Tiffany Hwang 

- is a Beautiful and Wealthy. She is a Campus Sweetheart that every guy is dreaming of. However, she is unhappy because of her Father conctantly blames her for her brother's death, and makes all decision with regards for her future. 

Taeyeon Kim 

-Tiffany's high schoolmate, his intelligent and has a good heart, but lives in proverty. Both of his parent have already died. He is left with his kind and loving Grandmother who continue to encourge him to persue his dreams and his love for Tiffany, no matter what obstacles get in his way. Taeyeon works as the school's janitor during the day to support his studies, and to provide for him and his grandmother's needs. 

Yuri Kwon

- is the typical playboy, and often changes his girlfriend. This has gone on since they were in highschool. Yuri best friend is Taeyeon.

Jessica Jung

- is a tomboy who has a crush on Yuri. After five years, she changed and blossomed into a beautiful girl, with Yuri falling in love with her.