Sulli Hwang 25 years old. working as a CEO on Hwang enterprise and madly inlove with a girl working as a secretary and not long after became his girlfriend. He is willing to do everything to that girl but that girl's brother is against their relationship. has a bratty sister and dont know how to handle her anymore.

Krystal Jung Soojung 20 years old secretary of the president of Hwang enterprise. Love Sulli so much and willing to do everything even if her brother's against it. Think of an idea to make her brother approve their realtionship.

Jesse Jung 27 years old didnt like the idea of his baby sister dating the Eye smile Prince of the business industry. He thinks that Sulli will just gonna play on his sister's heart.  He is singer and a composer but lost his interest in music after something happened in his past. A Jobless man.

Tiffany  Hwang 16 years old. A spoiled bratty Princess of Hwang family. She never trusted anyone except for her older brother Sulli, But Sulli is always busy with work and his Girlfriend. doesnt like studying and always failed in her exams and always end up fighting with her classmates which she always end up on the principals office.