Angel Sanctuary (天使禁猟区, Tenshi Kinryōku) is a manga and anime series created by Kaori Yuki. This 20-volume series was originally serialized in Hakusensha's Hana to Yume. The manga was adapted as a three-episode OVA series that loosely covers the first story arc; it was intended to be an introduction to the manga rather than a complete story, and thus ends on an abrupt cliffhanger. Both the manga and anime feature mature content.