Kaname Kuran

A Pureblood Vampire and the current Head of the Kuran Clan, saved Yuki from an attack by another vampire when she was five years old. He is the class president of the Night Class as well as the dorm leader, much feared and respected by the other Night Class students. While he is cold and authoritative towards his fellows in the Night Class, he is always kind and sweet to Yuki. He has shown that he cares deeply for Yuki and loves her in a romantic sense. He allows Zero to live because he knows his death would sadden Yuki as well as because Zero is useful, both to Yuki and himself. He is both jealous and angry of Zero for biting Yuki and endangering her life. Kaname has been raised as Yuki's older brother. At a young age they had pledged to marry each other when they grow up, just like Haruka and Juuri, who were siblings yet married to each other. It is common for pureblood siblings to marry and is essential to keep the bloodline pure. Kaname reveals to Ichijo that he is not Yuki's brother and is really the ancestor of Kuran and was resurrected by Rido Kuran to be his strongest slave, therefore making Rido his "master". Juri and Haruka Kuran raised Kaname as Yuki's brother, in place of the son that Rido took and used as a sacrifice to revive Kaname.