You are the only child of a man named Ji Chang Wook aka Chang Wook and your mother, Soohe, died several years ago due to an illness she was suffering from, but after you grew up, your father started to like someone and he even married a Japanese woman who really beautiful, and she has two twin boys named Niki and Riki

automatically... they both become your stepbrothers ;), and currently your father and stepmother are on their business trip, but don't worry, you are not alone at home, but with your two siblings, and you are now writing something on your notebook until suddenly you hear someone knocking on your bedroom door