Kojou Akatsuki

Kojou was a normal high school student 3 months ago until the original 4th primogenitor had released her spirit into him because of a wish she had granted him. Its possible they made a deal. Sometimes his vampire urges try to take over and his eyes are about to turn red. He usually gets a nosebleed and coughs. Yukina claims that it is impossible for a human being to randomly become the 4th primogenitor but he cant remember any details of the incident. As a vampire he possesses superhuman strength speed reflexes and durability but is much more powerful than normal vampires due to his status. He has also inherited Avroras twelve familiars. Source: Wikipedia