Hello everyone. Oh right, no one's here. Anyway, here's a new thing from me. There will be some crossover elements, but if you know me already, you already knew that.

You should also look at my "The Era of E.N.D: Prologue" to get the very basic idea of what's going to happen. You can read this without it, but I figure I'll let you all know just in case you want too.

Anyway, to help you all better know what is going on, the armies of E.N.D have finally unleashed themselves upon the world, and E.N.D breaks free from his seal, taking over Natsu, and plans to wipe out the Ishgar and Alverez armies, kill Acnologia, Take Zeref to use his magic for his demonic war machine, and use Fairy heart to power up portals to other worlds. If his campaign succeeds, then Earthland will be the first planet to fall to E.N.D and the fel etherious. Can the heroes of Earthland stop him? Can they save Natsu? Or is this truly the Era of E.N.D? There's only one way to find out.

Also, I made some of the few fel etherious on my RulerofLegion Deviantart page, I mean I'll do my best to describe them here, but for a better look, go check them out, they are in the fel etherious panel. They are not perfect, since I'm not that good at art, but I think you'll get the idea. This is for those on , by the way, since I'm putting this on two sites.

Just to let you know, I'm not good with getting people's personalities, and hard to keep up and track everyone's names and magic. I'll do my best, but sorry if I screw something up.

Everything belongs to their respective owners.

Chapter one: Demons unleashed

"This is the so called Alverez Empire?"

One figure stood on a cliff overlooking the war between the Ishgar and Alvarez forces. This figure had dark green spiky like hair, wears a blue jacket with a white shirt underneath it, and wears gray shorts and simple dark green boots. He looks like a normal person, if it weren't for the spider legs sticking out of his back, and his green and red eyes as he stares at the conflict below.

"I thought Zeref would do better than this. Shame really." The figure told himself, "This will make crushing them all easier, but I was hoping for a challenge. Oh well, you get what you get."

"Spideron, are you prepared to open the portals for our ground forces to get through?" A voice ranged out in his head.

The now revealed Spideron assured his friend. "Of course I'm prepared Gan, I hope you are as well."

"Of course I'm ready. I refuse to disobey the will of Lord E.N.D." The now named Gan answered in his head. "And Vax is ready to lead the assault on the continent of Alakitasia. If what our agent there told us is true, the continent will have no defenses once the attack begins."

Spideron grunted, "Even if they had defenses, it wouldn't matter anyway."

"Don't get cocky Spideron. I refuse to fail our master due to your arrogance." Gan replied in a strict voice.

"Hah, if you're talking about arrogance, then Vax is the one you need to talk too." The demon replied back, "But don't worry, I won't screw this up. And Wrath better not either as well."

Gan agreed and assured his ally, before cutting the communication off. Spideron looks down on the war below again.

"The time has come lord E.N.D."

'ELSEWHERE'

"The time has come fellow demons!" A fel etherious shouted to the other forces on the ship.

This demon has some armor on one shoulder, on his legs, and was wearing a helmet as well. While most of his body showed human like skin, there were patches of demon skin shown, mostly on his face. He had two swords in his hands as he spoke to the forces in front of him. This demon was known as Wrath.

"Ahead of us is the land which the forces of the mortals clash with each other like wild animals. While they're too busy tearing each other apart, we will strike and destroy them like the pests they are! The time of the gods is over! The time of the dragons is over! The time of Zeref is over! And the time of mortals is over! On this day, the time of the fel etherious begins!"

The demons roared in agreement and in cheer, while Wrath formed a grin on his face.

"Begin the bombardment! For the glory of Lord E.N.D!"

'ANOTHER LOCATION'

A woman with long red hair was overlooking the fighting between the Fiore magic guilds and the two spriggan 12 members, Bradman and Rahkeid and their forces. She looked at the battle below, until a voice entered her head.

"Irene, what's the situation at your location?" Gan asked the red haired Spriggan.

"The two forces are continuing to clash at each other, with no side backing down." She spoke with a bored voice, as she continued to look at the battle. "Bradman has also begun to fight the mage known as Gajeel Redfox from the Fairy Tail guild. It's been a while Gan, is it time to make the move?"

