Ep. 6: Issei and allies face Kokabiel until White Dragon Emperor Albion intervenes to end the battle.

6

Issei transfers his Boosted Gear powers to Rias, but both she and Akeno are overwhelmed by Kokabiel. Kokabiel mocks Rias by revealing Akeno is the daughter of Fallen Angel Cadre member Baraqiel. Enraged, Issei attempts to attack, while Kiba, Xenovia, and Koneko try to buy him time but fail. Kokabiel shocks Xenovia by claiming the Four Great Satans and God died in the previous Great War. Issei declares his dream of becoming a Harem King, inspiring his friends to fight again. The battle is interrupted when a stranger destroys the school field's barrier. Identifying himself as the White Dragon Emperor Albion, he defeats Kokabiel, disables the school's self-destruct spell, and removes Kokabiel and Freed from the area. Sona and her team repair the school, and Kiba reaffirms his loyalty to Rias. The following day, reincarnated Devil Xenovia joins the Occult Research Club and reconciles with Asia. Issei later plays a video game with his client, who reveals himself to be Fallen Angel Leader Azazel.