LIGHTSUM (라잇썸) is an eight-member girl group under Cube Entertainment. The group consists of 8 members: Sangah (상아), Chowon (초원), Nayoung (나영), Hina (히나), Juhyeon (주현), Yujeong (유정), Huiyeon (휘연) and Jian (지안). They made their debut on June 10, 2021 with the single "Vanilla".