Yun Ce knew he was different from others since he was little.
He was different from his elder brother.
He was a result of his father's one-night stand. The female vampire left as soon as she gave birth to him, so Yun Ce had never seen his mother.
The formal wife of the Yun family disliked him, and his father cared little about him. He had been living a cautious life in the Yun family.
Yun Ce was a half-vampire, half-human hybrid. Most half-bloods would show human-like habits; only a few would act more like vampires.
Yun Ce was not among the minority that tended toward vampires, but he was forced to be one of them.
His special physicality made him very weak and cowardly as a child. Not only that, but the family had an excellent eldest brother, so Yun Ce didn't get much attention.