While the others were discussing plans on how to stop the ones causing the barrier and the attack, Vali and Y/N were outside the school, causing havoc among the human magicians.

Vali: Balance Break!

Albion: Vanishing Dragon. Balance...Breaker!

A bright blue light emits from Vali and it soon fades, revealing him in a his Balance Breaker. His Scale Mail Armor.

Issei: (from inside school) That easily!? I had to sacrifice my left hand to do that for ten seconds!

The magicians fire their magic lasers, aiming at Vali. But, his magic was so powerful that it was easily blocked by the amount of magic circles that he was producing.

On Y/N's end, he was slashing through multiple magicians, tearing his swords through their bodies.

After eliminating a few, he flies back a little, producing multiple colored orbs at his side.

Y/N: Generate all elements! (flies forward) Discharge!

The orbs fly towards their foe's exploding upon impact with the elements of light, dark, fire, water, ice, and air. Y/N's sword glows blue and and drags a group of magicians together, using {Starburst Stream}, eliminating multiple foes.

Y/N: Starburst...Stream!

A loud burst of magic occurs as Y/N looks to the source. Vali had produced a giant orb, which he releases, sending a surge of electricity in the area, eliminating a majority of the magicians.

At the same time, even more magicians pour out of the giant magic circle that rested in the sky.

Y/N: (thoughts) Damn! If this keeps up, I'll be overtaken by Gasper's sacred gear!

Y/N senses the magic beams that were heading for him. Using his powers of flight, he quickly dodges the beams. He raises his right hand, sending out a burst of flames and with his left hand, he sends a torrent of aerial magic.

The aerial element cuts the magicians, causing them to dissipate into yellow-like pixels. Y/N then senses a strong magic presence appear in the room where all the Satans were.

Y/N: Kaa-san!

He travels at full speed, hoping he makes it to his mother on time. As soon as he peers through the window, he sees a tan girl with glasses. Just who was she?

???: Good day Satans Sirzechs-dono and Serafall-dono.

Serafall: Wh-What are you doing here!?

Sirzechs: The descendant of the previous Leviathan, Katerea Leviathan!?

Katerea: Chaos and ruin to the world...

She raises her staff, emitting a bright orange light. Soon after, an explosion occurs. Y/N's eyes widen in horror as he thinks his mother perished in the explosion.

It clears soon after, revealing everyone to be in a barrier that was put up by the three faction leaders. Y/N sighs in relief, but felt a sharp pain in his back. He watched as his mother's eyes widen in horror as does Kiba, Irina, and everyone else.

Katerea: The leaders of the three factions putting up a protective barrier together? (laughs hysterically) How pitiful! Not only that, you're a disgrace Serafall-dono. Taking in a human as your own? Pitiful! Truly pitiful!

Katerea had embedded a magic sword through Y/N, and she swiftly swings it horizontally, severing Y/N's lower half.

Serafall: Y/N!

Sirzechs: What are you trying to achieve, Katerea!?

Katerea: To do exactly what this conference sought not to do. If God and the Satans are gone, this world will be ready for revolution. Also to discard this piece of scum.

Katerea launches some sort of dark energy tentacles and and stabs it into Y/N's body. Irina was letting the tears loose.

Serafall: What are you doing to my son!? Stop this, Katerea-chan!

Katerea: Serafall...you are the one that stole the position of Leviathan from me! And you disgrace Devil kind by taking in a human as your child!

Serafall: I...

Katerea: Don't worry. I'll kill you right here, right now and take back the title of Satan Leviathan from you. But first, starting with this weakling of a child.

A magical presence spikes up. Everyone looks to Y/N who was releasing a golden aura. He looks up with an angered look, golden eyes illuminating brightly.

Y/N: Don't you dare talk about my mother like that! Release Recollection!

He brings his two swords together. The Blue Rose Sword emanates a deep blue aura, and it shoots out a pillar of ice along with tendrils that had roses on them, wrapping around Katerea. Y/N then raises the Night Sky Sword into the air like he did with Kokabiel, gathering the energy of his comrades. The energy then restores his severed half.

