Stands for EverLasting Friends, the official fanclub of the 13 membered Korean boyband, Super Junior. Established after Kyuhyun, was added as the final member, and Super Junior was finalized as a group. Also written as E.L.F. or elf.
Fans wave pearl sapphire blue lightsticks or balloons at Super Junior concerts because it is the club's official color.
E.L.F: Do you know any other ELF going to the Super Show II in Singapore?