Taeyeon - the small girl with big dreams but suddenly chooses love instead of her future. As time has passed she didn't exactly expect hell to really real. A hopeless romantic gone troubled. She will go back to doing baby steps to be happy again. 

Sunkyu - an artistic soul, moody. She knows what she wants and half the time she gets it done and makes it happen. She gets tired of fighting over and over again and soon realizes that she might not want this life anymore.

Yul - Taeyeon's bestfriend. Atheletic. She is on the volleyball team with Taeyeon. She met Taeyeon when she accidentally hits her on the face instead of the ball. She is with yoona who also supports Taeyeon as she slowly stands up again.

Yoona - A very bright and kind girl. Geeky. She is the best advice giver and the only one  that yul loves. She gives the most honest opinions but never forgets to be gentle to ones feelings. She is as sensitive as she is opinionated. 

Prof. Kim - Taeyeon's music teacher and vocal coach

Tiffany - a very wild girl. She knows how to have a good time. Heiress of her father's company but somehow she is always in a wreck and people claim her to be unfit to be placed as CEO of the company.