A single unaired OVA episode from the High School DxD BorN part of the franchise, released in 2015 as a bonus packaged with the limited edition of the High School DxD DX.2 light novel volume. The franchise is based on the light novels written by Ichiei Ishibumi and illustrated by Zero Miyama. Like the series it accompanies, the episode mixes action, comedy and fantasy with ecchi fan service.