"Correct Irene, but don't act just yet. Continue to act as the Alverez ally until told otherwise." Gan gave Irene the command.

"Yeah, yeah I know." She replied to him, as he cut off the communication.

She looked down at the battle once more, as if the conversation she had didn't happened.

'ELSEWHERE'

A figure wearing a dark brown cloak, covering himself and covering his head, was heading toward the outskirts of Hargeon Town. The only visible features of this being were his glowing green eyes and mouth that could be seen from his hood. The figure also had a staff with a grey skull on top of it with fel energy around it. This figure was the fel etherious named Gan.

He arrived on a cliff overlooking the town.

"It appears the Ishgar forces managed to retake the town." Gan told himself, as he looked out into the sea, and saw the fel ships in the distance. "The fools won't be able to survive the onslaught that's coming. Many of their strongest are either injured or elsewhere." The demon then looked down at the town once more. "There are a few here that Lord E.N.D want alive, and the one woman that is similar to Irene is here as well."

The demon then turned to walk away from the town, as he had to open the portals for their forces elsewhere.

"One by one, they will fall."

'ABOVE THE WATERS OF ALAKITASIA'

"HAH! Irene was right! There's hardly any Alverez forces here to defend this pitiful continent!"

The one who spoke this was named Vax, the demon looked like a satyr, with dark blue skin, and red colored hair that covered most of his body. He turned to his forces before speaking once more.

"Zeref made a fatal mistake bringing his entire army to Ishgar, leaving his empire ripe for the taking! Tear the mortals apart! Leave nothing but ash and destruction in your wake!" Vax shouted to his forces of the armada.

The fel etherious roared before the ships headed toward the continent. Vax shouted once more.

"THIS IS THE END OF MORTALS!"

'UNKNOWN'

Darkness surrounded him as he watched from his mortal half's eyes. He looked so happy, despite being told that he was him from Zeref. His mortal shell, alongside the blonde woman, the green haired woman, and the other Fairy Tail mage, were all heading to the Spriggan 12 member, August, in order to negotiate with him.

Why do they try so hard? No matter the outcome, they all will fall. They all unknowingly followed his plan. The plan he made so many years ago was finally finished.

Zeref. Acnologia. Fairy heart. And the feelings inside of his mortal self. They all were a part of his plan, his game, and now, they will become reality.

In this darkness, you could here his laugh, as his vision of a world ruled by him will soon be realized.

"Your time is up Natsu Dragneel…"

'ELSEWHERE'

The Ishgar forces and Alvarez forces continued to wage war on each other. No matter the injuries, casualties, and losses that they had, they continued to battle one another.

All of a sudden, a massive explosion was heard, getting the two armies to turn in the direction of the noise, and what they saw shocked them all. A massive portal, the size of a mountain, appeared in the distance not far from them. Then they saw them. Legions of demons poured through the portal, in numbers that dwarfed the two forces combined, and giant flying ships came through the portal as well. (The ships looked like the new Burning Legion space ships from the upcoming Legion expansion of WoW.) The two armies then realized that the demonic war machine was heading in their direction.

They didn't stand a chance as the demons annihilated them.

'WITH FAIRY TAIL'

"What?! What's going on?!"

These were the outcries of those in the guild as they saw large numbers of both their forces and of the Alvarez near the northern side of Ishgar disappear off the screen, but there was no sign of anything that could have showed them why.

"Why did they all disappear like that?!" Max shouted out in confusion.

Makarov was just as lost as anyone else here. "I… I don't know. Something's going on here, and I don't like it."

"Of course you mortals wouldn't like it." A ghostly voice was heard throughout the guild, getting everyone on edge.

"Who's there?!" Makarov shouted out, hoping to get an answer.

His answer came when a black ghostly creature appeared from nowhere in the middle of a guild, shocking everyone. The creature was black while it looked like it was wearing a gray suit on what they think it's its chest. It has glowing green eyes, with dark green cracks above its right eye, and below its left eye as well. It also had four floating grey hands floating next to him, each hand having a different color circle on it. Needless to say, everyone was both confused and shocked by this thing.

"What are you?!" Nab shouted at it, which it merely chuckled.

