On December 16, Fantagio Music announced, "On Wednesday night, December 15, Rocky suffered a scrape around his left eye area and bruising around his knee while practicing. He visited the hospital immediately to receive medical attention. Fortunately, the injuries were declared minor; however, the agency has determined that it is difficult to resume schedules as normal, and so Rocky will be sitting out the '2021 KBS Gayo Festival' taking place on December 17. ASTRO will perform on stage as 5-members."
Get well soon, Rocky!