High School D×D: Season 4, Episode 5

4 - 5: Showdown! Gremory Family vs. Hero Faction in Kyoto

The Hero Faction has arrived and Cao Cao wants to cross blades with Azazel and the Red Dragon Emperor. In such a dire situation, Issei must respond quickly so all his friends make it out of this alive. Will he ever find his "potential" and release it?