Warning this contains some spoilers if you're not up to date with the manga. Also this story was inspired from the story "Reignite" by The Sage and I suggest reading it if you haven't already ;).

There was fire and ice everywhere as the ground shook and the earth cracked. You could see two figures fighting off in the distance as another figure was watching them with horror. All three figures who were there are Fairy Tail mages, or should I say were? Since the guild had disbanded a year ago. The two people who were currently fighting were known as Gray Fullbuster and Natsu Dragneel, even though both looked really different from their usual selves.

Gray's skin seemed to be covered in black marks and his eyes held only hatred in them as he stared down at Natsu.

Natsu looked like he wasn't even human anymore as he had horns on the top of his head along with wings on his back and scales everywhere on him. His eyes had also changed a lot too, as they were normally a coal black but now they looked a demonic red.

The other figure off to the side was known as one of the only celestial mages left besides Yukino, a Sabertooth member, and her name was Lucy Heartfilia. Lucy had tears streaming down her face as she shouted at them to stop it.

Now you're probably wondering how this all started. Well you see Natsu, Lucy, and Happy went after Avatar since they're trying to gather up all of the Fairy Tail members again and they had heard Gray was there. Which turned out to be true as Gray was there trying to find out about where E.N.D was so he could destroy it. So the three of them broke in and found Gray. They were talking with him when the worst possible thing happened: Zeref showed up with a book in his hands. Gray of course went ballistic as Zeref started asking Natsu what path would he choose. Natsu looked confused before he joined in with Gray as they started attacking Zeref together, but then Zeref started reading from the book. First, it seemed like it did absolutely nothing but then Natsu started screaming as he fell down while Lucy ran up to him in concern along with Happy. And this is where everything started to go down hill.

Flashback - 1 hour ago

"Natsu!" Lucy shouted as she ran towards him along with Happy who was flying behind her looking just as concerned.

"Ahhhh!" Natsu screamed as he thrashed around and it seemed like something was starting to protrude from his head as well as his back.

Lucy skidded to a stop right in front of Natsu as she leaned down and tried to see what was wrong with him. "What did you do to him?" She shouted as she looked away from Natsu and back at Zeref.

"I didn't do anything. He's just reverting back to what he's always been." Zeref replied while dodging an ice arrow from Gray.

"Lushie is Natsu going to be okay?" Happy asked, who was sobbing and had tears and snot running down his face.

"Of course Happy, don't be ridiculous. This is Natsu we're talking about here." Lucy said as she tried to smile, while she was holding down Natsu to stop him from hurting himself.

"Yeah, Lushie." Happy hiccuped.

"Lucy, Happy get away from him now!" Gray shouted as he was trying to run towards them.

"Huh?" Lucy looked confused as she was still consoling Happy so she didn't notice that Natsu had stopped thrashing and his eyes had snapped opened.

Then Natsu tried to use his new claws to take a swipe at Lucy but before he could reach her Gray was there in front of Lucy stopping his hand.

"I won't let you hurt them E.N.D!" Gray growled.

"What are you talking about Gray? That's Natsu!" Lucy said who was currently in denial about Natsu just trying to kill her.

"Go, now!" Gray commanded.

"No! I won't leave you guys!" Lucy had some tears rolling down her face.

"Lucy, now!" Gray shouted as he started dodging attacks from Natsu.

"No!" Lucy screamed back, who was shaking her head back and forth.

"Happy, grab Lucy and take her away now!" Gray shouted at Happy who was still in shock.

"Aye, sir!" Happy said as he snapped out of his shock. Then Happy flew towards Lucy and picked her up by grabbing onto the back of her shirt.

Lucy started struggling. "No! Happy let me go I have to help Natsu!"

"No! Gray told me take you away and if Natsu knew you were in danger he would want me to do the same!" Happy said.

"But what if Natsu does completely turn into E.N.D.? I need to try to help him!" Lucy yelled.

"Natsu will be fine. After all Natsu's too strong to lose his will to some stupid demon right?" Happy looked directly at her as they flew away.

"Right, Natsu will be fine." Lucy said as she stopped struggling, but before Happy got very far a fireball shot out at them which caused Happy to drop Lucy in midair.

"Lucy!" Happy yelled as he narrowly dodged the fireball.

"Ahhh!" Lucy yelled as she hit the ground. Luckily, her and Happy hadn't been too far up, but it seemed Lucy still broke her right arm since it was bent at an odd angle.

"Lucy!" Gray shouted as he punched back the demonic Natsu.

Happy was about to zoom down to grab her before Lucy spoke up. "Don't worry Happy, I'll be fine just go and get some help."

"But Lucy you're hurt." Happy said as he was staring at her arm.

"It's fine. But Happy we need help so please go find some." Lucy pleaded.

"Okay Lucy." Happy said even though he seemed to hesitate before finally flying off.

"Lucy, I told you to run!" Gray yelled as he dodged a Fire Dragons Roar from Natsu.

"I'm not running!" Lucy shouted back, while she didn't notice that Zeref was behind her.

"It seems that he hasn't remembered his original life yet. Right now he's nothing more than a beast that can't think straight." Zeref stated as Lucy flinched at his voice.

"What's happening to him?" Lucy asked with a fierce look in her eyes that promised pain and torture.

Zeref looked at her confused. "Why do you ask when you already know?"