The Night Sky Sword then glows a deep purple and Y/N readies his two blades, preparing to use a skill that he had finally perfected. One that he had been trying to perfect for years ever since he started to dual wield two swords. He called it, the Eclipse.

He charges forward, swords glowing blue as he uses the perfected and most powerful dual wield skill he made, {Eclipse}.

Y/N: Eclipse!

The blows were so fast and powerful, it sent shock waves crashing into the ground, causing the whole area to shake and rubble to explode from the ground, lifting from the Earth. With the final hit, it sends Katerea crashing into the ground, skidding backwards.

But because of the dark power she got from someone, it protected her from Y/N's skill, but it still led her to be severely damaged.

Katerea: You damned brat!

She sends out her dark tendrils, which were barreling towards Y/N. Y/N produces a golden barrier, destroying the dark tendrils as he flew towards Katerea.

He lands on the ground, proceeding on foot, using his two swords to parry and cut through the dark tendrils as he made his way towards Katerea. He dodges one of them and lowers himself, raising his sword up as he uses the weak skill, {Rage Spike}.

Katerea easily blocks it with her staff and forces Y/N off. Y/N charges once more, using the skill, {Savage Fulcrum}. He swung his left sword horizontally and and shifts it, bringing the sword up, slicing through. But, Katerea had produced magic circles to counter Y/N's skill. Y/N then uses Skill Connect and follows it up with {Vorpal Strike}. Katerea blocks that as well, but is met with Y/N's foot to her stomach as she was left wide open for Y/N to attack. Y/N then spins horizontally, using a variation of the skill {Double Circular}.

Katerea dodges it narrowly as a piece of her clothing was cut along with some skin. She produces a orange-yellow magic circle and it releases a blast of incarnate snakes. Y/N dodges it, but his eyes widen as it was making it's way to someone else. It was none other than Irina. He quickly uses the skill {Vertical} to dodges forward and pushes Irina out of the way. The blast dodges the two and it instead makes it's way towards Azazel, who was in a Balance Breaker form similar to Issei's and Vali's, which slices off his arm.

Y/N then notices that Gasper's magic had cleared, causing everyone who didn't have powerful magic that didn't stack up with the Satans to move freely again.

Y/N: You alright?

Irina: (blushes) Y-Yes...

Klein: Y/N! What's going on!

Y/N turns his attention to Klein's group who was running towards him.

Y/N: Klein, someone decided to attack us while we were holding a peace conference!

Klein: Anything we can do to help?

Y/N: Just take care of those who are trying to interrupt my battle with Katerea. She's mine.

Klein: You got it!

Klein and his friends take off to join the battle. Y/N gets up but feels Irina tug on his coat sleeve.

Irina: Y/N, about what happened that day. I'm--

Y/N: Not now. After the fight.

Irina lets go of Y/N's sleeve and the black haired boy charges at the descendant of the original Leviathan. The same girl produces even more orange colored magic circles, firing more incarnate snakes. Y/N readies his two blades, using the skill {End Revolver}, swinging his right sword in a circle spin with the final strike being a sideways slash with his left sword. He uses Skill Connect, using his right sword to use the skill {Slant}. Katerea uses her staff and knocks the left sword out of Y/N's hand after she dodged the strike from the Night Sky Sword. She kicks Y/N back, who rolls back before standing up and charging again. four magicians come to Katerea's aid, but Y/N leaps into the air and slices through the magicians and strikes Katerea who parries the strike and sends Y/N to the wall. He embeds his sword into the wall before leaping off of it for another strike against Katerea.

After retaliating from Y/N's sword, Katerea sends him back and prepares for another magic circle attack. Y/N points the Night Sky Sword in Katerea's direction and it glows purple.

Y/N: Enhance Armament!

A purple magic circle surrounds Y/N's blade and it turns into a dark matter-like tendril. He sends it's way towards Katerea, who also releases the magic circle and an incarnate of snakes collide with Y/N's Enhance Armament.

It explodes and Katerea flinches. She opens here eyes only to be met with a charging Y/N, who's sword was red as he was using the Sword Skill {Vorpal Strike}.

