The boys of HBY are preparing for a comeback!

On February 24, the Rainbow Entertainment boy group dropped individual concept photos for their second single album 'YOLO.' In the images, all four members - Marco, Taro, Kyu Hyuk, and Ji San - display their individual colors, posing for the camera with plenty of charisma in four very different settings.

Meanwhile, 'YOLO,' which drops on March 6, is the group's first comeback since Marco's return from project group UNB.

Check out the teaser images below!