LIGHTSUM is continuing the preparation for their 1st mini-album, 'Into The Light.'

On May 18 at midnight KST, the girl group released a comeback trailer to prepare for their comeback. In the comeback trailer, each member is seen with their back to the camera, each doing different tasks.

Meanwhile, LIGHTSUM's 'Into The Light' is set to drop on May 24 at 6 PM KST. So stay tuned until the album releases, and the girls make a comeback!