Top Definition
One of the main characters of the anime / manga Vampire Knight. Zero belongs to a family of vampire hunters, the Kiriyu family. He's got a twin brother named Ichiru. Although he is a vampire hunter, Zero's also a vampire 'cause he's been bitten by the pure blood Shizuka Hiou.
Yuki: Zero Kiriyu, I love you! :D
by Elysia Hughes April 24, 2008

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