Oh Sehun is an cold guy who fell in love on a unknown girl who he taught she was a normal person. As the months go by..He knew she isn't an ordinary human after all.. But the girl who he loves didn't know who she was or what she is.. She's one of the dangerous unknown half human being in the world.. But no matter what the other people will do..they will never stop loving loving each other even if it's dangerous for Sehun to love a dangerous girl like her,,