erza scarlet and the fire demon

it has been a months since yuuji had joined fairy tail and things were going pretty well, he had done many D,C,B and A rank quests on his own, he had also become friendly with most of the people in the guild except one,

"get off your lazy ass and get to work!!!"

""YES!!!"" shouted the duo of grey and natsu as a beautiful girl with red hair ordered them around, this girls was erza scarlet, the self proclaimed knight, her relationship with yuuji was explosive at best, he did not like her bossy attitude just as much as she did not like his lazy routine, however she knew better than to use force against him , after all, in the few months he had been here , yuuji had made a name for himself as the fire demon for his extensive use of flames as a primary form of attack, but the demon part came from one of his missions,

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a few months ago, yuuji had received a A rank mission that had to do with investigation the disappearances of many woman and children form a nearby town,

as per the contract, yuuji had managed to find the source of the incident to be a dark guild called the grim reapers, but what he found in the guild had caused him to snap,

inside , all the kidnapped woman were being abused and sold off to the slave market, the kids were being sent to be traded as child slaves, the super soldier was reminded of the atrocities the devils had done to his race and what happened after could only be called a slaughter,

yuuji had first teleported the victims back to the town after which he used his power to burn down the guildhall he then proceeded to trap the place in a spacial barrier so that no one can escape and watched as all the members burned into nothing in his blue flames, this had earned him the nickname as the fire demon, although his guild did not approve of killing people, what they found about the dark guild had justified his actions , thus the incident was not persued anymore,

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"yuuji , there is a request for you here !!" shouted the master to which the said soldier walked towards,

"it seems that someone needs your help at a dig site , but they asked specifically for you and erza , the pay is also very good" said the master, although yuuji was suspecious of the request , he did not find it strange that the client had requested him and erza as a team, after all the three times they had paired up for a request , they had completed the requests in record time with a 100% efficiency, thus they had become quite popular,

however what they did not know was that this request was going to change the way thinks worked between the pair