Suzy and Hyosung are bestfriends eversince they're little . They treat each other like sisters . Since little , they always play and even go out together. They never even seperate. One day , Hyosung's parents sent her to overseas to study. Hyosung didn't even get to say good bye to Suzy. As they grow up , they met each other back . They decided to stay together in an apartment which Suzy's parents bought. Both of them