Before you read the chapter, I want to talk about ssj. Because of the WIDE power level gap between Fairy Tail and DBZ, I'm going do some nerfing. Other wise Natsu would just be too op. See author notes.

Disclaimer: I don't own Fairy Tail and DBZ.

Natsu Dragneel, The Legendary Super Saiyan.

Chapter 2: Natsu's New Strength

Phantom Lord Arc

Natsu Dragneel was staring a Jose while leaking out a huge amount of killing intent. Phantom Lord and some Fairy Tail mages were paralyzed with fear. He was beyond furious, why you may ask? Because A, Phantom Lord wrecked their home, B, Phantom Lord hurt his master, and C, Phantom Lord killed Erza. Natsu grinned madly at his new power and at the same time wondered where it came from. But he couldn't care about that, right now, he needed to stop Jose from hurting more of his nakama, even if he has to kill him.

Meanwhile, Jose was dumbfounded at the energy coming from the light green haired mage. From his knowledge, he knew "Salamander" was strong but couldn't compare to "Titania". But this, was entirely different, almost as if he could be on par with a Wizard Saint, maybe even more. Jose quickly diminished those thoughts and told Fairy Tail to hand over Lucy. Though shaken, Fairy Tail refused to hand over Lucy as they see her as a comrade. "Fine, in 15 minutes, I will fire an even bigger and stronger Juptier against them in 15 minutes, once it is reloaded." Yelled Jose with an evil smile

That got Natsu really angry because he didn't want one of his guild mates to suffer the same fate as Erza. Natsu jumped to Jose and prepared a fist. Jose was caught off guard when he felt a large fist on his left check. Jose was send flying and crashed into his guild. Everyone was shocked by this because Natsu, the idiotic mage, managed to do damage to a Wizard Saint. Aria saw what happened and knew Natsu was a threat and had to be taken out. He planned on using his Metsu spell to drain Natsu of his magic.

Before that, Natsu saw Aria and he remembered what the man did to master Makarov and felt more rage. "You hurt the old man...you must die!" Yelled Natsu as he began preparing his magic. "Mestu!". Said Aria calmly as he began to drain Natsu's magic. Unfortunately for Aria that proved to be a fatal mistake because Natsu had so much magic and energy now, it was going to take a while for Aria to drain him completely. It was simple for Makarov because he's old, but Natsu is stronger than he was before. And it gave Natsu time to charge one of his attacks. "Fire Dragon's Roar!". Yelled Natsu as his checked bulged and gather fire in his mouth, before firing it at Aria. To make matters worse, because Natsu was angry and the air around Aria was flammable, Aria was caught in a semi large explosion. The smoke vanished to reveal a bloody Aria without his hat and his clothes were scorched and his body was covered with third degree burns.

Despite all that, Aria was smiling. Why? Because his blindfolds were destroyed in the explosion, which means his true power was unleashed. "You fool, burned my blindfolds. Which means I can use the power of "Zero" to kill you. It is the airspace of death! Yelled Aria as he believed he won this fight. His eyes start shining brightly as he readies to cast it, bringing his charred hands before him. A very large, spiraling airspace is generated before him. Natsu didn't care for his crap, he wanted him dead on the floor. Natsu channels ki into his right hand and a small green energy ball is formed. The airspace is heading to Natsu and his fellow guild members told him to move out of the way. Natsu obviously ignored them and was focusing on taking his revenge. Natsu threw the green ki ball and it made contact with Aria. After that the energy ball grew really large and engulfed Aria. Aria screamed and before he knew it, he turned to ashes and the energy exploded. Giving off a huge green light.

Once it died down, everyone shocked because there was a small crater where Aria was. Even Jose was flabbergasted. He earlier got back up while blood ran from his nose and lower lip. Aria, the strongest of the element 4, was beaten easily by a mage. The saiyan mage killed Aria and didn't even show any remorse, he just smiled at what he's done. "I taken out your crybaby, your next Jose". Natsu said as he guaranteed he was going to kill Jose.

As for Natsu's friends, they were still trying to figure out what happened to Natsu. Lucy couldn't believe this was the same person who rescued her from Bora. Gray couldn't believe Natsu's new strength. Happy was concerned for his 'father' because he never seen Natsu take a life before without feeling any hint of guilt. It was different for monsters since there were every where. But taking a human life was really important. Sure Aria was a bad person, but what Natsu did made him look like a monster.

Jose decided he was going to deal with the dragon slayer. "Gajeel! You come with me! The rest of the Element 4, deal with the fairy mages until Jupiter fires again!" Demanded Jose. The Wizard Saint decided to stop holding back since Natsu could easily kill him if he didn't use all his magic. Natsu saw an injured Jose and Gajeel walking towards him. "You think two on one is going to work? I'm going to make you feel true terror for hurting my family." Natsu said as he was prepared to fight Jose and Gajeel.

Chapter End

Author's Notes: Natsu vs Gajeel and Jose be ready for this folks. Now, as for super saiyan. I'm going to use the excuse that ki powers up magic in this AU. Which means oozaru and super saiyan transfomations will be less powerful than they were in DBZ. Natsu will receive a higher boost in power level, it will just be nerfed.