Watch Strike the blood

Strike the Blood is an anime OVA series that debuted in 2013, adapted from the light novel series written by Gakuto Mikumo and illustrated by Manyako. Set in a fictional world where the supernatural coexists with the mundane, the story unfolds in a highly urbanized setting known as Itogami Island, a locale that serves as a haven for demons, magic users, and other mystical creatures. This vibrant setting serves as a backdrop for an engaging blend of action, fantasy, and harem elements.

The narrative centers around Kojou Akatsuki, an ordinary high school student who unexpectedly becomes the Fourth Primogenitor, a powerful vampiric figure. This transformation thrusts him into a world of danger, intrigue, and supernatural conflicts that he never sought out. The Fourth Primogenitor is notable for their unparalleled strength and unique abilities, making Kojou both a target and a prized asset within the demon and magical communities.

As the series progresses, we learn that Kojou's new existence is characterized by not just immense power, but also the responsibilities and complications that come with it. He becomes the focus of various factions striving to either eliminate or control him, each with their own motivations and often conflicting goals. This creates a tense atmosphere filled with danger as Kojou navigates his newly altered life.

Additionally, a key character in the story is Yukina Himeragi, a skilled Sword Shaman assigned to monitor Kojou. Her initial role is to observe and report on him, but as their relationship develops, it takes on deeper dimensions. Yukina is not only tasked with keeping Kojou in check but also provides a moral compass for him. Her strong sense of duty, combined with her growing bond with Kojou, adds layers to her character and influences much of the narrative

Strike the blood is a series that ran for 2 seasons (30 episodes) between October 4, 2013 and on Anime OAV