Loossemble (Korean: 루셈블) is a South Korean girl group under CTDE&M. The group consists of the five members of LOONA: ViVi (비비), HyunJin (현진), Go Won (고원), HyeJu (혜주) previously known as Olivia Hye (올리비아 혜), and YeoJin (여진). On September 15, 2023 they released their debut, self-titled EP Loossemble with the title track "Sensitive".