "T.B.H." has seen popular success. The follow-up second mini album "Algorithm's Blossom" was announced for release on September 23, 2024.