Aryana - has been living with her grandparents since she was six years old. She plays the violin and loves to sing and dance. Family is rich, arranged marriage to Jung Jinyoung. Shy and innocent. Simple. Too independent for her own good sometimes. Friends call her Arya for short.

Shin Dongwoo - family is rich, playboy. Rebellious, arrogant and cocky at times. Very handsome. Arranged marriage to Aryana. Thinks that every girl wants him. Friends call him CNU. 

Aiden & Keiko - Aryana's parents. Middle-class. Want their daughter to have many opportunities and to expand her horizons, but they wouldn't have been able to afford it, so they let Aiden's parents raise her. They see her on the holidays and occassionally when they are able to visit.

Luciano & Annalisa - Aryana's grandparents. Grandfather taught her how to play the violin (he's a famouse violinist in Italy); she's his protégé. They own a recording industry; widely known throughout the world. Moved to South Korea so Araya can spend more time with her parents.

Jeon Hyosung - Aryana's and Cho Hee's best friend. Loves to dance and is very good at it. She's funny and kind.

Cho Hee - Aryana's and Hyosung's best friend. She's outgoing. Loves to draw and is very good at it.

Jung Jinyoung- CNU & Aryana's friend. Acts like the older brother. Loves to compose songs. He's playful and kind.

Gong Chanshik - Jinyoung & Aryana's friend. Aryana's partner in crime. Aryana and him get in trouble by the other B1A4 members because they cause lots of trouble. Like to play pranks on people. Gets out of trouble easily because of his aegyo. Friends call him Gongchan.

Cha Sunwoo - Jinyong and Aryana's friend. Raps very well. Acts like Aryana's protector. Her best guy friend. Friends call him Baro.

Lee Junghwan - Jinyoung's friend. Family owns the school and other schools. Doesn't know Aryana too well, hasn't had a chance to hang out with her. The class president. Friends call him Sandeul.

Hee Young - Jinyoung's ex-girlfriend

Soo Min - Hee Young's best friend

Young Soo - Arya's ex-boyfriend

Kang-Dae - Young Soo's best friend

B1A4 - Consists of the best looking guys at school.

WM University - the school B1A4, Hyosung, Aryana, and Cho Hee attend.