"…My name is Gast, and I'm a fel etherious. And I'm here for one thing…"

All of a sudden the shadows in the guild came to life, encasing everyone in them, making them unable to move or use their magic. Gast merely smiled a little.

"…To take Fairy heart for my master." The demon finish as it slowly moved to the entrance where Fairy heart was being kept.

"How do you know about that?! And how could you be an etherious, they were all destroyed by my children!" Makarov shouted at the demon, managing to get his mouth working again.

"…You assumed that I'm one of Zeref's creations, that is false. I am natural born; just like all of you mortals were naturally born. But my race was created by Lord E.N.D, not the fool that started the war." Gast answered the small guild master. This of course made everyone more confused.

"But isn't E.N.D with Zeref?" Kinana asked the ghost like demon from where she was being hold from one of the shadow like prisons Gast made.

Her voice caused Gast to turn his head toward her, as he was all of a sudden on front of her.

"Kinana… Lord E.N.D has taken an interest in you, along with a few others. You're coming with me."

Before she could ask him what he meant, the shadow prison she was in began to move around Gast, as he once again began to head toward fairy heart, ignoring the shouts from the other trapped members of the guild. Before disappearing, he told them one more thing.

"See what has become of your city, and you should feel honored. This world will be the first to fall to our might." As he and Kinana disappeared into the shadows, as the prisons of shadow dissipated, making everyone dropped to the floor. Before they could go after him, they heard screaming from outside the guild.

"Go check on the town, I'm going after Gast!" Makarov told them as he went to Fairy heart before Gast could.

As the other went outside, they were horrified by that they saw.

"W-What?!"

"H-How?!"

The entire city was under siege by numerous demons and the ships that hover over them. A giant demon spotted them.

"The mages! Kill them all!" It commanded, as a bunch of fel etherious charged at them.

They could only prepare their magic and charged head on into the demonic horde.

'WITH ZEREF'

"What are these things?!" An Alverez soldier exclaimed before being crushed by a huge demon.

Zeref watched from the distance as he saw these creatures that appeared from a giant portal that opened not far from here destroying his forces below. Invel had joined in the fight though Zeref knew it was only a matter of time before they'll be overrun. But these creatures appearance confused the dark wizard. Where did they come from? And why show up here of all places?

Before Zeref could think of anything else, a gust of wind blew past him. For a moment, he thought it was nothing, before he sensed a presence behind him.

"So you're the dark wizard Zeref huh? Strange, I thought you'd be taller."

Zeref turned and saw the demon Spideron behind him.

"Who are you? Are you the one who send these creatures?" Zeref asked the fel etherious.

"You even sound different than I thought you would. I figure you'd have a deeper voice too." Spideron replied to the dark wizard. "As for your questions, I am Spideron, one of the leaders of the fel etherious, the creatures you see decimating your army below."

"Etherious?" Zeref sounded surprise, before speaking again, "I didn't make these, and I don't remember making you." He finished speaking.

This causes the demon to laugh, confusing the wizard.

"You fool." Spideron spoke after calming down from laughing, "What did you think Lord E.N.D was doing when you left him alone?" He then pulled from his jacket, revealing the Book of E.N.D in his hand. This cause Zeref to widen his eyes, as he felt his robes for the book only to find it not there. "The master had created us while you were busy involving yourself in the dragon civil war. But not all of us were created, oh no. Many of the demons you see were naturally born just like the mortals of this world. But you won't have to worry, for soon you will be nothing more than another weapon for our forces."

This was all Spideron told Zeref before vanishing, bringing the book of E.N.D with him.

"…Was have you done E.N.D?" Zeref questioned himself as he saw the battle rage on.

'AT HARGEON TOWN'

You know, if Gray was mad from Zeref's armies attacking before, he was pretty darn mad now, considering he wanted to take a small break from fighting. But now some weird ships appeared and then these creatures showed up as well, attacking the town.

"Where did they come from?!" Lyon shouted as he used his ice make magic to fight back the demons.

"How should I know?!" Gray shouted back as another wave of the fel etherious charged at them.

Currently in the building where the injured were, Erza wanted to help, but was being held back by Kagura and Juvia, who stayed to watch over the injured.

