[ASKKPOP] A male fan surprises IU on stage at the '2014 Misari 7080 Festival'
IU was performing at the '2014 Misari 7080 Festival'. Due to her fans' requests, she stayed on stage to sing a short part of "Your Meaning". However, while she was singing, a male fan suddenly intruded onto her stage. He was ultimately caught by the staff, and she managed to finish the stage professionally.
You can see her surprise at the 3:02 mark below. Good thing nothing bad happened!