So, I figured that this was a good story idea, but I am willing to listen. The basic rundown is that god accidentally killed some poor idiot and feels bad, so he decides to ask the kid (16 years old when the show starts) what world he wants to be reincarnated in and the one he chooses is rather dangerous (cause, ya know, it's FT). So he makes him the brother to a punch-happy pyro, gave him the HF sword Murasama, and made bladewolf his familiar. This will start just before the phantom ark, as that is when things pick up
(LINE BREAK)
Jack Crimson, a six feet tall sixteen-year-old with dirty blond spikey hair and blue eyes found himself in a room that only had a table and chairs, and an elderly man sitting in one. "Please, take a seat." The man gestures to the chair across from him, a kind and apologetic look on his face. Jack sits down and gave the man a questioning look. "I am so terribly sorry, but you are dead." The man apologized, but Jack only shrugged. "What's done is done, can't undo the past, so look at the now, that's how I live, or lived, I guess." Jack told him, causing the man to smile. "Still, I feel really bad, so, I am willing to reincarnate you into whatever world you want."
Jack had to think, this was a very rare opportunity. For a moment he thought of his family, then, where here wanted to go clicked. "Is the world of the anime 'Fairy Tail' optional?" He asked, to which god nodded, but then frowned. "Yes, but I have to drop you in during a rather dangerous time for the guild, the 'phantom ark' to be precise. You're going to want a weapon and familiar, and magic, of course." The old man recommended, and Jack got an idea that was both amazing and god-awful at the same time. An idea that could get him killed again, but could be worth it. "For a weapon and familiar, I want the HF blade Murasama and Bladewolf from metal gear rising revengeance, as for magic, well… I want to be a fire dragon slayer and brother to the one and only Natsu Dragneel." Jack said with a grin, the idea causing god to grin as well. The deity's smile is the last thing he saw before his world faded to black.
(LINE BREAK)
Jack woke up to see a clear blue sky, he found he was wearing a black t-shirt, pants, and running shoes. He sat up and saw an all too familiar town with an all too familiar building at the far end. 'Well, might as well join up immediately.' Jack internally chuckled and began his trek to the guild with Murasama on his hip. Along the way, before he got into town, he tested his magic and realized that he already understood what he is supposed to do. And he also summoned Bladewolf, who insisted in calling him "commander" for whatever reason. The odd looking sword and edgy looking robotic wolf understandably drew some looks, but they mostly went ignored. He soon found himself at the guild, and after a moment's hesitation, he opened the door…
Only to get headshot by a flying mug.
"Elfman! Watch what you are doing! You just hit this poor kid in the head!" Jack suddenly finds himself being hugged by the woman known as Mirajane or Mira for short. She was currently giving her younger brother a glare that instantly stopped whatever fight that was happening, Natsu, Lucy, Grey, and Erza are nowhere to be seen, so they must be on the quest that kept them away when Gajeel wrecked the place. "Does not compute" Bladewolf finally said something, Jack only chuckled. "So young man, why are you here?" a short man that Jack knows is Makarov, and he also knows that Makarov has a very good bullshit detector, so he tells the truth. "Two reasons, A) I want to join the guild and B) I'm looking for my brother and I heard that he is in this guild." He recounts, causing the master to raise an eyebrow. "And what's your brother's name?" the guild master asks, causing Jack to grin. "My brother's name is Natsu Dragneel." He proudly announces, causing everyone in the guild to look over. "D-does t-that m-mean…" Makarov stutters if pure fear, Jack smiles as he ignites his hand. "I am a fire dragon slayer." He states with, again, nothing but pride. This, however, caused the short guild master to pass out. Everyone else, in contrast, was overjoyed that they got another slayer.
"Where do you want your guild mark?" Mira asked with her ever-present smile. Jack looked at her and any doubt left him. He then noticed the aura of pure familial comfort the guild gave. "Left forearm dark green." He said with a grin.
(TIME SKIP)
Jack looked at the destroyed guild hall in rage, he hasn't been part of the guild for even a day and he considered it home. "One good thing, however, came out of this." He heard Makarov say, he turned to look and saw team Natsu facing the short man with their backs to him. All their outfits were the same as in the show, but Natsu had two scarves. "And that is?" Natsu asked, the anger about the guildhall evident. Makarov gestured them to turn around, and when they did, Natsu's face went from one of anger to shock. "J-Jack? Is that you?" He asked, hope in his voice and eyes. Jack grinned, feeling like he just found a piece of himself that he never knew he lost. "Long time no see, bro." Jack said, causing Natsu to tackle him in a hug and start to cry in joy.
"But, why did phantom do this?" Lucy asked, not knowing about their relationship with Fairy Tail. Mirajane then walked up to the group. "Phantom Lord and Fairy Tail have been at each other's throats for a couple years now, but nothing like this. It's probably a one-time thing." She answers, but Jack, knowing better, speaks up. "No, every fiber in my body is saying that this is just a prelude to the coming storm. Over the years I've learned to trust my instincts, and they say that this isn't over, it's only begun. But we must wait for the right moment to strike. Currently, nothing can be traced back to them, but when it is obviously them attacking us, we will hit them with the fury of a legion of dragons." He said, causing everyone to nod in understanding. They saw what he was saying, and understood. "You never led me down a bad path before, I will follow you to hell and back bro." Natsu said, smiling at his twin (AN: I don't remember Natsu's age so I just went with sixteen).
(TIME SKIP)
"So Jack, what's with the sword with a gun-sheath and robotic wolf?" Lucy asked him, they were in her apartment. Jack wanted to wait inside but Natsu dragged him in through the window. Lucy wasn't happy that the new guy broke in, but calmed down when they explained how he got in. "Well, they are literally gifts from God. The sword belonged to a warrior in another dimension. He had a bunch of names, the most important ones being 'Jack the Ripper' and 'Riden'. He got the evil sounding one at ten years old, due to his high kill count because his warmonger of an adoptive father made him into a weapon. He got Riden when he joined the good guys. The sword's name is 'Murasama' and it's something called a high-frequency blade. I don't know the science to it but basically, it cuts everything with ease. Bladewolf was one of Riden's ally's, he is a sentient robot to put it simply. Riden had done something that was the right thing but got him on the wrong side of the law. So, when he eventually fell, god held onto Murasama so he could give it to a worthy successor, and that's me." The others looked at him as if he was crazy. Natsu then began to chuckle, the rest of the looking at him. "You always have been a magnet for trouble. And I am saying that." He said with a grin, causing Lucy, Grey, Happy, and Ezra to pale in fear. Natsu thought that his brother caused trouble? They turn back to the other dragon slayer to see him asleep in a sudden sleeping bag.
(TIME SKIP)
Jack looked at what Gajeel did to team shadow gear in rage. He unsheathed Murasama and cut the metal holding them to the tree. He gently sets them down as master Makarov arrived. "I can handle our guild hall being destroyed, but I will not stand idly by as my children are harmed." A dark aura enveloped him as he crushed his staff. "We must go to war!" He shouted in rage.
(TIME SKIP)
"Hell yeah! Let's go swat some fairy's!" An arrogant Phantom Lord member shouted as he and his companions neared the door. As they were about to open it, the door exploded and revealed the entirety of Fairy Tail, Jack and Natsu at the front, and the entirety of them were pissed. And then, Master Makarov spoke.
"Fairy Tail has come calling!"