The blade pierces though her chest, causing her to cough up blood onto Y/N's sword. Her life begins to fade as she looks up at Y/N, gazing into his cold and stern eyes as he kept his angered face.

(A/N): Originally Katerea goes up against Azazel, but this is my story so I made the choice of Y/N going up against her.

Katerea: This is not...the end...

Y/N: Ie...owaridesu...

The Black Swordsman removes his sword from Katerea, who falls back lifeless. He flicks the blood off and sheathes it on his back. He heard someone collapse behind him. Turning around, he's met with Irina who was on her knees and was crying.

Irina: I'm sorry...I should stay away, right?

Y/N: Irina...

She continues to cry her eyes out until Y/N does the unexpected. He got onto the same level as her and he grabbed her by the arm, pulling her in and he planted his lips onto hers.

She was shocked at first. She tried to get away only for Y/N to keep her in place. She couldn't resist as she accepts the kiss, sinking into it and doesn't pull away.

Y/N releases the kiss a few seconds later and puts his head on Irina's chest. She blushes upon the contact, but she relaxes and smiles, patting Y/N's head.

Y/N: Irina...my life belongs to you.

Irina: And mine belongs to you.

Y/N: I will do anything to keep you from harm. To keep you safe.

Irina: I'm sorry for that day. I--

He shuts her off with another kiss, but it was shorter than the last. He only smiles warmly at her before she smiles as well.

They were interrupted by a loud explosion as they turned to the culprit. It was none other than Vali as he sent a magical attack towards Azazel.

Azazel: What's the meaning of this, Vali?

Vali: Forgive me, Azazel. This side seemed more interesting.

Issei: Vali! So you were the one who betrayed us!?

Azazel: Hey Vali. I want to ask you something. (flies up)

Vali: Hmm?

Azazel: Shemhazai, my governor, noticed that rebels from the three great factions were banding together. The "Khaos Brigade," was it?

Sirzechs: Khaos Brigade?

Y/N: (walks up to leaders) A branch full of rebels from the three great factions. It is led by Ophis. She offered me to join but I declined.

Sirzechs: The Infinite Dragon God?

Y/N: That is correct.

Rias: Ophis!?

Issei: A dragon?

Rias: The Infinite Dragon God. Feared by even God himself, he's the greatest dragon of all.

Y/N: It's actually a she.

Vali: Indeed, I am working with Ophis, but neither of us want to rule the world. Some idiots came after us for our power.

Azazel: That explains a thing or two. I thought you'd gotten all buddy-buddy with Katerea because neither of you could become Satan.

Serafall: Neither of you!?

Y/N: It's exactly as it sounds mother. Vali is a descendant of the original Lucifer.

Vali: Correct as always Y/N. My name is Vali Lucifer.

Sirzechs: What!?

Issei: (shocked) Lucifer!?

Rias: He can't be!?

Vali: As Y/N said, I am a descendant of a previous Satan. Sired by the son of a pure-blooded Satan, and birthed by a human mother, I'm a half-Devil.

Y/N: That explains how he's able to house the Vanishing Dragon.

Irina: (eye twitches) Umm...Y/N?

Y/N: Yes...?

Irina: Could you please remove your hand off my breast?

Y/N looks and indeed sees that his hand was on Irina's breast as he had his arm wrapped around her. He quickly lets go and blushes madly, standing by his mother.

Y/N: S-Sorry...

Irina: (sighs and smiles) It's alright.

Vali reveals his ten black Devil wings. He was indeed the most powerful White Dragon Emperor in history.

Vali: Issei Hyoudou, fate is a cruel thing, is it not?

Issei: What?

Vali: With the power of a Satan and a Dragon, I am the mightiest being of all. Meanwhile, you are a mere human. Until you were reborn as a Devil, you were nothing more than an average high school boy. That is to say, without your Boosted Gear, you are nothing. So pitiful...so laughably pitiful! Our sacred gears are fated enemies, and yet our abilities are world's apart. No, too many worlds apart.

