This Ecchi Anime is the Sequel to High School DxD OVA Series. Based on a light novel series by Ishibumi Ichiei with illustrations by Miyama Zero.

Issei finds new troubles about to befall his life and two of them tend to sleep in his bed. While looking at an old photo album, Kiba notices a familiar sword being held by Issei's old friend, which reopens old wounds. Meanwhile, Devils, Fallen Angels, and The Church's agents all clash to get their hands on, or just destroy, powerful weapons called Holy Swords. If that were not enough, Issei's red dragon Ddraig warns him that he senses an old rival, the white dragon Albion, drawing near.