"I got to go help them!" Erza protested to the others.

"Erza, you're in no condition to help them like this!" Kagura told the one she saw as a sister, who was still trying to resist.

"We must let Gray-sama and the other handle this!" Juvia told her.

Before Erza could protest further, the ground near them opened up, getting everyone in the room to see more demons coming from the hole. One of them looked into the direction of the three women mages.

"Those three there! Lord E.N.D wants them alive! But kill the rest!" It commanded the rest of the fel etherious with it.

Everyone couldn't react fast enough as they begun their attack.

Outside, a huge demon began to approach the fighting mages, but when Gray and Lyon saw it, they froze.

"I-Is that… b-but how?!" They both shouted at once.

The giant demon approaching them was none other than Deliora, the demon believe to have perish back on the Galuna Island. But it looked different than before. Not only was it bigger, it had more spikes coming out of it, and had a black and dark green color scheme to it as well. The moment it got close enough, it charge head first toward them while giving off a monstrous roar.

The two ice make mages managed to dodge its attack, but realized it wasn't done yet.

"How is it alive? It died back on the island!" Lyon shouted as he prepared his magic.

"I don't know, but I'll be sure to send it back to the grave!" Gray answered as he also began to power his magic against the giant demon, unaware what was happening in the building with the injured.

'WITH NATSU AND THE OTHERS'

"THIS IS AWESOME!" Natsu shouted as he and the other three were on the now giant Happy, who was flying to encounter August.

"How much longer until we arrived?" Lucy ask Brandish, who was simply staring ahead.

"I don't think August is that far now, so not long." Brandish replied to the blonde mage with a bored tone, while Mest still couldn't believe that Natsu let the Spriggan out.

All of a sudden though, Happy suddenly stop, then was sent crashing down into the ground, sending everyone off of the giant exceed, who turned back to normal size after crashing.

"OW! What just happened?" Lucy questioned as she got back up.

"Happy! Are you okay?" Natsu went to ask his adopted son.

"Aye sir…" Happy muffled, as his face was covered by the ground.

"Why did that happened?" Mest asked Brandish, "If this is all part of some plan-!"

"Once again, you proved that mortals can't work together without fighting one another." A voice was heard by them.

"Who's there?!" Natsu shouted, as Spideron appeared to them.

"Are those spider legs sticking out of his back?!" Lucy shouted in fear and shock.

"Who are you?" Brandish asked the demon.

Spideron simply raised his hand, as Lucy, Brandish, Happy, and Mest were all of a sudden lifted in the air by the demon's psychic abilities.

"Put them down now!" Natsu shouted at the demon, who simply turned in his direction.

"Don't worry my Lord," Spideron spoke, while bringing the book of E.N.D from his jacket, surprising Natsu and the others. "You will be free once more."

"The book of E.N.D?" Lucy said quietly, how did he get it? And why bring it here?

"What are you planning?" Natsu questioned the demon in an angry tone.

The fel etherious simply pointed the book at Natsu before speaking.

"…Saving you."

All of a sudden, the book was envelope in an unknown magic by Spideron, before it turned into a beam, hitting Natsu, making him cry out in pain.

"NATSU!" The others shouted out in worry. As Natsu continued to scream out in pain, as they noticed something happening.

Giant demonic wings came out of his back, and two giant demonic horns appeared on his head. His feet were envelope in dark green flames, before fading away revealing hooves have taken is feet's place. Green markings appeared on his body and face. All this was happening while Natsu was still screaming from the pain. The transformation also burned off his vest, and his scarf has fallen off as well.

All around Earthland, the sky turned a dark and green colored, giving off a feeling of dread to the inhabitants of the planet. But to the demons, they saw this as a sign, a sign that their master has awoken once more. With more ferocity than before, the demonic war machine continued their invasion once more.

Natsu's scream died down, as he was now breathing hard.

"Natsu! Are you alright?!" Lucy shouted out in worry.

"Shut up woman!" Spideron shouted at the celestial wizard.

"Natsu" stood up, looked at himself all around, before speaking with a demonic tone in his voice.

"Free… at last…"

This was a lot to right, the most I ever done. See you all next time(Whenever that will be).