Amber

17 years old.
A girl who lost her parents at the age of 5 because of a plane crash.
She was brought up by her grandfather, who lives as a maffia leader.
If someone needs help then she will stand up for her or him.
She is really loyal and has manly sides in her because of her background, but can also be feminine sometimes.
She never had a boyfriend because she thought she wouldn't have to need a boy to help her.

Donghae

17 years old.
One of the most popular guys in school
Has a bit of a mysterious background.
He hates his dad and he wants revenge on him for some reasons.
That's also the only thing he wants.
Amber hates him and became his enemy, because of his weird attitude and revenge plans.

Henry

18 years old
He's is really populair and is really open and is easy going.
Because of his face and character he can be friends with everyone.
He likes Amber.

Jihyun

18 years old
Best friend and childhood friend of Amber.
She is a really nice girl, but can be though when she wants to.
She was teased at school first, but overcome this with the help of Amber.

Dasom 

17 years old
Is a really sweetheart.
She secretly likes Henry because he saved her once.
She knows that Henry likes Amber so she decided to keep it secret

Hyungsik

17 years old
The best friend of Donghae.
Even thought he's really rich, he's missing some popularity.
That's why he started to follow Donghae around.