Holy Knight
English name: Holy Knight
Genres: Fantasy, Ecchi
Type: OVA, Episodes: 2
Aired: Mar 21, 2012 to May 25, 2012
Studio: Lilix
Source: Manga
Rating: R+ - Mild Nudity
Synopsis:
The story centers around a timid orphan named Mizumura Shinta who goes to a missionary school in Tokyo. His seemingly normal life changes when a beautiful half-human Romanian girl named Lilith suddenly transfers into his school. Mizumura discovers that he is actually a vampire hunter and the successor of the Romuald lineage.

(Source: ANN)