Auron sat at the guild after the whole Edolas thing and wondered why he had been betrayed by those he worked with. As everyone scrambled to get the jobs they wanted. Erza sat at the same table as him and looked at him as he tried to figure out why.
"I was actually back here before I was forcibly sent back," Auron informed Erza.
"Hmm?" Erza said, "What for?"
"I was helping Mystogan close all the Animas," He told her, "But on the way, I met this spectacular girl. She was everything I had hoped for when I met her."
"What happened," Erza asked.
"She died protecting me from a dragon," He said, "But in her final moments, she made make a promise."
"And that is?" Erza asked.
"No matter how hopeless, however much you're outnumbered, even if your life is about to end," Auron started, with tears coming to his eyes, "No matter if the world is about to end, promise me this, promise me that you'll never back down. Promise me that you'll never be cruel, cowardly, or resort to killing those you call your friends. Promise me that you'll live on for me, cause if you do that, then know that I will always be with you in spirit. Do this, and no one will ever betray you."
"Have you kept that promise?" Erza asked.
"So far, yes," Auron said, "But I was betrayed by one I trusted enough to call my friend. Erza Knightwalker."
"Must've been hard for you," Erza reassured him, "By the way, Mystogan gave Natsu a letter to give to the master."
"And?" Auron asked.
"He's considered making an exception for one of the rules," Erza said, "You might get a straight promotion to be an S-class wizard."
"I'm gonna have to prove my worth," Auron said.
"He's already cleared you to take on a S-class mission," Erza said, "To test your skill. It's Dragon Hunting."
"Which one will I be hunting?" Auron asked.
"It's a black and blue dragon," Erza said.
Auron clenched his fists and slammed them down on the table, breaking it. He got up, but Erza stopped him.
"Where are you going?" Erza asked him.
"To get revenge," Auron said, then walked towards the bar counter.
"Hey Auron! How may I help you?" Mirajane asked.
"I was cleared for a S-class mission in order to test my skills, I want to do it now," Auron told her.
"Okay, you're free to go!" Mirajane said with a smile.
Auron stormed out of the guild building just as Natsu walked past him.
"What's up with him?" Natsu asked Gray.
"Something about revenge," Gray told Natsu, "He's apparently going to hunt a Dragon."
"Which one?" Natsu suddenly asked.
"A Black and Blue dragon," Erza said, walking up, "Don't you two have missions to do?"
"Oh! Right!" Natsu and Gray said at the same time.
Auron looked down at an open locket of a girl wearing the Inferno armor that was part of his magic. He closed the locket and looked at his destination.
"Don't worry," Auron said, "I'll get revenge for you by using your Knight magic. It has served me well up to this point, I haven't even had to use my own magic once. Thank you, Mitsuya Onyx, for everything."
Auron jumped down the ledge and walked into the small town that issued the job.
"Hello?" Auron called out, "I'm here about the job!"
People started coming out of the buildings and looking at me.
"Who's he?" One of them asked.
"Look! He has the Fairy Tail guild seal!" Another said, "He's a wizard!"
"And He's a Nightfall!" A child said, "We may have hope after all!"
The village elder walked out and came up to me.
"It's such an honor to have you in our village, Nightfall," The elder said.
"I'm here about the dragon," Auron told the elder.
"Ah yes," The elder said, "Bahumat the destroyer. He's been ravaging the countryside for months now! We went to other guilds for help, but none of them were able to finish even though they sent their strongest member. We finally went to seek out help from Fairy Tail two months ago, and we were losing hope of anyone ever coming out to help us."
"Where's the dragon now?" Auron asked.
"Probably to the west of here, ravaging the fields we use to produce our village's food," The elder told him, "If you go quickly, you can catch him!"
Auron walked out to the west of the village, heading with the intention of getting revenge for Mitsuya. He was surprised as to how close it was to the village.
"Surprised the dragon hasn't gotten to the village yet," Auron mumbled.
A dragon screech rung through the air and Auron grinned. Bahumat flew out from behind one of the mountains.
"Found you," Auron said, "Now come to die."
Bahumat looked at Auron and landed in front of him.
"I remember you, little scared boy," Bahumat said, "The one who hasn't found out what he really is. Have you found out yet?"
"All I know is that you need to die," Auron said, "Knight magic! Inferno Armor!"
"That magic," Bahumat said, "That's the same magic the scarred me all those years ago."
"But this time, it gonna kill you," Auron told the dragon.
"We'll see about that," The dragon said, then slashed at Auron.
"Inferno Armor!" Auron said, "Double sided fire claw slash!"
Auron started to slash at the dragon with quick speed, landing every hit. But eventually the dragon countered with a quick claw attack.
"Fine!" Auron shouted, "Knight magic! Odin's gift!"
An armor set made out of the strongest metal appeared around Auron and a magic cannon appeared in his hands.
"Odin's gift!" Auron shouted, "Decimate!"
A large magic beam shot from, engulfing the dragon and putting it in critical condition. The dragon layer on the ground, dying and looked at Auron.
