[quote=@Blizz]
Question, does a vampire have to feed on human blood? I know that a vampire literally cannot harm another vampire, it's a law of existence, I'm asking because I intend in making mine a character who doesn't bring harm to humans, and not kill an animal, but simply take blood and let it live, if I can.
[/quote]

Well Adam is in charge of Yamada Corp who create synthetic blood in which vampires can survive on.