Yoona or Im Yoon Ah is the most pretty girl in Donghae’s heart. He thinks that Yoona is almost be a perfect girl. Because she have a long black hair, perfect body, pretty face, smart and growed in one of the rich family in South Korea. He promise that he wouldn’t have a relationship if it’s not with Yoona. Even many girls in the campus like him and want him being their boyfriend. But poor.. Yoona didn’t like him. Donghae is a popular guy in their campus, Seoul University