Strike the Blood

A teen vampire legend and his sword‑shaman watchdog team up to stop the city’s nightmarish chaos.

When Kojou Akatsuki, a laid‑back teen living in Itogami Island’s Demon District, is thrust into the night after a bizarre incident, he awakens as the Fourth Primogenitor—a vampire of mythic strength. No longer just a regular student, his newfound powers attract every kind of attention, from hungry monsters to shadowy government agencies. The Lion King Organization, a secretive group tasked with containing supernatural threats, dispatches its most promising apprentice, Yukina Himeragi, a sword‑wielding shaman with a strict code and a dead‑eye focus on eliminating any danger. Yukina’s mission is simple: watch Kojou, and if his power ever threatens the city, end him. What starts as a cold surveillance quickly morphs into a reluctant partnership. Kojou, still grappling with his blood‑thirst and the responsibilities of his legendary status, learns to wield his abilities without losing his humanity, while Yukina discovers that the world isn’t as black‑and‑white as her training manuals suggest. Together they fend off rogue vampires, rogue sorcerers, and other occult calamities that erupt across the urban sprawl, all while navigating the chaotic dynamics of a harem‑filled school life. The series blends high‑octane action, supernatural intrigue, and a dash of fan‑service, delivering a fast‑paced ride through a modern fantasy underworld.

A high school boy becomes the legendary fourth primogenitor vampire and partners with a sword-shaman girl to fight supernatural threats. Expect frequent fan service and harem dynamics alongside fantasy action violence with blood.