(A/N): Vali is right though. The High School DxD story would never happen if Issei never possessed Ddraig. Talk about dumb luck, am I right?

Issei: What of it!?

Vali: Y/N would have made a more worthy rival should he possess the Boosted Gear. I know! How does this sound? You devote yourself to revenge...after I kill your parents. (Issei's eyes widen) If a man like me were to kill your parents, you ought to be willing to face your fate. I'm sure it will be a much more exciting end for your parents than letting their lives slowly peter out. It's brilliant!

Asia: That's too cruel!

Rias: (worried) Issei...

Issei: I'm going to kill this asshole...

Rias: Issei!

Issei: What have my parent's lives got to do with your goddamn ego!?

The band that rested on Issei's arm, which controlled his power, shatters, allowing him to go into Welsh Dragon, Overbooster. He unleashes his Balance Breaker due to his rage.

Issei: You will never kill my parents, you son of a bitch!

Rias: A Balance Breaker!?

Vali: Look, Albion. Issei Hyoudou's power just grew exponentially.

Albion: A sacred gear's strength comes from it's wielder's will. He's consumed blind rage with against you. Rage, of all feelings, is the most effective in powering a Dragon.

Vali: If that's the case, he's a more suitable host for a Dragon than I.

Issei: Shut your damn mouth already! Ascalon!

Issei engages his blade form, the Holy Sword Ascalon emerges and they both charge as Issei swings the sword with Vali dodging in order to not get damaged.

Rias tries to run towards to help, but Sirzechs shakes his head. Should she continue, she would burn as their auras have burned past their limits. The two continue to clash with each other as Vali is simply doing this for sake of his enjoyment. After they clashed for awhile, Issei manages to stab Ascalon into Vali, transferring his power in order to overload his wings. Issei lands a hit on Vali's armor, making it shatter.

A dark blue orb falls as Vali retreats on the ground, clutching his chest in pain. Issei then makes the drastic decision of absorbing the damaged orb into his own gauntlet. It causes his left arm extreme pain, but Issei bears through it. A bright green and blue light flashes and it soon fades, revealing that Issei had done the impossible of absorbing the White Dragon Emperor's power as one of his gauntlets was white with a blue gem.

Vali decided it was time to show his true power so he flew into the air and activated Half Dimension. Space starts to bend. Azazel then explains that Vali's sacred gear halves things. Thanks to Issei falling to perverted things, Azazel specifically states that Vali will also halve Rias's breasts. Issei then falls into a small despair which causes his power to sky rocket. Y/N and the others sweat drop at Issei's perverted nature.

His power boosts a million times that it causes so much destruction to the school that it starts to crumble. They charge at each other and Vali flees from the perverted dragon user. With each strike, Issei dedicates to the boobs of his comrades. Vali was about to prepare for his ultimate technique. One that Y/N knows all too well.

Y/N: Oh no...Issei! Get out of there!

Irina: Why!? What's wrong!?

Y/N: Vali's going to do Juggernaut Drive! It'll kill him!

The barrier that surrounded the school then shatters, revealing to be a monkey man who shattered it. Y/N knew who this was as he did a few contracts with him when doing jobs for the Khaos Brigade.

Vali: Bikou? What brings you here?

Bikou: They want you back 'cuz we're gonna fight the Aesir up north. Oh, hey Y/N!

Y/N: G-Good day to you, Bikou.

Vali: I see. It's already time for that?

Issei: Who the hell are you!? Where'd you come from!?

Azazel: He's a descendant of the Victorious Fighting Buddha.

Issei: Who?

Azazel: Simply put, he's Son Goku, the famous monkey from "Journey to the West."

Issei: Son Goku!?

Azazel: I didn't expect you to be part of the Khaos Brigade. This is real crazy. Well, the White Dragon Emperor and Son Goku...kind of work as a duo.

Bikou: Would have been a trio if Y/N was with us. Did you really have to reject her offer, Y/N?

Y/N: Her offer meant nothing to me.

