Ultimate Highschool DxD

A huge Norse magic circle appeared above the ground, in the middle of the battlefield. From the magic circle, a large with ash grey fur emerged. It was over 10 metres tall and it had two big yellow horns coming out of it's shoulders. It had huge fangs that are larger than an elephant's tusk and sharp claws that looked as if they could cut through anything. This was Fenrir, the first son of Loki and the Giantess Angrboda. He is also known as the God-Devouring Wolf.

His entire body was tied with several large silver chains. This is Glypnir, the chains used by Odin and the other Norse Gods to capture and seal Fenrir. When Fenrir completely emerged from the magic circle, his body was hanging by the chains.

"Fenrir, my son! It is time to unleash Ragnarök upon this world! Break there chains and stand by your father's side as we both bring Ragnarök!!"

Hearing Loki's words, Fenrir opened his golden eyes as he started biting the chains with his fangs. Immediately afterwards the chains started breaking and they shattered. Fenrir landed on the ground as he released a ear piercing howl painting his mouth to the heavens.

"Finally my dearest son is free! Fenrir, destroy these filthy devils for they have insulted your father! Kill and devour them all!"

Fenrir then looked at everyone in the battlefield. It was releasing deadly killing intent as it's eyes were filled with hostility. It then jumped high up in he air and leaped straight towards the team of Kiba, Xenovia and Irina.

"Kiba, Irina, Xenovia. Run from there! Quick!" Rias immediately shouted but it was too late as Fenrir had already landed in front of the three of them. Xenovia, Irina and Kiba used their sword strikes to attack Fenrir. But their strikes didn't even scratch it as it swing it's claws and as a result of the impact from it's claws all three of them flew into the air and landed a bit far away. Their body had three large gashes from which they were bleeding out a dangerous amount of blood! All three of them of them were in the verge of death!

Rias quickly teleported behind them and teleported away with them to a safe distance. She then used Pheonix Tears o heal the three of them.

"Everyone go away! You aren't strong enough to defeat Fenrir! Run!" Issei shouted to everyone.

"But Issei, what about you?!" asked Rias.

"Don't worry about me! Just go away with everyone else to the Gremory Palace! I promise I'll be fine!"

Rias had a look of hesitation on her face but then she shook her head as she gave him a resolve nod. She then teleported way along with everyone to the Gremory Palace. The only ones left on the battlefield now are Loki, Fenrir, Issei, Rossweisse, Vali, Bikou, Arthur and Kuroka. Issei asked her to stay because her magic would be very helpful in this situation.

"Kuroka, what are you doing here with Issei? You came here to collect your sister, bit seems like you joined her instead." said Vali.

"Several things happened." said Kuroka shrugging her shoulders.

"We'll talk about everything later. For now, focus on the fight ahead." Arthur said.

"Seems like all of your friends ran away. No matter, they will all be killed soon after all of you're killed!" said Loki.

"We'll see about that." Vali says. He then summons his Divine Dividing as he goes into Balance Breaker. He then started chanting as his aura starts surrounding him and shooting up high in the sky.

<I, who am about to awaken>

<Am the Heavenly Dragon who has taken the principles of supremacy from God>

<I envy the "Infinite" and I pursue the "Dream">

<I shall become the White Dragon of Supremacy>

<I shall take you to the limits of White Paradise.>

<Juggernaut Drive!!> [Juggernaut Drive!!]

Vali's own voice and Albion's voice overlapped on the last two words as the Scale Mail armor on Vali's body starts expanding until it becomes Gigantic with dragon like feature. The armor possesses claw-like growths on the hands and feet, as well as horns and a fanged mouth on the helmet.

A large red circle also known as Dragon's gate, appears beside Issei. From it emerged a fifteen metre long, giant Western dragon. With the exception of his lower body, specifically it's belly, the inner portions of it's long tail and legs, that are beige in color, a majority of it's body is covered in dark purple, draconic scales. It has a triangular head with yellow horns, a pair of large, keen red eyes with lavender sclera, and serrated yet sharp canine teeth. It also has claws with long sharp, yellow nails, on his hands, and large bat-like wings with rigid tips. Additionally, it wears black armored pauldrons that extend down to his arms and a loincloth decorated with metallic accessories. This was Tannin the Blaze Meteor Dragon and a former Dragon King.

"Tannin, what are you doing here?" asks Issei.

"I learned that Loki had summoned Fenrir, so Sirzechs asked me to come and help out you guys. Besides, I really want to fight it."

