XUM / Xumething Unlimited Move (썸) was a 3-member girl group under A100 Entertainment. The group consists of: Dayeon, Baekah and Iaan. They debuted on September 22, 2020 with their first single album - Ddalala.

2021
On June 1, 2021, the label announced on the girl group's official YouTube page that the group has disbanded. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.