Hisui Kujou

Hisui Kujou (緋水・紅城) (kid on the right) is the main protagonist who wants to live peaceful life. After his high school ceremony, he is suddenly attacked by a vampire and drained of some blood, but doesn't transform as he is supposed to. Instead, he remains unharmed by the "kiss" (bite) he receives. This is from an ability called 'Anti-Dracula'; no matter how much a vampire tries to make him theirs, they will always fail. Therefore, even if a vampire kept trying to suck his blood, use Mystic Eyes or any other means, there would be no point in doing so unless they did it to keep themselves alive or if they wished for him to die of blood loss. This is shown in his fights with Kishida and Fergus.

Hisui is considered attractive by many of the girls in school. This is because of his very slim body build. Unlike most guys, his hips are still relatively small, he possesses a very girlish skin complexion and in a sense looks like a girl. The only thing that distinguishes him from being a girl is his chest size, the school uniform he wears, and the voice he uses. He is thefore the envy of many of the guys in school on day one. He is also the main attraction of the girls, though most of them give up on trying to be with him after they wrongfully assume that he and Rushella have an intimate relationship. Despite his features, Hisui is actually much stronger than he looks, and can defeat anyone who poses a threat to him. This would've helped him beat Fergus if it was not for a rare vampire's powers of turning to mist, but he used it to defeat Rangetsu.

Hisui has a very dark past. Before being adopted by his foster mother/older sister, he lived with very sadistic and abusive parents, who tried to make him commit suicide when he was only seven. Miraluka saved him by killing them, something which he was grateful for, but something which scarred him for life. When raised under Miraluka, he learned a lot about vampires, and many supernatural entities which existed around the world. A few years later on an overseas trip, Hisui would be critically injured. He was severely injured, and needed a heart transplant. He received Miraluka's heart, which was transplanted through heavy surgery. This caused him to grow up with a huge scar on his chest, the only blemish on his body. It is also the reason he bears the constitution of blocking a vampire transformation, and also regenerating from basic wounds easily. A vampire's heart is what protects him. The only time it failed was during a doppelganger incident at Seidou Academy. Miraluka lived on because even though her heart was not inside her body, it was still existent, and beating inside another. This all changed after she disappeared and should've died. From that day on, Hisui lived alone, and hardly every trusted anyone he met.

Hisui may be an apathetic person when one sees him at first, because he is only trying to keep as far away from trouble as he can. But this doesn't mean he doesn't care about anyone close to him. He is willing to sacrifice anything for any of his friends, and even give his life. He can also express extreme emotions, such as anger when someone crosses a line that is drawn solid, such as Rushella does in volume 2 after she breaks his most treasured wine bottle (no he doesn't drink). He also cries at the very end of the series when Miraluka, his foster mother/elder sister dies, as he holds her ashes. These are reactions Hisui doesn't encounter as often as a normal teenager, but deep down he still has a soul, one which is more fragile than anyone else's in the story.