(Camp)
The Fairy tail mages were camped some ways away from the guild hall. Now that Zeref's forces had overtaken it, it was too dangerous to head towards without any backup. Everyone was sleeping soundly in their tents when Jacob Lessio of the Spriggan 12 came to their camp sight hidden by his stealth magic. He got inside Natsu's tent and lowered his stealth magic temporarily. This caused Natsu to wake up after picking up on his sent, then try to attack him. "Fire Dragon's Roar!" Before the fire could make contact however, Jacob used his transport magic to put Natsu in his pocket dimension. However, Natsu's failed Fire Dragon's Roar was still loud enough to wake up his fellow guild members. They came outside their tents just in time to catch the sight of Jacob leaving Natsu's tent. Before they could attack him though, Jacob reactivated his stealth magic and ran for it while everyone shot at midair trying to get him. Lucy looked inside Natsu's tent and found it empty. "Guys! He took Natsu!" She screamed.
"What?!" Gray said before he attempted to run after them.
"Gray stop!" Erza commanded as she restrained him by grabbing a hold of his wrist.
Gray turned to her. "What do you think you're doing?! That bastard has Natsu!" He screamed.
"Aye! We need to go after him!" Happy agreed.
"And how will you getting caught help the situation?" Erza countered. "He can't be seen nor heard and your plan is what? To shoot at thin air until you hit something?"
"But Erza-" Gray started but stopped when he saw the tears in her eyes.
"It pains me as well to do this but with just the four of us, Zeref's forces will tear us apart." Though she was crying, Erza's voice did not lose it's demanding tone.
Gray finally submitted and tried to comfort the crying Erza. "Don't worry. We'll get him back as soon as we can." He said to soothe her.
(Fairy Tail Guild Hall)
Jacob walked in to find Zeref and the other members of the Spriggan 12 waiting for him.
"Did you get him?" Zeref asked in his usual calm tone.
"Yes. He is still in my dimension." Jacob informed.
"Well done. Follow me." Zeref ordered. They went down to the lower levels that once held Mavis's body. In the place of the First Master's petrified body, two altars were in it's place. One had cuffs on them for someone's arms and legs while the other kept shattered pieces of the crystal that once held the body of Mavis. Jacob walked to the one that had the cuffs and transported Natsu to it with his arms and legs restrained by the cuffs. Natsu turned his head back and forth to look around when his eyes landed on his older brother. "Zeref!" He screamed while fighting against the restraints.
"That will be all. You may leave." Zeref said to Jacob. With that order from his Emperor, Jacob left the brothers alone.
"If this is about the 'I'm your long lost brother' crap, don't bother. I still don't believe you." Natsu said as Zeref walked over to the opposite altar. Then a puff of smoke came from Zeref's hand and the Book of E.N.D. materialized in his hand. "You don't have to." Zeref said placing the book on top off the crystals. "In a few moments, you'll remember it all on your own." He said walking upstairs.
"Come back here and let me out! Zeref!" Natsu called but was ignored. Then the Book of E.N.D. began to glow. A red light transferred from it to the crystals. Then the book snapped open and the pages flew from cover to cover. Then a black light came out of it and headed towards Natsu. The light completely covered him and he felt a world of pain unlike anything he had ever experienced. The pain caused him to black out as the light continued to pour into him.
(Later at the Camp)
When the rest of Fairy Tail arrived, Team Natsu was burdened with telling them what became of Natsu.
"What do you mean Natsu's gone?!" Romeo shouted. "How could you let this happen?"
"Romeo, calm down." Macao said.
Gray sighed. "It's fine. We deserve it and worse." He admitted
"But now that reinforcements have arrived we can rescue Natsu and defeat Alvarez once and for all!" Erza announced followed by the cheers of every Fairy Tail member. Lucy still had a concerned look on her face which Gray picked up on.
"Lucy, what's wrong?"
"I just don't understand." She said. "What would Zeref want with Natsu?"
Happy looked guilty before gulping down the lump that had formed in his throat. This had to be about what Zeref's proclamation about his relation to Natsu. "Guys. There's something I need to tell you." Happy said.
(Guild Hall)
The Spriggan 12 were all lined up for Zeref's orders. "Irene I want you to stay here and continue to work on Fairy Heart. August you will stay as well. Irene cannot defend herself while extracting that magic power. You'll be in charge of defending her. The rest of you, if I know Fairy Tail and I do, they will come to save their friend soon. Go outside to intercept them."
"Yes Emperor." They said. Ten of them went outside while Irene, who was followed by August, went to the basement of Guild where Mavis's unconscious form waited.
Once they were all out of the room, an unfamiliar voice called out. "Wow, I knew you were bossy with me. But I didn't think you were so demanding with Humans."
"Ah, so the transference is complete I see." Zeref said back.
Then the figure stepped into the light. It was Natsu, or at least his body. It was E.N.D. who was in control. His hair was not as spiky and it was jet black. He also had two obsidian curved horns coming from a little above his forehead which pointed to the back of his head. There was also had a set of pointed ears and blood red eyes. He wore black armor that had an orange Tartarus Guild mark imprinted on the chest plate. "So is this the usual drill? You'd like me to kill you?" He asked. His voice was distorted. It was Natsu's voice overlapping with something much deeper which could never be mistaken for Human.
"No. My desires have changed since last you were awakened." Zeref said.
"Is that so? What would you like me to do then? As you know, I live to serve." E.N.D. said bowing.
"Tell me. Do you retain all the memories that Natsu has?" Zeref asked.
"Yes. Why do you ask?"
"Your old Guild mates. When they arrive I want you to slaughter them." Zeref ordered.
Then E.N.D. got up from from his bow. "Of course Lord Zeref. Once they arrive I'll send them to Hell."
I just started writing like on this site like a month ago so please keep an open mind. Thanks for reading and I'll catch ya next time. :)