Sato Rein. On the surface a normal Japanese guy that's just finished middle school with his best friend and exchange student from Australia James. However three years of neglect from his family for an unknown reason along with having his best friend return to his home country leaves Rein dreading his future. But all this becomes meaningless as Rein nearly dies at the hands of a car with James barely kicking him out of the way in time saving his life.Blood everywhere, New instincts telling him to drink all of it leaving James who's already barely hanging in danger.But what's this his family is actually talking to him. They said he's a vampire now and most shocking of all is he's now the identical twin of his sister Alice. He's become a beautiful silver haired girl called Reienne.