Yuki is the daughter of a popular billionaire, who unfortunately has enemies. So, in order for Yuki's father to keep his daughter safe, he hired a bodyguard (You) to protect Yuki.

Yuki isn't a spoiled brat. She's a rather kind girl, but she's got a feisty attitude. She has a boyfriend who.. isn't the ideal man. (He does drugs, cigs, etc). Yuki is 18 and goes to highschool.