"Know what?" She yelled back sick and tired of not getting an answer.

"That you're friend isn't getting possessed by the demon, but that he's actually always been my strongest demon E.N.D." Zeref stated.

"Stop lying." Lucy choked out as she looked close to sobbing.

"I'm not lying." Zeref turned around and walked away as he was barely dodging the ice arrows that Gray was shooting at him, but then Natsu punched Gray and the next time Gray looked up to see where Zeref was, he was gone.

"Dang it!" Gray said as he turned around and stared at the thing that used to be Natsu.

"Well I'm sorry Natsu, but if what Zeref says is true than it seems that I have to kill you." Gray said while his eyes turned dark and the black marks on him seemed to spread even further up his body.

"What are you talking about Gray? Stop this!" Lucy shouted.

"I'm sorry Lucy, but you better stay out of this." Gray said as he stared down the demon E.N.D that used to be his rival Natsu with only hatred shining in his eyes. Apparently the demon seemed to take up his challenge as it smirked and made a come on motion like what Natsu did during the Grand Magic games when he was fighting Sting and Rogue. Then they both clashed with each other as Lucy tried to stand up to stop them but it seemed she also fractured her ankle during the fall, so all she succeeded in doing was falling back to the ground and fracturing it even further. Sadly, Lucy had also used all of her magic earlier against the other members of Avatar so she could do absolutely nothing as they fought.

Flashback Ended

After that Natsu and Gray kept fighting, while not holding anything back as it was a fight to the death. While Lucy could basically do nothing except watch as her two friends try to brutally murder each other.

"Please stop!" Lucy hiccuped as her throat was sore from all the screaming she had done since their fight had begun. It seemed the guys didn't hear her or maybe they just didn't care as Natsu tried to use a Fire Dragons Talon on Gray, but Gray blocked it with his Ice Make: Shield. The fight also seemed to go nowhere as both of them were on even ground with each other and nether of them seemed to be willing to give up soon.

Lucy pushed herself upwards as she tried to stand up again. Surprisingly she actually managed to stay up but anybody could clearly see she was in pain. Natsu and Gray were close to her again as they duked it out. Lucy started walking towards them as she tried to call out any magic that she may have had left.

Gray seemed to have the upper hand right now as he got a couple good punches in on Natsu but Gray didn't notice the smirk Natsu had. Since Gray was too busy trying to kill him, he didn't notice that Natsu used the simplest trick in the fighting book as he tripped him. Then Natsu brought his fist forward as he was trying to impale Gray, but instead of Gray he hit something else which made Natsu and Gray stare in shock.

"Natsu." Lucy choked out as she started coughing up blood since she had Natsu's fist going straight through her stomach as she stood in front of Gray.

Gray spoke up first as he stared at the giant hole right next to Lucy and stared at Lucy who was wearing a maids costume. "Lucy why did you do that?"

"Because I hate seeing my friends fight." Lucy replied while giving a weak smile.

"Lucy!" Natsu said as his eyes seemed to go back to normal along with the rest of his body, even though he was staring in horror at his arm which was coated with Lucy's blood now.

"Natsu, is that you?" Lucy asked as she looked hopeful.

Natsu didn't answer though as he was in shock. Then he stepped backwards which caused Lucy's body to slide off of it with a sickening squelch.

Meanwhile with Happy who went looking for some help.

Happy was flying as fast as he could to see if he could find anybody to help. So far he wasn't having the greatest of luck but then he spotted something in the corner of his eyes.

"Pantherlily!" An excited Happy shouted.

"Happy." Pantherlily looked surprised.

"Yeah it's me." A smiling Happy said.

"Wow, it's been awhile hasn't it?" Pantherlily said while he started thinking back on last year. "So what are you doing here anyway?"

"Oh, right. I need your help, Natsu and the others are in trouble!" Happy said as he started panicking, thinking about what could have happened while he was gone.

"Whoa, calm down Happy. What do you mean Natsu's in trouble, along with what others?" Pantherlily asked who looked really concerned.

"Zeref showed up and did something weird to Natsu and then Natsu went crazy as he started attacking Lucy, Gray, and me." Happy rushed out.

"You mean Zeref showed up?" Pantherlily asked in alarm.

"Yeah." Happy replied.

"Then I got to go get Gajeel." Pantherlily said as he sped off in the opposite direction as he yelled, "Follow me!", to Happy who was behind him.

"You're going to help Natsu and the others right?" Happy asked as he soared through the sky a little behind Pantherlily.

"Of course, but I'm going to get some help first," he replied.

Author's Note Time ;). Also I don't own Fairy Tail.

Hello everyone, this is my first Fairy Tail fanfic so I hope you enjoyed it. Thanks for reading my story so far and now I shall explain some things: now there is going to be a Natsu and Lucy pairing but it probably won't be for awhile and yes Natsu is going to travel back in time just probably either in next chapter or a couple chapters after that.

Now this fic is not going to have a main update day since I already have a main story that I'm focusing on right now. So this will be updated whenever I get another chapter done which could be tomorrow or it could be a month from now. Don't worry though I definitely have big plans for this story so it won't be abandoned forever.

Anyway please leave me a review and tell me what you think and also I love constructive criticism (just try to be nice about it) ;). Also if you can't think of anything to say or you don't have that much time just send me a smiley face if you want too.

Till next time ;).