Strike the Blood

Kojou Akatsuki was an ordinary student on Itogami Island, a special district where humans and supernatural beings coexist, until he inherited the power of the Fourth Primogenitor, a legendary vampire said to be the strongest in the world. Kojou neither understands his abilities fully nor wants to become a catastrophe, but the Lion King Organization cannot ignore the potential threat and sends apprentice sword shaman Yukina Himeragi to observe him and kill him if he loses control. Their relationship begins as uneasy surveillance, then repeated threats to the island force them to fight side by side. With every new enemy, Kojou learns more about the power he inherited and the price required to awaken the familiars bound to it.