Zero Kiryu

Bio
Zero Kiryu is a unique both vampire and vampire hunter. Even being a vampire he despises those "beasts in human form," especially purebloods because a pureblood took away his humanity and the lives of his family. This makes him act bitter, melancholy, and slightly insolent  to a far  extent that even the look of his eyes  scare others, except Yuki; even though his true nature is gentle, kind, and cares about the safety of humanity from vampires; but the most true precious thing to him is Yuki. In arc 1 Zero attends Cross Academy. He was a guardian/prefect along with Yuki. His anti-vampire weapon is a beautiful gun called "The Bloody Rose" which is extremely powerful gun that can kill a vampire with a single shot or diminish their healing powers to nothing and they die slowly bleeding to death, when he shoots, the bullet is followed by a shape that glows bright red/pink  resembling his unique tatto on the left side of his neck which intimidates vampires. Zero is 17 in arc 1 and turns 18 after one year timeskip in arc 2.


 * Arc 1(during arc 1 the story evolved especially around Zero and his vampire transformation)

At the beggining of the manga and series, Zero acts arrogantly and anti-social contantly pushing people away,  especially Yuki, much to Yuki's dismay always wondering why he is always pushing himself from others. Later it is explained that Zero is slowly falling down to becoming a Level-E vampire ( Kaname and Kaein where the only ones who knew this)'':which is those humans  who are bitten by a Pureblood but in order to complete the vampire transformation, they must also drink the blood of their creator. Then the human has completely been transformed into a normal vampire and has become an immortal. Note: this practice is done by a vampire and human who are in love  commonly. (only Purebloods can do this which are vampires who are pure vampires with no human blood in their veins,  [these Purebloods are rare]) If its not complete the once-human starts to slowly becomes desperate and thirsty for blood and the more it waits to drink, the less self-control they have and they start  attacking every human uncontrollably to drink blood and the only way to stop it is for that fallen human to be killed''. So,to avoid getting people hurt, Zero distants himself from others, and the one who he most desires to drink blood from is Yuki. So he acts the most coarse to her to keep her away for her own safety, however, Yuki doesnt knew he was a vampire and she keeps insisting to get closer to him, Zero realizes that he doesnt want to be so distant from her, as he is deeply in love with her,( Which an innocentYuki is complety unaware of) however after seeing  a bloody wound palm of Yuki, Zero  snaps and grabs her, licks her neck, and pierced mercilessly into her soft neck with his sharp fangs. Yuki is confused and sees blood tablets near him, and a shocked Yuki pushes him and gazes in fright at his vampire side (the tatto on the left side of his neck glows blood-red as well as his eyes). Zero snaps out of his bloodthirsty-state and looks regretfully at Yuki and apologizes. He tries to get close to her, but a terrified Yuki pushes him away unintentionally with her words, even sinking down Zero more into pain in his heart. Kaname seeing the bitten Yuki becomes enraged and almost attacks Zero, but Yuki stops Kaname and slightly faints, revealing that Zero drank a heavy amount of Yuki's blood. Kaname picks her up, takes her to the infirmary and tells her of Zero's incident with a Pureblood when he was 12 :the same year he and Yuki met, much to her shock, much to her confusedmeant. In the anime Kaein is the one that tells her that when he found Zero, he had a deep bite mark on the left side of his neck (same place where his tatto is ) much to Yuki's shock because she never realized it since she was the one who took care of him after Kaein took him in. Yuki cries not because of fear, but because she finally realizes the pain Zero must have gone through 4 years all by himself and blames herself for Zero's downhearted mood. Zero later is showing washing the blood from his face and a downhearted gaze in his eyes, realizing he had harmed the most dear and valuable person to him. The next day, Zero doesn't go to school, and a concerned Yuki goes to see him at his room. Zero is gazing at a high school picture of him and Yuki and points his anti-vampire gun at his head planning to commit suicide, however, Yuki stops him and Zero gives her the gun, and points it towards him and encouraged  her to kill him herself. Yuki couldnt bring herself, watching Zero with tenderness so then he leavesr with his packed stuff planning to run away. Yuki sees the picture of them both and runs desperately after him. When he wouldnt stop walking away  she threatens to shot and once again  he insits her to do it and  encourages Yuki to shot him, but instead she drops the gun and hugs him tightly, and  a pained Zero releases himself into the warmth of her arms (Yuki completly oblivious) and she tells him that its ok that he bit her and  that she will always stand by his side. Promising to protect him. This leads into him remebering a same moment they shared when he first met her and he stays.

Kaname wants Zero moved to the night class, and Kaein gets him the night class uniform and a determined Yuki doesnt want that. So then with a bracelet and Zero's tatto, Zero and Yuki  perform a taming ritual for him. Yuki is later seen holding tightly the bracelet and faintly blushes. This makes her to become closer to Zero and Yuki goes as far to let him drink her blood whenever he needs it even though it is a terrible "sin" feeding a turned- vampire blood since the results from it will make it worse. Yet, Yuki wants Zero to be able to live longer while she figures out the way to cure him. Later on Shizuka Hio the pureblood who turned Zero into a vampire and killed his family shows up as Maria Kurenai in a different younger form of a girl  to the school and the only ones who know this are Kaname, Kaein, and Zero since he can "sense" her because she is his "creator". Yuki wonders why Zero acts strange since "Maria" arrived and keeps telling her to stay away from her; and one night after Zero tutors Yuki he faintly smiles at her and this makes Yuki more concerned as he was acting tired of living, as if it were the last time she would see him. Zero gets up and hugs her tightly from her back, Yuki questions him again but Zero just  says that the reason he kept living on was because of her, he lets her go and leaves. She gets even more worried and a little scared and runs after him and she finds Zero pointing the Bloody Rose at Maria's heart, overhearing that it is Maria that "pushed Zero into the dark world of the vampires." Zero is unable to pull the trigger and now Shizuka tells him that he cant kill her because she is his master.

(will be continued...