Bikou: (cackles cheerfully) Well, I ain't like the first one! I do what ever I want! Nice to meet'cha, Red Dragon Emperor. (twirls staff around before slamming it into ground)

Vali: Our next battle shall be even fiercer...and us, even stronger.

Issei: You're not getting away!

Issei tries to go after Vali, but his armor deactivates and he collapses to the ground. Vali and Bikou then disappear below the ground, transporting themselves elsewhere.

Irina: (grasps Y/N's hand) I'm sorry for that day...

Y/N: That wasn't you're fault. You--

Serafall: (gets between the two) So you were the one who broke my son'e heart? 

Y/N: Mom, it's fine now.

Serafall: Hmm...as long as you don't break his heart we'll be fine.

Irina: Y-Yes ma'am.

At the end of the day, new friendships formed. Irina and Y/N were truly happy, grasping both their hands as they smiled at each other. Irina would have to head back to Europe, but Michael had given Irina enough time to spend time with Y/N. For the next two days, the two would bond with each other.

Timeskip-Next Day, ORC Building

Azazel: So there you have it. Starting today, I will be the Occult Research Club's official advisor.

Rias: What in the world is going on?

Azazel: I asked Sirzechs about it, and he told me to talk to Serafall's little sister.

Issei: Her!?

Sona: If I didn't, my sister threatened--er, begged to come here.

Rias: You basically sold us our, didn't you?

Y/N: I wouldn't say sold out. It's just mom can be...a real handful...? Yeah...that's it.

Sona: (adjusts glasses) Nephew, everyone, I wish you the best of luck. (leaves room)

Rias: Hey, Sona!

Issei: Uh...where'd that arm come from?

Azazel: This? I made it while I was researching sacred gears. It's a multi-purpose arm. (arm starts to cycle though uses) I've always wanted to use one of these things. (fires rocket arm variation)

Y/N: (whistles in approval) Huh...neat.

Azazel: But in exchange for letting me stay at this academy, Sirzechs gave me one condition.

Gasper: (peeks head out of box) A condition?

Azazel: To properly train your underdeveloped sacred gears. (chuckles) The Boosted Gear with unfathomable potential, a Holy Demonic Sword, Forbidden Balor View, and Y/N's "God Mode" as they have called it...I'll apply what I've learnt in my research to bring each of you to your full potential. Listen up. You're going to call me "Azazel-sensei" from now on.

Issei: (rubs back of head) Azazel-sensei? That just feels wrong.

Azazel: Well that's about it. Best of luck.

Rias: Best of luck!? I haven't approved of--

Azazel: Oh right. Sirzechs had a message for you.

Rias: He did!?

Azazel: When he stayed at the Red Dragon Emperor's house, he realized how important it was for a master to be close to their family. Especially you, Red Dragon Emperor. Your power depends on it, after all.

Issei: Uh, I'm not following.

Y/N: Please don't tell me...

Azazel: Yup! This is an order from Satan Sirzechs Lucifer! All the women of the Occult Research Club are to live with Issei Hyoudou! That's it.

Rias: Huh!?

Issei: What!?

Scene Change-Next Morning, Hyoudou Residence

Akeno: Issei-kun, Akeno is here now, by your side! (hugs Issei)

Issei: A-Akeno-san!

Xenovia: I suppose I should stay in Asia's room.

Koneko: Hello Y/N-senpai.

Y/N: Hi...? I guess?

Koneko: Issei-senpai.

Issei: Yes?

Koneko: Peek into my room or steal my underwear, I'll beat you.

Y/N: Call me if he does. I can't miss the show.

Issei: Y/N! Your supposed to back me up!

Y/N: (shrugs) But her side is the winning one.

Asia: B-Buchou...

Rias: W-Well, they are my brother's orders. What can we do?

Y/N: I should have stayed in my apartment complex.

Rias: I know. We'll ask my brother to expand this house!

Issei: What!?

Y/N: ...Come again?

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And with that, season 2 is over! I hope you all enjoyed it as season 3 will begin soon and your relationship with Irina is just starting. Again, I hope you all enjoyed it and wait for the next one. Two OVA will be released before the start of season 3. Stay safe out there.

-okami