Disclaimer: I do not own Fairy Tail or any of it's characters

Since I was inactive for so long I am going to give you guys the next chapter, enjoy.

Sonja winced as she slowed to steady herself. She knew she would die from the poison that went through Natsu's veins when she drank from him, the river Styx would kill her on the battle field before any of the demons could finish her off. She was disoriented and her senses were off, during her distraction Sting walked up to help her. She jumped a little bit at his presence, and sighed at how out of it she was.

"Do you need help?" he asked.

"Maybe just a little," she confessed. She had never asked for help before. The Gospels normally scolded her later for never allowing them to help her. This time she needed Sting and Rogue to help her defeat Cain.

"Who are you looking for?" Sting asked.

"Cain," she said, "give me a second I might be able to sense him." She closed her eyes in order to concentrate. Her magic power was slowly regaining as the battle went on, normally she would gain power quickly especially with the horrific battle that was going on around her but after six months of little power her body couldn't keep up with all of the magic power flowing around her.

Chills went up Sting's back when he heard who she was targeting. Thorn and Cain were his main torturers. The information that they both wanted was deemed too important to just let the regular demons torture them. Cain seemed to get a sick pleasure from watching him scream. He thought about running but decided not to leave Sonja. Sting had flashbacks of his stay in the dungeons, the constant pain and fear he wasn't sure he would ever get over. He didn't want to imagine his fate if Sonja never showed up, even without meaning to she saved his and Rogue's life.

Sonja opened her eyes when she found Cain on the battle field, he was fighting Lucy. Sonja started running. Cain was extremely strong Lucy would be cut down in front of him. Lucy could normally defend herself but something inside Sonja told her that Lucy would not be able defeat him. When she got closer she noticed that Velkan was fighting with Lucy and breathed a sigh of relief. Then she hunched over and coughed up blood, Sonja was worried that she wouldn't have enough time to defeat Cain alone.

She looked up to the war that was going on and was proud of her guild. From the beginning Fairy Tail had outnumbered the demons but no one in Fairy Tail had fallen to the demons. The six months of training had made them stronger than the demons that they were facing, Erza was able to take down demons quickly and helped protect the younger mages. Sonja figured she would target Minerva later in the battle sense they had a history together. She couldn't see Natsu fighting Thorn but she could hear the attacks and feel the heat of the Hell's Fire that Natsu was using. She got up determined to finish Cain, if her last breath was given to protect this guild she would die happily.

"Cain!" she yelled to get his attention.

Cain smiled and sighed, "ugh finally someone to test my new strength on."

"Bring it," she said this as she summoned her armor from the underworld. She didn't change into her demonic form. The poison from the river Styx would flow faster if she was a demon. Parts of her body were showing that her bones normally covered, she didn't think that she would make it out of this battle so the new weaknesses didn't bother her.

Cain walked over eager to start their fight instead of using a weapon he decided the first blow between them would be with his own hand. He towered over her, anyone from the outside would have put there odds on Cain but the determination in Sonja's eyes would have made them think differently. As soon as he was close enough he brought his fist down, she was fast enough to put her shield up to block the punch and then kick his legs out from under him. Once on the ground she got on top of him and landed two punches, Cain didn't react to either. "Princess, you aren't looking too well."

"Shut up." She said as she rolled off of him and get into a battle stance.

Cain wanted to finish this quickly, he changed from his suit into his armor. His armor was bones from the giants and dragons in the underworld. Dragon skulls decorated his shoulders and he had the spine of a dragon as a sword. His shield was made of a giant's shoulder blade. Dragon scales covered his entire torso as well as his upper arms and legs these acted much like chainmail. He was covered in extremely strong armor that would take a lot to puncture, magic attacks would work best to defeat him. Sonja was surprised on the armor that Cain had, normal weapons would not be able to penetrate the shield and dragon bones and scales were extremely difficult to scratch let alone pierce through. She sighed when she realize that she would lose unless she went into her demonic form.

