U-KISS had been overseas performing at a concert. The airport was completely packed with fans as he was leaving. He confessed that he felt someone touch his butt. At first, he brushed it off as one of his members joking around. However, he was shocked when the hand slipped under his pants. He had looked to see who it was, and saw a woman with her hands in his pants grinning at him.
Source: Koreaboo and Joins