Kim Myungsoo never took his relationships seriously. He never made efforts to call his girlfriend or even show up in times when she badly needed him. To cut the story short, he was a hell of an boyfriend. One day his girlfriend gets into an accident, he grieves and regrets all the things he had never done to her, things that average boyfriends do to their girlfriends

You know what's ironic? Falling for the guy you think is right for you but then some weird mail comes up and tells you that he's related to you? I just fell inlove yesterday--and now i get news that i just slept with my half-brother?! Jeez.