I absolutely love this manhwa because it really goes in detail of the characters from their childhood to their adulthood. The story is about a girl who is an orphan, but live amongst street gangsters. She conceals the fact that she's a girl so that she can survive. One day she's taken in by a rich family and becomes the family's granddaughter's bodyguard. The owner of the house tells her to conceal the fact that she's a girl to everyone and concentrate on training and protecting the weak granddaughter. Hyunbin is the name that is given to the heroine. She lives her life as a bodyguard for many years and go to high shool with the granddaughter. While there, she meets many different people, and even guys who fall in love with her despite the fact that they all think she's a boy.

The story gets even more interesting because the Hyunbin was taken into the rich family for her use later on when she gets older. She is concealed as the family's grandson and is allowed to be kidnapped by another family, who happens to be a mafia, and the enemy of the original adopted family. She has to contain her secret of being female for 9 years with the mafia, so that they do not know that she's the fake grandson. She also has to give up on her love back at the high school.

The story is really original and interesting.
I love the fact that it has 32 volumes, because I really hate underdeveloped storyline and characters. You'll really regret it if you miss this manhwa.

If you love gender bender and shoujo, this one is definitely for you!