"Ok, then. You, Vali, Arthur and Bikou fight Fenrir from the vanguard while Rossweisse and Kuroka support you with their magical attacks. Meanwhile, I'll take care of Loki. Just a warning, but Fenrir's powers are comparable to that of a Heavenly Dragon. So, go all out and try to avoid it's fangs as much as you can."

"All right, we'll listen to what you say since it's reasonable given the situation." Arthur said.

Then he summoned Caliburn and Bikou summoned flying nimbus as both of them went to fight Fenrir. Vali and Tannin took to the sky and also charged at Fenrir. Kuroka and Rossweisse summoned several magic irclrs in the air as they started firing several Ultimate Class Level spells at Fenrir.

Issei also flew up to the sky as he flew straight towards Loki. Loki summoned several Norse magic circles as he started firing Satan Class Level spells at Issei. Several golden spatial portals appeared around Issei and from them emerged several staffs that started firing very strong magic spells at Loki as Issei used Gate of Babylon.

Both the magical attacks cancelled out each other as Issei used flame and thunder magic to covered his entire body in fore and thunder as he punched Loki in the face. The punch did some serious damage as Loki was pushed back a few metres in the air. Loki's faced was a bit burned but he didn't back down.

Issei then used Canis Lykaon to conjure several blades at the Dr time using Gate of Babylon to conjure several swords, spears and Lance's and threw all of them at Loki. Loki finally decided to show his true power to save his life.

He activated his completed divine power as he shouted "Divine Intervention!"

Immediately Loki's body was surrounded by bluish aura and his body absorbed them all as a golden barrier appeared around his body that blocked the weapons. He then created a huge magic circle in both his hands from which magical blast filled with divine power was forced at Issei.

Issei then summoned [Enkidu] from Gate of Babylon and wrapped up his body with the golden chains to protect himself. The blast collided with [Enkidu] and it tried to destroy the chains. Several cracks formed on the chains and a bit of the attack hit Issei as he got badly injured and started bleeding.

But the chains somehow managed to prevail as the blast dissipated, the chains opened up revealing an injured Issei with a hole in his right arm's elbow. He coughed up a mouthful of blood. But his eyes were filled with excitement! Even though Issei supported piece and didn't like bloodshed, he still loved to fight!

Loki laughed as he looked at Issei's condition and the others were terrified after seeing Issei's condition. Kuroka shouted out her voice filled with concern "Ise!". The others also liked at him with concern as they picked their tongues and Vali showed an expression of frustration. He didn't want his rival to die!

"Hahahaha! You're down for! Filthy mortal, now you die!!"

Loki then fired another divine blast and read it. The magical blast was radiating divine brilliance as it was heading straight at Issei, looking to destroy him! The blast collided with his body and a large explosion occured as his body got covered with smoke. Loki started laughing out loud.

"Issei!" everyone shouted. The scream was filled with concern and sadness.

"This is the price you paid for offending a God! You are now dead! Hahahaha!"

But then his laugh stopped as a look of shock appeared on his face. Everyone else was also confused looking at Loki's reaction. But when they looked at the smoke they sensed something.

When the smokescreen cleared, a man could be seen standing with his body covered in darkness. That man was Issei. His whole body was covered in shadows as he activated the Balance Breaker of Canis Lykaon and he began chanting.

<< — Behowlest the slaying of one thousand mortals >>

<< — Besingest the slaying of ten thousand goblins >>

<< — Mine name, which tis immersed in deepest darkness, tis the Imitation God traversing the Polar Night >>

<< — O ye, perishest by mine own black blade >>

<< — Fools ye art, deformed Creator Gods >>

<< — Nine Celestial Slash Dogs! >>

As Issei activated Canis Lykaon's Balance Breaker, he becomes covered in darkness and transforms into a black dog-like humanoid with six tails, while a large full-grown hound appears behind him. The large black dog had red eyes and a third eye on it's forehead with a large black demonic sword with it's edges covered in red colored runes, in it's mouth.

Everyone including Loki was shocked at this sudden transformation. Loki had dread in his eyes as he sensed a dangerous power being emanated from Issei. Everyone else was also shocked, but Vali had a large grin on his face. He couldn't wait to fight Issei! But he and the others quickly put their attention back on Fenrir as they kept fighting. Their bodies were covered in several injuries and they looked worn out. Even Tannin had several cuts on his body and even Vali with his Juggernaut Drive had several holes and cracks on his armor. He was struggling to maintain his sanity using Juggernaut Drive. But he needed to somehow manage until Issei defeated Loki.

Issei looked at Loki with his glowing red eyes as he said "It's the end of you Loki."

"D-Don't get c.o.c.ky!!"

The battle between them resumed again.