Holy Knight  

ホーリーナイト, Holy Knight (ホーリーナイト)

The narrative revolves around a shy orphan called Shinta Mizumura, who attends a missionary institution in Tokyo. His routine life takes an unexpected turn when Lilith, a stunning half-human girl from Romania, enrolls at his school. As the story unfolds, Shinta learns that he is not just any ordinary person; rather, he is a descendant of the Romuald lineage and destined to become a vampire hunter.