Mina's arrival forces Akira to live the oath he made as a child, and the show trusts that promise enough to build everything around it. The vampire world-building is sharp, abilities have costs, politics have teeth, and the romance between them isn't decoration, it's the entire plot. Fair warning: the fanservice skews aggressively young, and the art style won't convince everyone it belongs on screen.

Mina Tepes, ruler of all vampires, goes on live television to reveal that her kind exist and to announce a plan for the Vampire Bund, a haven for vampires in a special district off the coast of Japan. She secured the right to build it by using her family's fortune to pay off the nation's debt. Not everyone trusts her, and terrorists, rival factions and suspicious humans all turn against her. Akira Kaburagi doesn't believe in vampires and has lived calmly since a head injury a year ago, until meeting Mina stirs forgotten memories. He learns he is a werewolf, sworn from birth to protect the vampire queen even at the cost of his life. Supernatural action and romance follow.