Shizuka Hio

緋桜 閑, Mad Blooming Princess
The pureblood vampire who bit Zero even her fellow vampires are uneasy around her. She is called Mad Blooming Princess by her fellow vampires. A manservant whom she loved a former human vampire said to have never fallen to Level E was killed by a Kiryu vampire hunter. In retribution she attacked the Kiryu family killed the parents turned their son Zero into a vampire and took Zeros twin Ichiru in as a devoted servant.