characters.. (female) lee sung yu as "kim hyuna"김휸아kim shin yeong as "kim shin yeong"김신영jessica as "Park Yu Ra"박유라soo young as "Fione Park"박피언song hye kyo as "Park Lu Na"박루나characters.. (male) jung yong hwa as "jung yong hwa"중용화kim soo hyun as "Song Jun Hyun"송준휸cheondung as "Lee Tae Sun"이태순Lee Min Ho as "kim ki bum"김키붐