UNB's Hansol injured his leg during recent promotions.
On July 1, entertainment insiders revealed that Hansol had been promoting as UNB with an injured leg. The news got out only after the injury; for all promotions of "Black Heart", the idol had kept the issue under the radar. To continue with his activities, Hansol still wears a guard on his leg before he steps onto the stage.
Fortunately, many speculate that the injury is not severe for more critical treatments. We wish you a quick recovery, Hansol!