EP 01Holiness Behind the GymAfter casting Asia into the Dimensional Gap, Shalba Beelzebub kills Diodora for his failures. Distraught and enraged by Asia's demise, Issei's Juggernaut Drive is activated and he engages and kills Shalba in a duel. Unable to transform back after defeating Shalba due to the incomplete state of his transformation, Issei is stuck in his Juggernaut form. Meanwhile, Vali's team arrives and brings Asia back from the Dimensional Gap, much to Xenovia's happiness. After Vali explains that music has the ability to calm a dragon's rage, Irina appears with a projection device from Odin and it plays the "Oppai Dragon Song".
EP 02That’s Right, Let’s Go to KyotoIssei and his classmates arrive in Kyoto. Although Issei is ready to enjoy Kyoto to the fullest, getting stronger is s always on his mind. However, it seems training isn't the only thing to worry about in Kyoto. Powerful groups have begun to move.
EP 03School Trip, an Abrupt AttackIssei and the others continue their training, even while they fully enjoy themselves in Kyoto. Issei's group meets the mysterious nine-tailed fox once again and, this time, she begs them to help the youkai save her mother from the Chaos Brigade.
EP 04The Party of HeroesThe 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?
EP 05Showdown! Gremory Family vs. Hero Faction in KyotoIssei and his team meet with Cao Cao at the Nijo Castle and find Kunou's mother there. A showdown between the two factions begins. Pushed into a corner, Issei finally finds it inside himself to unleash his inner potential and call for what is his.
EP 06My Potential Released!Issei summons his beloved President into the heat of the battle in Kyoto. As she floats before him, Elsha whispers into his ear to poke her boobs. Pressing the switch releases his potential power and Issei challenges Cao Cao once again.
EP 07The School Trip Is in PandemoniumThe Chaos Brigade has quieted down since their stunt in Kyoto so Issei and the others must now focus on other issues. After all, there are hero shows to act in, a school festival to prepare for, and the ever-looming Rating Game with Sairaorg...
EP 08We Are Preparing for the School Festival!The Gremory family is now in full training mode for the upcoming Rating Game. However, Issei has a lot of other things on his plate. There's a school festival to prepare for and a press conference to overcome. On top of that Rias is acting strange?!
EP 09A Girl’s Heart Is ComplicatedThe Rating Game is about to start, but Issei has things to figure out. He has formulated a guess as to why Rias is acting the way she is, but does he dare believe it? His girls give him courage. And, finally, their team steps out into the battlefield.
EP 10The Deciding Battle of the Strongest Youth, Begins!The competition in the Rating Game is getting heated. Can Team Gremory keep their cool and prevail, or will Issei be undone by a strip show?
EP 11As a Family Member of Rias GremorySairaorg has finally risen up to the stage and Kiba, Xenovia, and Rossweisse team up against him. The battle is swift and brutal and Issei is finally reaching his bursting point. Will he be able to channel his feelings? Or will resentment take over?
EP 12Max vs Max. Power `Man Versus Man`Issei purges the curse of his Sacred Gear and stands up once again, in his form as a Queen piece. Sairaorg and Issei duke it out in one final fist fight where winner takes all. After that, the only thing he has to worry about is his confession to Rias...EP 13Maximum vs Power.Maximum `Lion Heart of the School Festival`The fourth season of High School DxD. Issei and the 2nd years attend a class trip to Kyoto for well-deserved relaxation, leaving the senior and junior class students of the Gremory family behind. However, once there, they fall under attack and must win without Rias or their other powerhouses. (Source: Anime News Network) Includes episode 0, Taiikukan-ura no Holy.
