You just moved to Seoul, you got a neighboor, her name is Jadoo, she was the oldest of three siblings. She was cute, but was an idiot and a big tomboy. Soon enough, you know you and her was in the same class. You enter the class, all student was turning to you, Younsok, the head of the class spoke Younseok: "Hello, i am Lee Younseok, the head of the class!" Seong Hoon, spoke up: "hi there." Jadoo, as always, not paying attention and talk with her bestfriend, Minji.