Sonja started to change. She felt different, she looked exactly the same except now her eyes where gold instead of black. She could sense Natsu close by which made her stronger she didn't feel evil in this form as she normally did. She wanted to defeat the threat to her family and go home instead of having a blood lust for anything moving within reach. She assumed it was Natsu's blood that made her heart and will strong enough to control her evil side. The chaos of the battle was feeding her power and strength, for the first time she felt invincible even though she was already close to death. The guild was by her side they had all laid their lives on the line to protect what was precious to them she would not let their sacrifices go in vain.

She looked up at Cain, she smiled at him. He flinched at the expression on her face. She brought up her sword and charged at the demon. Her smile in this form was always more a smirk, her teeth never fit in her mouth well and her fangs were clearly visible from underneath her upper lip. Her golden eyes haunted the demons more than her black ones, they didn't understand her change but Cain defiantly feared it.

Elsewhere on the battle field…

Natsu was able to sense Sonja's battle from where he was. He was slightly worried that she was fighting Cain. He could remember Cain from six months ago when he attacked the guild. He didn't see Cain's power back then but he felt stronger on the battle field this time. He was brought back to the battle at hand when he heard water rush past his head, he silently thanked Kizak for the training. His instincts and reactions to battle were more subconscious, so he didn't only have to face the battle in front of him.

"Keep your head in the battle," Thorn said arrogantly, "I figured Kizak would have at least taught you that." He was annoyed that this pathetic mortal wasn't even giving their battle his full attention. He was a god, this mortal should fear him but instead he seemed distracted.

"Fire Dragon's Roar!" was Natsu's answer. He mixed his attacks with Sonja's Hell's fire. All of his attacks were twice as powerful than before. But the black fire was more destructive, even he did not want to do this much damage in Magnolia. He knew that if he didn't keep his magic in check innocent people could be hurt in a war they weren't yet part of.

Thorn panted as he barely missed being a direct hit, he cursed his sister for giving Natsu control over Hell's Fire. He felt utterly betrayed by his sister, she had chosen this mage over him and this guild over her own kind. He would never forgive her for this, he would claim her head. Her Hell's fire power was his exact opposite and was indeed more powerful, Sonja had given Natsu the only power that could defeat him. Did his beloved sister really hate him so much? Yes he had tortured her and even wished her death but Sonja was never blood thirsty, she normally avoided killing anyone even her enemies but she defiantly wanted his destruction. Her wish to have him killed bothered him greatly. But he started thinking about Natsu, how did he survive a direct hit from the river Styx? By now the water should have killed him or at least made him a demon which would have made him loyal to Thorn yet he was still fighting for Fairy Tail. Then it hit him she must have taken it out he wasn't sure how he still survived but he knew that it was Sonja who allowed Natsu to currently fight him, she could defiantly die in this battle. He had the urge to combine with Minerva but his common sense prevented him from doing so. He knew the out come of giving in completely to Minerva, if Sonja did that she was now mortal and could easily be killed. Natsu was on par with Thorn strength so he needed a different tactic to defeat his opponent, he thought of psychologically warfare against his opponent. "Sonja is dying, can't you feel it?"

"No she is immortal, she can't die!" Natsu said as he hit his opponent again. But he had already started to feel a drain on Sonja's power. His attacks were fatigued because his combined power with Sonja was weakening. He knew what was happening without being told, Sonja wasn't the same. The conviction in his voice wasn't there, since the battle started he could sense a change within Sonja, he wasn't sure what happened but it worried him. He was concerned that it was possible that his blood made her weaker while her blood made him stronger.

Thorn smiled as he seen concern cross Natsu's face, he had gotten to the little mage. Even Thorn could tell Sonja's power was fading. "She gave up her immortality for you. She condemned herself to die to save you and the other mages here today," he said. He was grieved that Sonja would die today but he was mostly relieved. Even though him and Sonja were at war today growing up they were very close, he protected her until she was strong enough to protect herself. Now when he thinks of it he laughs at the idea of Sonja being small or weak enough to need protection, sometimes he figured that even as a baby Sonja was strong and he had convinced himself that as a big brother he had to protect her. He was slightly distracted when he thought about when he had changed, when his attitude towards his baby sister changed. Natsu's voice brought him back to the battle.

