Park Hee Young-; Born on Janurary 30, this 17 year old girl has a very smart head on her shoulders. Although, she can be seen as clueless and lost at times. As the oldest of the three, she's very understanding and looks after everyone in her life. She may come off as being the weird one, but those that closest to her knows she's very capable of standing up for herself, and those that she loves. She dreams of becoming a pediatrician, and with the support of her family and friends, she is very capable of obtaining that dream of hers. As a child, she always had her eye out for Kim Jongin, or as everyone calls him, Kai. She's extremely nervous around him, even if they just walk past each other in school she blushes like crazy. She has no idea he has feelings for her, even if everyone else sees it.

Lim Jae Seom-; The hardcore looking, "rebellious" one out of the group. Her looks are definitely deceiving. She may look pissed off at the world, or like a typical "bully", when really she's one of the sweetest and most kind-hearted people you can ever meet. Born on March 23, this 17 year old is the second oldest in the trio, the middle child. All her life she's been compared to her best friend, cousins, and especially her mother. Always being compared to everyone else made her want to push herself to be more individual, causing her to turn into the hard person that she is today. She's loud, funny, and in your face. She's not afraid to speak up and to say what's on her mind, which can cause her to get into trouble here and there, but that doesn't seem to bother her. The only time that she ever becomes the sterotypical "shy" girl, is around Choi Minho. He's been her good friend for years, and their families always tried to make them a couple. But soon, Minho started dating CL, which put Jae into a depression state for awhile. Things will change between Jae and Minho, but CL will always try to keep them seperated.

Cho Mi Yeon-; The baby of the group. November 18 is her day of birth, and apparently the number "18" is extremely significant for her. This girl is very, unique. Creative in so many ways, she's also a fantastic writer and her imagination is endless. She has a way of coming with new things and ideas given only the tiniest bits of information, that seem to amaze everyone that has ever taught her. One of the brightest students in the school, obviously she gets mistaken as a nerd and someone that no one really seems to bother. She spends her days reading her books and doing her work, basically whatever she's supposed to do. But deep down inside of her, there's something that isn't pretty. Something dark and hurtful, one that not even she tends to remember. All things seem to slip away from her reality whenever she sees Kwon Jiyong smile. Her best friend, and crush, whom she met through her older sister, which also happens to be CL. But as her relationship grows with Jae and Heeyoung, the pain she once felt slowl but surely melts away, and soon her eyes are opened too people that truly love and care about her.