LIGHTSUM will now be promoting as a 6-member group.

On October 25, Cube Entertainment made the below announcement revealing Huiyeon and Jian are officially withdrawing from LIGHTSUM. The label stated, "After a careful discussion, we have decided to reorganize LIGHTSUM as a 6-member group (Sangah, Chowon, Nayoung, Hina, Juhyeon, Yujeong) for their future promotions, and we will provide our unlimited support and best efforts for LIGHTSUM to continue on with their music."

Take a look at Cube Entertainment's statement below, and stay tuned for updates on LIGHTSUM.