Yoon Haneul - daughter of CEO of one of the richest industries in Korea, student of Hanyang university majoring in modern music.

Nam Hoyoung and Min Hanah - her bffs, also came of richest families, students of Hanyang university and also majoring in modern music.

Chunji - her biggest rival since childhood, also their parents are rivals, he is known for his good looking and power voice, in the same class of hers. Real name is Lee Chan Hee, but he doesn't want anyone to call him that name, everybody knows that Haneul and Chunji are rivals.

Lim Hyunsik - senior student, he is vocalist and guitarist of the band "The Beat" of the university, the hot kingka of the whole university, Chunji's rival because of parents' business.

Nana - also senior student majoring in acting, secretly in relation with Chunji, ex-girlfriend of Hyunsik, famous for her beauty and acting skill

Kim Jonghyun - mostly known as Jr in the university, from dance major, senior student who has no idea about how to love other than how to create dance, however, he still gets popularity by his rival dancing skill.

P.s. he is Hanah's cousin.

Jr - real name Park Jinyoung, known as Jr coz his friends Junior JYP, he can dance so well althought his major is acting, second year student and he is a bit player type, knows well how to seduced girls, nick name is Playboy, love is just a playing card for him

A stroy of two rivals starting to fall in love!!

A/N : I'm really bad at writing foreword!!! T_T