"You've yet to realize you purpose," The dragon said, "Son of Nightanum. Do you remember the day that you were abandoned? Dragon-,"
The dragon had died without finishing the sentence, and disappear into the air.
Auron walked in the guild a week after he completed the mission. He sat down at a table and pondered. Erza noticed him and walked up to him.
"How did the mission go?" Erza asked.
"July, 7th, 777," Auron said.
"Huh?" Wendy said, turning around.
"What about it?" Erza asked.
"That was the day I was abandoned by the dragon that raised me after my parents died," Auron explained.
"You were raised by a Dragon?" Natsu asked, "What type of Dragon Slayer magic can you use?"
"I don't know," Auron told Natsu, "I was told to never use it, even if my life depended on it. His name was Nightanum."
"The Nightmare Dragon?!" Gajeel asked surprised.
"Cool!" Natsu said, "But why can't you use the magic?"
"Because it will eat me from the inside," Auron said, "At my skill level anyway."
"So you're gonna get stronger so you can use it?" Natsu asked.
"Not so I can use it," Auron said, "So I can protect those I love, because no matter who you are, if I consider you a friend I will protect you no matter the situation."
"Auron!" The guild master said, "Come speak with me at once!"
Auron walked over towards Master Makarov and sat down.
"You've completed you're mission, correct?" Makarov asked.
"Yes I have master," Auron told him.
"Then I want you to help me look over the S-class trials," Makarov said, "Then I will allow you to bee an S-class wizard, as this will help you understand what being one is all about."
"I accept, and will help you all I can," Auron said.
Just then I saw everyone heading towards the dock to go to the sacred island. I got up and followed them to the ship. When everyone got to the ship and got on, that was when I got on the ship.
"Auron!" Natsu yelled, "What are you doing on the ship?"
"Right now that's none of your business," Auron told Natsu, "All you need to know is that I'm also going to the island."
Auron entered the area of Mavis' grave to Master Makarov sitting down there. He walked over to him and joined in sitting down, looking out towards the clouds in the sky.
"What seems to be bothering you?" Makarov asked him.
"It's just," Auron told him, "I'm getting a really bad vibe from the sky today. It happened after the first round was completed."
"I'm sure it's just your imagination," Makarov told him.
They both sat there being quiet for a couple of seconds and Auron spoke up.
"Probably," He said.
Just then a red flare shot up into the sky. Auron looked up and saw it.
"Master!" Auron shouted.
"I see it," Makarov said, "Go help the others."
Auron shot off through the bushes and weaved his way towards the location of the flare. Along the way he was stopped by a monster.
"I don't have time for you," He said, "Knight magic! Armor of Zeus!"
Auron jumped forwards and sliced the monsters head off, then continued running. He soon made to the location of which the flare was fired to see Erza and Juvia.
"Erza! Juvia!" Auron shouted, "Where's the enemy?"
"Right now they're on their way here," Erza said, "And what are you wearing?"
"It's the Armor of Zeus," Auron told her.
Auron dashed off to find the others, and found levy carrying Gajeel.
"Levy!" Auron said, "Do you need any help with that?"
"No," Levy told him, "I'm fine on my own."
"I need to find Wendy and That Mest guy," Auron said, "Armor magic! Armor of the messenger!"
A super light armor with winged boots formed around Auron and rushed off at increasing speeds. He stopped at the intersection of a couple of rivers and saw a man sitting by the trunk of one of the trees.
"Excuse me sir!" Auron shouted to him, "I seem to have lost my way! Can you tell me which way it is to the beach?"
The man just sat there and stared at Auron with wide eyes. Auron rolled his eyes and ran off again.
"That man...," The person said, "Has the soul of a Dragon in him, wanting to get out."
Auron was still rushing through the trees when he came to a clearing in the forest. He stopped for a breath as someone flew overhead and dropped orange balls over the island. A dozen of them landed by where Auron was and enemies came out of them.
"The enemy is already here?" Auron asked himself as they closed in.
Auron stood up and pointed his finger towards them.
"Hey you!" He said to the enemies, "I don't know what guild you're from, and frankly I don't care. But what I do know is that you've picked a fight with Fairy Tail, and when you do that, you get to experience the worst pain possible."
"Who the hell is this guy?" One of them asked, "How doesn't he know about Grimore Heart?"
"Cut the chat," Auron said, "It's pain time, and you guys the guests of honor!"
"Look at his neck!" Another one of them said, "He's a Nightfall!"
"Knight magic!" Auron yelled, "Armor of the Dragoon!"
A powerful armor formed around Auron as he lifted up into the air. When it finished, he was set on the ground and opened his eyes.
"Dragoon Armor!" Auron said, "Fires of Ragnarok!"
Auron lifted up in the air and shot a ball of fire down on the enemy wizards. The fire engulfed them and absorbed them into magic magic energy, which was them transferred to Auron. Auron fell to the ground and held his head.
"Oh, I shouldn't have done that," He said to himself, "It feels like my head is about to burst. That was a bit too much magic power to take in. I should be more careful, cause I could waken the power inside me. Why am I talking to myself? Why am I still here?"
