She just wanted to protect her brother for anything that harmful him, include the bullying that her brother got from his school.  She never expected that her brother hide this matter from her, even her older brother. Until a crazy idea popped in her mind. Through her sister in law and her younger brother's bestfriend's helped, she started to hide her identity and pose as someone else so sthat she could protect her brother without noticed by him.

But what if her disguise lead her to another story and someone that makes her life changes? 

Will she keep the secret about her disguise from the others?

Or at the last, will she reveal it for someone that makes her life changes?

Main Characters:

Im Yoona as Im Yoona & Im Yoong (18 y.o)

The one and only daughter of Ims. Or we can say that she is the 2nd child of Ims. A happy go lucky girl that does love her brothers that much, expecially her youngest brother and being protective to him after her parents had passed away. Different from her younger brother that has been  sent to boarding school, she is just going to an elite ordinary school. She is a prankster, choding and shikshin. And do not surprise, if a crazy thing always popped in her mind. Always assume that she is a straight and normal person that didn't interest with someone that has same gender with her, because it was something insane that she ever knew, plus she has a boyfriend that prove . But what if the situation that she has to face later break her assumption?

Jessica Jung as Jessica Jung (18 y.o)

Being the daughter of a boarding school's owner where she is studying at, is not possible for every student that study there to know her. Pretty, chic,  famous, but cold and bipolar. Yeah, she is the ice princess. Just being warm and friendly with someone that she knew. Not out going type person. We can say, she is including the one of spoiled brats through her atittudes because she is the one and only child in her family. Everyone knew, that she has interest to boy and girl, that's why every girl and boy in her school always try to chase her. But unlucky, she likes to play hard to get until the new student that just transfered to her school is changing her life.

Oh Sehun as Im Sehun (16 y.o)

He is the youngest son of Ims. Being cold and introvert person after his parrents passed away. Doesn't like to make his brother and especially his sister worries over him. Though he seems so careless and cold towards his brother and sister but in his deepest heart he does care and love them as they do to him. He just couldn't express his feelings well that's why he always gets bully from his friends and seniors because of his introvert and odd personality. 

Kim Jaejoong as Im Jaejoong (25 y.o)

The oldest son of Ims. He became the CEO of Im's enterprise after his parents had passed away because of an accident. He has to take responsibility for his younger sister and brother. Though he has already married but he still lives with her sister and brother so he could look after them. Maybe he looks so cold just like Sehun, arrogant, typical high temperament person but his warm personality always showed by him toward his wife and of course his sister and brother. 

Sandara Park as Sandara Im (24 y.o)

Jaejoong's wife. She does care, dote, and love her husband, include her sister and brother in law. Her relationship is better with Yoona than Sehun, it isn't because of she doesn't like Sehun or otherwise but it's because of Sehun that lives in the boarding school and just spending his time in the house when it was weekend or maybe holiday. So, she rarely meets him. She is also including  people behind of Yoona's crazy idea.

The Others Character:

SNSD, EXO, 2PM and the others (you can find in the story later)