Ultimate Highschool DxD

(A/N: I am back with this fanfic. Change of plans, I'll be writing both this fanfic as well as my otejr fanfic called "The Bloody Emissary of Justice". I stopped halfway, but I've decided to at least end the story instead of just dropping it in the middle. Be sure to give power stones to both of my fanfics. Are you ready for some action? Then let's get stared!!!)

The moment Jörmungandr attacks attacked dIssei with his extremely powerful and corrosive venom, some of the venom directly harmed him while the remaining immediately entered Issei's body through his orifices as it threatened to destroy him from the inside and outside at the same time.

Issei could feel his blood becoming hotter than molten lava as he felt an incredible pain in his c.h.e.s.t. It was as if his heart was being melted and that was actually happening as the poison started to corrode his heart. His entire body was on the verge of being destroyed due to the extremely pitent and corrosive venom of the Midgard Serpent. He fell to his knees and started coughing out mouthfuls of blood from his mouth.

But suddenly something unexpected happened. Deep within Issei's body, within his soul, the 84 spheres revolving around his spiritual core started acting violently as they began bumping against the powerful abrteir around his spiritual core. Suddenly the barrier shattered but instead of the crimson sphere containing the Demonic Power of Extinction entering his spiritual core, another sphere managed to enter it.

A bright orange colored sphere managed to enter Issei's spiritual core and immediately afterwards his spiritual core shone with a rainbow light as all the other spheres calmed down and a new barrier appeared around his spiritual core. All the spheres except the gray sphere began rotating sound Issei's spiritual core along with the blood crimson sphere which was rotating around the spiritual closer while being closer than the other rotating spheres.

After the spheres calmed down, the rainbow light was replaced with a bright orange light containing a new Demonic Power. Immediately afterwards Issei's body erupted with a bright orange aura as his entire body became envelope din bright orange flames. Afterwards all of Issei's injuries began healing at a visible rate as his corroded body and damaged skin immediately repaired back to normal.

All of his internal organs as well as his heart were instantly healed after being enveloped in flames as the corrosive venom inside who's bloodstream and the itwnr parts of his body became detoxified.

Issei's body erupted in flames as he began floating in the air. The ground he was standing on before completely melted away as flames enveloped the entire region. Even Jörmungandr was shocked by the flames. The flames were very hot and powerful. Jörmungandr lifted it's eyes upwards and looked at the bearer of these flames with apprehension and gear in it's eyes.

Currently Issei's body was engulfed in powerful flames and he looked just like an avatar of the Sun itself. His light brown hair adopted a far more lighter complexion and his air became blonde while his skin tone became paler. When he opened his eyes, they took on a light shade of blue like blue stars in the night sky.

Issei's yellow hair magnificently flowed with his the flames surrounding his body took on the form of twelve flaming wings on his back. Issei's incredibly handsome face along with his blonde hair and light blue eyes accompanied by the twelve flaming wings on his bacj gave him a feeling of majesty and magnificence. His appearance was that of the Flaming Legendary Beast, the Phoenix.

Issei's current bloodline was that of Demonic Power of Phoenix, but unlike the Phoenix Family of the Underworld whose bloodline was tainted due to being demonic, Issei didn't have that problem. His current bloodline was that of a true Phoenix. The Legendary Immortal Bird whose flames were as much soothing as they were deadly.

Isseo had transformed into Aerus, but now instead dog being Aerus Gremory, he was Aerus Phoenix. Aerus's pupils had become slits after transforming into the Phoenix Bloodline as he turned his eyes towards the huge serpent that was before him. Then without waiting to give it any time to act, Aerus pointed one hand at Jörmungandr.

Immediately afterwards flames burst from his hand as they went straight at Jörmungandr. Jörmungandr was unable to dodge the flames as it relates a feral cry due to it's body being covered in flames as it's skin started charring black. Afterwards the flames on his body as wells as his wings began receding.

He had deactivated his Phoenix Bloodline as his hair and eyes reverted back to their light brown as his skin reverted back to it's normal fair complexion. Aerus had transformed back into Issei. Then using Jörmungandr's current distraction to his advantage, Issei closed his eyes as a bluish white aura engulfed his body.

When he opened his eyes, they took on a strange coloration that was a combination of dark blue and white. Afterwards the chilling and cold aura surrounding his body materializes a three-meter tall doll made of ice taking the form of a woman in a dress. This is the Longinus, Absolute Demise, otherwise known as Eternal Ice Princess.

"Freeze him." The moment Issei said that the giant doll began manipulating ice on a massive scale as in the next instant, Jörmungandr had been completely freezed in ice. Under normal circ.u.mstances, this wouldn't have been able to freeze him, but to Aerus's Phoenix flames, Jörmungandr had been highly injured and drastically weaakned as a result Issei was able to freeze him.

He could have also freezed Jörmungandr, if he made use of Absolute Demise's Balance Breaker. But in his current state, Jörmungandr would have been killed by that and at his full power, Jörmungandr would definitely have been freezed and greatly, but he would have managed to break out of the ice after a while. Deciding to focus on more pressing matters, Absolute Demise vanished into thin air as Issei looked at the huge serpent in front of him, frozen stiff in ice....