Cinderella has lost her mother since childhood and she always hassled by her stepmother and stepsisters. Ah, how sad. How hard she's crying? 

But, I'm not crying. 
I'm not pretending. I really don't cry. 
When my mother died, 
when I got a nice new mother, not long after my mother died, 
when I was bullied by a girl who was taken by my stepmother, 
although my father always defended them, 
although when the excursion I had never been asked by them, 
when I heard their laughter at the living room without including myself, 

I never cry. 
I just smiled. Trying hard to smile.

Park Chorong. She's 17 years old. Her life like a cinderella. Since her mother died, she never felt love again. She's really kind, she has another way to cry, she's crying through her smile. She's being hated by her stepmother and stepsister even her own father. Her father thought that her mother was cheated and gave her birth. Her stepmother and stepsister always treated her badly, so badly like she was anyone else. She also hated by others because some reason, because she's beautiful, she's a good girl, she's smart, she's loving and she's ordinary. But she didn't care at all.

Lee Jongin. Also known as Kai. He's the first grandson of Directur Lee owner of the largest company Group Gamseong in Korea. Everyone had known that he definitely rich and of course handsome. He's 19 years old. He's kind, gentle and sociality, many girl are falling to his handsomeness and his wealth.

Lee Baekhyun. He's the second grandson of Directur Lee owner of the largest company Group Gamseong in Korea. Everyone had known that he definitely rich and of course handsome. He's 18 years old. Many girl like him because he's cute, kindly, gentle and adorable. He's charge of aegyo in his family, he like a moodbooster for everyone. He's acts so innocent and cute all the time, but when he got serious he's totally become manly and cooler.

Lee Sehun. He's the third grandson of Directur Lee owner of the largest company Group Gamseong in Korea. Everyone had known that he definitely rich and of course handsome. He's 17 years old. He's different from his brother, he's cold, to the point, and never smile. He's always put a hard-face to everyone. He's unsociality, but he likes animals and plants.

Song Joong Ki. He's the right-hand of Directur Lee. He's cool, charming, loving, kindly, manly, tractable, and loyal. Directure Lee gave him a task to be Chorong's personal bodyguard. He's taking care her a lot, he really protects her as her was a gold. He will not let her hurt in the slightest.

Kim Namjoo. She's 17 years old. She's Chorong stepsister. She really hates her. She never ever let her happy. She always did the bad things to her but she never mad at her even reply her actions, instead she just smiles and that's what makes Namjo hates her. She always compared with her. So she takes all she have to make her suffer.

Choi Sulli. She's 17 years old. She is Lee Brother's sister, they're close eachother since child. She's also the daughter of the largest company in Korea. She's princess, she's kindly, loving, cheerfull, innocent, cute and she really likes Chorong.

Oh Hayoung. She's 18 years old. She's Kai's past. She loves him but she made a mistake in the past that make Kai hates her. She's close to Sehun.