Sometimes things aren't like they seem. People think to know a person just for the way she shows herself to everyone, but deep down everyone has his weakness and secrets. And Jiyeon happened casually to know a secret about the rude, most hated student in all the school. Park Hyomin. 

The practice of "Trouble maker" was a complete mess. Hyomin couldn't concentrate at all. Everytime her ex girlfriend, Park Jiyeon, would place her hands on her body for the choreography, Hyomin could feel the air around her become almost non existent and her brain become blank, making her for the hundred time mistake the choreography. Hyomin was mad with herself. Why was she still feeling like this? Why couldn't she just wash away those feeling for Jiyeon?     

"I don't care what could happen to me when all I'm worrying about is you and only you."