Park Shin Hye

shin hye is a poor,shy but smart and kind girl who studies in Suji High School. In her new school, Hyupsung High School, guys always gets attractive to shin hye because of her kindness, and charms except for "The Boss". Even the Most Richest Handsome "Prince" didn't affect her on experiencing love.
A5:"The A5's admirable commoner"

Jang Geun Suk

geun suk is a rich, scary, and a bully in Hyupsung High School, also known as "The Boss". Many girls has a crush on him even though he is a bully who doesn't want anything to get out on his way. He's the leader of All Four, also known as "A4", a group who are the most richest and well known in school. A4 knew each other since they were kids and even attended Hyupsung High School together so they need to make a group to know who are those you should respect on. He too doesn't experience love just like shin hye even though soo jin is always with him.
A4: "The A4's Boss"

Jung Yong Hwa

yong hwa is the kind,calm, smart,rich "Prince".He realize that his soulmate is shin hye. His promise to himself is to never let go of that soulmate he has finally founded. He is one of the A4 who are well known in Hyupsung High School. Many girls wanted to be with him, date him and even marry him but, his mind are only to shin hye that made them jealous and so as so eun.
A4: "The A4's Prince"

Park Soo Jin

soo jin is the no.1 model in Hyupsung High School. She is the only female friend in Hyupsung High School that shin hye got. She get's jealous when she saw geun suk and shin hye are together. She is the same age as yong hwa. She is also one of the A4 by being the richest model and well known since then. The "A4's model" she is in love with geun suk ever since in elementary.
A4: "The A4's No.1 Model"

Kim So Eun

so eun is the cutest and admirable but when she talks to shin hye privately, she scares her and tells her not to get in touch with yong hwa. Her eyes always grow big whenever yong hwa does something for shin hye. She is the youngest one in A4.
A4: "The A4's Cutest Doll"

Lee Donghae

donghae is the first friend/bestfriend of shin hye in Hyupsung High School. he and shin hye are also the only ones who are new student in their class. he is good at taking pictures that's why he wants to be a photographer. he has been approached by a huge amount of girls just to go out with him. he's first love is shin hye but doesn't want to tell her because of their relationship/friendship.

Synopsis:
shin hye got accepted by the owner of the Hyupsung High School and insisted to let her study there then on the fees, they made it much lower for them to afford. shin hye never experienced love and thought it was only a mist. When the "A4" entered the school, they didn't notice the new commoner, but shin hye notice clearly the well-learned rich students. Everybody is attracted to "A4". since shin hye is being admired by others, What if she will become one of the "A4"? will she finally experience love?