The Skeleton's Key

Long ago, there lived a young boy named Alexander. He was part of an incredible demon family who only wanted their son to be a killing machine, but he was different. He was kind and gentle, never wanting to hurt anyone. He was sent away to a prep school for demons just like him, and notices a young skeleton girl who lives as a maid in the dormitories. Can she change the way he is taught to be? or will the demon inside of him come out and destroy her..