He never asked for this power. Kojou Akatsuki used to be an ordinary high school boy--but that wasbefore he became the Fourth Primogenitor, the most powerful vampire of all time. Worse--he doesn't even remember how it happened. Middle schooler Yukina Himeragi, meanwhile, is the Attack Mage sent to observe him--and to stop him if he gets out of control. But was it really a good idea to send a cute girl to observe a massively powerful vampire boy whose abilities activate whenever he gets aro...

Kojou Akatsuki lives on the artificial island of Itogami, and he has a secret: He's the "Fourth Primogenitor," the most powerful vampire in the world. He's carefully kept this dark knowledge from his family and friends, but one day, a beautiful girl named Yukina Himeragi appears before him and tells him that she knows who he really is--and that she's been sent to...kill him?!

An honorable knight fallen from grace…returns as a total stud! Ras Talion was once a respectable knight who single‑handedly slayed a Greater Dragon, but he lost his beloved in that same battle. Now Ras is a mercenary and a hedonist who visits brothels night after night. He’s even known throughout the empire by the derisive nickname “the Stallion.” One day, he comes face‑to‑face with the impossible—the supposedly deceased imperial princess Fiarca, his ex‑fiancée. Alive and kicking, she assi...

The friend of my friend is my enemy?!Akatsuki (an ordinary high school boy and incidentally the world's mightiest vampire) is finally getting used to daily life with Yukina Himeragi, the attack mage whose job it is to observe him. But his peaceful life is interrupted by the appearance of Dimitrie Vattler, an envoy from the European primogenitor known as the "Lost Warlord." Vattler's enough of a problem, but it turns out he's got his own watcher, who's friends with Yukina--and who wants Koj...

(Volume 1)Kojo Akatsuki is an ordinary high-school boy--but when that high school is in the Demon District of Itogami City, "ordinary" means something rather different. He might be a vampire, for example. He might even be the most powerful vampire of all time. Middle schooler Yukina Himeragi, meanwhile, is the attack mage sent to observe him--a cute girl sent to observe a massively powerful vampire boy whose abilities activate whenever he gets aroused, on an island city full of all manner ...

The war that changed everythingIt’s a Valentine’s Day that Kojou won’t soon forget! Amid the buzz of crushes and chocolate, dark words arrive on the wings of Glenda, the Dragon of the Swamp. Velesh Aradahl is holding Yuiri and Shio captive! And using them as collateral, he challenges Kojou to a vampire duel...At the same time, the Holy Ground Treaty Organization has deemed all of Itogami Island—altar for The Cleansing and domain of Dimitrie Vattler—a global threat. The only way to get the ...

To save Avrora, Kojou lays it all on the line and gives up his Fourth Primogenitor powers…but the battle is nowhere near over. The Encroachment of Nod begins, and Shahryar Ren’s true ambitions are revealed: to restore the Deva legacy for world domination! Facing the overwhelming might of the Beast Vassal Warheads, the only option seems to be the destruction of Itogami Island-a task assigned to Yukina Himeragi! Torn between duty and friendship, Yukina is tormented by the decision she is for...

Itogami Island is abuzz with preparations for the Halloween festival, and who should be visiting for the occasion but Kojou Akatsuki's friend from elementary school, a girl named Yuuma Tokoyogi. But as Kojou reunites with his friend, his homeroom teacher, Natsuki Minamiya, goes missing! Meanwhile, a strange space-time distortion is turning the sanctuary of Itogami Island into a labyrinth from which escape is impossible. And what's behind the physical changes that come over Kojou whenever h...

When Kojou Akatsuki went to visit his sister in the hospital in middle school, he met a vampire named Avrora. Once he learned she was the key to saving Nagisa's life, he helped Avrora escape. Now, the weapons dealer Zacharias is telling him to hand over Avrora in order to rouse the fourth primogenitor! As Zacharias's plans plunge Itogami Island into peril, the fourth primogenitor finally awakens...

DEMON DIPLOMACY IS HARD WORK... There’s a celebration to be had in the kingdom of Aldegia, and Princess La Folia invites Kojou to join in the festivities. Reluctantly accompanied by Kanon, he travels to the royal palace for the signing of a peace treaty between Aldegia and the Warlord’s Empire. Not all are in favor of the agreement, and many hold their breath in anticipation of violent opposition. Unfortunately, these fears are realized when a large-scale terrorist plot brings a deadly mon...

A RACE AGAINST TIME...Kojou has finally defeated The Blood, but with Shahryar Ren abducting Avrora and fleeing to another world, there’s no time to celebrate. Since Kojou’s vampiric powers are gone, staging a rescue seems impossible…until the First Primogenitor, Ki Juranbarada, shows up with a tempting proposal: He’ll grant Kojou a new set of Beast Vassals if he agrees to put Ren’s ambitions to rest. But when Juranbarada’s gift transforms Kojou into a monster devoid of reason, it’s up to Y...

NO REST FOR A PRIMOGENITOR…It’s a new term at Saikai Academy, and fortunately for Kojou, hehasn’t been held back a year! Freed from his constant work defending Itogami Island, he is ready for some peace. However, an entirelynew demon beast appears, and when Rui and Yuno are dispatched to deal with it, they are gravely wounded. Kiriha forms an unlikelyalliance with Shizuri, who is dead set on avenging her friends. Meanwhile, the Japanese government has concerns about Yukina’s ability to con...