Natsu shook his head, "No she will make it," he said convinced that she would fight to live. He pushed more power towards Sonja hoping to help her. He would end this threat to Fairy Tail then he and his mate would go home, for once he needed to be sure that the woman he loved would survive. He wasn't sure he would be able to go back to a Fairy Tail without her. Instead of rushing to her side he knew Sonja would be okay that she wanted to come home and live a life with him, no matter how short.

Elsewhere…

Sonja looked up as she felt sudden energy. She smiled at how strong the connection was between her and Natsu. She needed to beat Cain for them, she smiled at how silly she must seem to the demons here she was willing to kill them all to give Fairy Tail's current mages about fifty years to live. She then thought about how she wouldn't get to see those fifty years with them, she felt a tear fall down her cheek. She knew that those fifty years would be glorious and that they would go down in history. Then the next generation would be just as strong maybe even stronger trying to beat this generation. She wished she could watch them grow old and help train the new generation. The thought of the children that the members of Fairy Tail strengthened her resolve, she needed to beat Cain to guarantee the survival of Fairy Tail.

She felt a hand on her shoulder as she was pulled away from Cain's sword, "Sonja you need to pay attention," Sting said in an irritated tone. She gaped wide eyed at the sword that was just inches from her chest. She needed to pull herself together.

Sting had seen Sonja tortured and he could tell that she was worse off now than she was when she was crucified on the wall. Even in her demon form she did not seem all that strong anymore. It was obvious that she was extremely powerful but it was like no matter how hard she tried there was a wall that she couldn't get over. He was concerned for her. Rogue and Sting helped her fight Cain, they could tell that she was off. Rogue and Sting both activated their Shadow and White Drive modes to deal with the demon. They whimpered when they seen the dragon heads on his shoulders, as dragon slayers they felt for the poor dragons that fell beneath Cain. They had made a pact to each other to defend Sonja with both shield and body, they both loved her as a sister now. She was a precious treasure to both of them and as dragons they protected their treasure with their lives.

Sting and Rogue switched to hand-to-hand combat to gather some magical energy as they decide to do a unison raid. It was their strongest attack and they needed to hit him dead onto kill him. As they were fighting they both had to be on constant guard to watch for other attacks. Cain was extremely fast and they didn't put it above him to call Shadow Demons to his aid if he felt the need to. In a moment of weakness Sting misread Cain's movements and allowed Cain to get a hold of him. Cain hit Sting hard in the back of the head. Sting felt the warm rush of liquid as the wound began to bleed. He started to fall forward, he used all his focus to stay conscious, it would mean death if he blacked out now. Rogue had just blocked two attacks from Cain, as he turned around he seen Sting falling a blood rushing from a wound in his head, he could see Cain was standing over Sting. Cain was rising his sword over his head using both hands just as Cain was moving to give Sting a finishing blow Rogue quickly punched the demon away from his friend. Cain was momentarily stunned but quickly recovered and moved to attack the shadow dragon slayer again.

Rogue fought well for a while against Cain, he had told Sting to take a few moments to regain his wits before joining the battle again. Rogue parried each sword strike from Cain with his own sword but after several minutes but Cain was able to take Rogue's sword. Rogue watched as his sword flew 20 feet from his reach. He stood there staring at his own doom as Cain brought his sword down. Rogue shut his eyes and waited for the finishing blow. Just as the sword was inches from Rogue's head Sonja brought her arm up at the last second and caught Cain's arm. Cain looked over to face Sonja, "Is the princess going to fight now?" He expected Sonja to stop him from finishing off either dragon slayer, she has protected them body and soul since they had met he knew she wouldn't let anything to happen to them now.

Sonja kicked him in the stomach hard enough to send him back several feet, "Boys are you okay?" she asked.

They both shook their head yes as they got up into a battle stance, "look you boys need to kill him, if an immortal kills them they can regenerate but if a mortal kills them they stay dead okay?' she explained as quickly as she could. They gave her a curt nod in a response, they were determined to kill Cain for her and for the damage that they both suffered.