SS501's Heo Young Saeng was originally scheduled to make his solo debut on April 28th, but plans have been pushed back after he sustained an injury during rehearsals. B2M Entertainment reported, "Heo Young Saeng was practicing his choreography in the training room on the night of the 19th. He injured the back of his hand and was immediately rushed to the hospital. Test results showed that his hand has a ruptured ligament (desmorrhexis) and a fracture that will take five weeks to heal. He's currently hospitalized and is awaiting further results." Due to the sudden injury, all of the schedules for his solo promotions have been postponed. His representative added, "Mentally, Heo Young Saeng is extremely upset over the fact that he must push back on his promise with his fans. He's determined to push forward with a cast if it's possible, so we'll be discussing release dates as soon as he is discharged." Source: Star News via Nate