Just then someone landed on the ground behind him. He sighed and let his hand fall to the ground.
"Or maybe I'll find you first and kill you," A woman's voice said.
"That voice," Auron turned around to see Moa Godstriker, "You."
"I could say the same thing," Moa said, "Dragon boy."
"Knight Magic!" Auron said, "Sinstriker armor!"
"Oh," Moa said, "You've gotten stronger."
"What doesn't kill me makes me stronger," Aruon told her, "Sinstriker Armor! Double blast!"
Auron held up his hand and. Fired two quick beams at here, but they did nothing to her.
"You're gonna have to do better than that," Moa said, "Child."
"I am not a child," Auron said, Furiated, "DONT CALL ME A CHILD."
"Someone woke up on the wrong side of the bed this morning," She said.
"You killed my friends, my family, my old master, and worst of all," Auron said, with magic energy flowing from the ground into him, "You now dare to kill my new guild. Well I won't allow that, because I'm a Fairy Tail Wizard! And I will defeat you this time! I made a promise to someone I loved a long time ago, that I would protect those I called my friend and that I would never back down, even if the cost was dying."
"What... What's happening?" Moa asked, looking scared.
An explosion went off and someone landed next to Moa.
"I'll assist!" He said.
"You sure took your sweet time getting here," Moa told the the man that just arrived.
"What?" The man said, "They were having a sale on the new Gajeel figure. They just added his cat."
Moa gave him a death stare.
"What's wrong with getting one?" The man said, "I was the first one that purchased it, so I got the collectors edition."
"The smoke is clearing," Moa said.
The smoke from the explosion cleared, but there was now black mist flowing from Auron. He stepped out of the mist with Black eyes that had red dilated pupils, and he was covered in red and black scales.
"Scales already?!" The man asked.
"This island is infused with lots of magic power," Moa explained, "So anyone who absorbs some of it, reaches one of their most powerful forms."
"Now you've gone and woken the beast," Auron said, "Nightmare Dragon Punch!"
"Nightmare Dragon!" The man that showed up said, "The son of Nightanum is in Fairy Tail?!"
The man that uses explosion magic was hit first, and it sent him flying towards the Grimore Heart airship. Moa looked at Auron and grinned.
"I guess I'll just have to use my best magic then," She said.
"Come and try," Auron told her, "I'll be waiting."
"Heh," Moa laughed, "Come! Omega Aeon!"
"That thing again?!" Auron said, "Oh well, Nightmare Dragon Mist!"
Black mist covered the ground of the clearing and Auron dropped down into it. He slithered across the ground and came up to Omega.
"Now I've got you!" He whispered, "Nightmare Dragon Sneak attack!"
Auron shot up out of the ground with a black and red blade attached to his arm, and launched Omega high into the air.
"Impossible!" Moa shouted, "The Omega Aeon is untouchable by any wizard!"
"But I'm not any wizard," Auron said, "Nightmare Dragon Death Blast!"
Auron shot a ball of tremendous magic energy up in the air towards Omega as it started it's decent to the earth. Auron grinned as he watched the two get closer and closer. Pretty soon, they collided and released a huge explosion in the air.
"What?!" Moa asked, "H-how did you? You defeated him!"
"Never underestimate the power of any son of a God Dragon," Auron said.
"Fine! I'll take care of you with ease!" Moa yelled, "Ice magic! Flash freeze!"
Auron was quickly surrounded by ice and got trapped in it, unable to escape for the moment.
"It seems you've improved on your first magic type," Auron said with a grin, "However, all I need to do is this."
Auron pulled more magic power from the ground and broke free from the ice. He grew a tail and his teeth extended to razor sharp quality.
"What is this?" Moa trembled with fear.
"Bear witness to one of the most powerful forms a God Dragon Slayer can achieve!" Auron said, "It's capable of absorbing anything magic that hits it!"
"So this is the true magic power of God Dragon Slayer," Moa said.
"Secret Nightmare Dragon Technique!" Auron yelled, "Nightmare Reality!"
A black and red line attached itself onto Moa's head and the line started pulsing.
"What did you do?!" Moa asked.
"My secret technique in this form takes information from the victims head," Auron explained, "And it makes their worst nightmares materialize as a weapon I can use. Nightmare Dragon technique! Weaponize!"
Moa's worst nightmares appeared in front of her, and started to attack her.
"You win this time, Boy!" Moa shouted, then retreated.
Auron made his way over to the makeshift campsite, stopping momentarily to scream in pain. He finally reached the camp to find out that another tent had been made.
"Where's... A sword," Auron asked.
"Why?" Levy asked, "What's wrong?"
"The magic energy within the island," Auron explained, "They tricked me into absorb too much of it."
"There's a knife," Levy told him.
"Give it here," Auron demanded.
Levy handed Auron the knife and he thrust it into his heart.
"Auron!" Lisanna said.
Auron fell to the ground and started to bleed out, but instead of blood, magic power flowed back into the earth and the Dragon Tail and teeth disappeared.