Everyone knows me but no one sees me.
I am a daughter, a bestfriend, a dancer, a student... But is that all?
Someday, hopefully, I'll be a wife, a mother, and a teacher.
Again, is that all? 
If there's more of me, what is it? Is there more to me for me?

Leads

Oh A. Danielle (OC)

GOT7's Mark as Tuan Mark

 He is a Taiwanese and Chinese chaebol, both of his parent's come from extremely wealthy families.

He is a Third Year (Junior) in high school.

EXO's Kai as Kim Jong-In

 Jong-In is a South Korean chaebol, his father and mother both run "K. SKY GROUP" together.

He is a Third Year (Junior) in high school.

All students who attend Seoul's Star Flower High come from some sort of family wealth.

Supporting Characters

Apink's Naeun as Son Na-Eun

-Her mother is a painter who owns many art galleries in Asia. Her father works as a famous music conductor.

-She is a First Year  (Freshman) in high school

f(x)'s Krystal as Jung Krystal 

-Her father is a lawyer, her sister is a member in a girl group, her mother owns high class restaurants.

-She is a First Year (Freshman) in high school.

Girl's Day Hyeri as Lee Hye-Ri

-Her parents and their families own seperate companies that are successful.

-She is a First Year (Freshman) in high school.

Miss A's Suzy as Bae Suzy

-Her mother is a famous cellist, her father is renown plastic surgeon.

-She is a First Year (Freshman) in high school.

Bangtan Boys (BTS)'s V as Kim Tae-Hyung

-His father owns a chain of companies in South Korea and Japan.

-He is a First Year (Freshman) in high school.

Mark's Friends (West SSFB)

Infinite's L as Kim Myung-Soo

-He is an actor.

-His father is a famous chef, his mother is an heiress.

-He is a Third Year (Junior) in high school.

B.A.P's Youngjae as Yoo Young-Jae

-He is a singer for OSTs in dramas.

-He is a Third Year (Junior) in high school.

 -His father's father and father own an entertainment company, his mother is an heiress.

Jong-In's Friends (EAST SSFB)

Lu Han as Luhan

-He is a Chinese chaebol due to his father and family background in China.

-Brother of Oh Sehun through his father's marriage to Sehun's mother.

-He is a Fourth Year (Senior) in high school.

EXO's Suho as Kim Suho

-He is an actor.

-His parents come from a very long line of wealthy families.

-He is a Fourth Year (Senior) in high school.

EXO's Lay as Zhang Yixing

-A popular dance choreographer

-He is a Fourth Year (Senior) in high school.

-His mother owns a luxury cosmetic brand in China, his father is a neurosurgeon in the states.

EXO's Chen as Kim Jong-Dae

-He is a Third Year (Junior) in high school.

-He's a model.

-His parents work in the fashion industry his father's in Europe and his mother's in Japan.

EXO's Sehun as Oh Sehun

-He is a model.

-His mother is an heiress.

-Brother of Luhan, through his mother's marrige to Luhan's father.

-He is a third year (Junior) in high school.

Park Bo Young as Park Bo-Young

-She is a second year (Sophomore) in high school.

-She is studying abroad in the states for fashion, as her mother is an ex model and her father is a designer.

S.G 3 (Sunflower Girls)

 Go Ara as Go Ara.

 Red Velvet's Irene as Bae Irene

 Girl's Day Yura as Kim Yura

(S.G.3 are Second Years (Sophomores) in high school.)