Spoiler for recent Manga

Also I believe I am right about how Dragon slayers track smells Wendy said in one of the more recent Manga she could no longer smell [blank] and Ezra confirmed they were dead. But a body's scent does not fade once they die, but their magic does vanish.

ChimaTigon: not for a while I do have a plan for the HP universe but it is a long ways off. Like thirty chapters off.

Wendy and Harry were only able to rest for a few minutes before an explosion rocked Nirvana. Wendy shot awake at the explosion and looked around fearfully. "What happened?" asked Wendy, looking around scared it was only than Harry noticed Nirvana was still moving. Up here far above the ground and as exhausted as he was he didn't even notice it was still moving.

"I don't know but something tells me it's not good."

A surge of immensely powerful magic swept through the air. "Is that Brain?!" Harry exclaimed in disbelief. "No way that guy didn't have anywhere that level of magical power before!"

"But it is." Wendy confirmed. "Can't you smell it." she said sniffing the air.

Harry did as well and caught the scent of Brain on the magic. It was how dragons tracked not just normal scents but magical ones as well, they essentially smell a person's magical signature. "But it smells different, more wild and uncontrollable."

"It's Zero."

"COBRA!" Harry called seeing the Poison Dragon Slayer resting on the back of his snake Cubellios.

"Who is Zero, I thought there were only six members of the Oración Seis." Carla asked, she knew these brutes were not the most intelligent of people but seis did mean six.

"Technically there are." Cobra agreed. "But the six members also hold back the split personality of Brain called Zero. he only comes out when all six of us have been defeated."

"A last resort." Carla concluded with a look of worry. Who ever this is was dangerous enough that the Oración Seis deemed him too dangerous to run wild. Not the most comforting of thoughts. "Is there any way to stop him?"

"Not that I know of." Cobra said shaking his head. "It takes a few minutes once all the seals have been broken for Zero to emerge but normally he will just do whatever he wants until Brain manages to suppress him once more." Cobra shivered remembering the one time they had all been defeated, the destruction Zero had caused just for the sheer enjoyment of it all. Brain always did everything for a purpose, never destroying anything without reason. Zero's purpose was destruction and his reason was mayhem.

A wave of power rocked Nirvana once more. "Shit! That was Zero!" Cobra cursed, that guy didn't care if you were friend or foe. But something told him he didn't take betrayal to well.

Harry slowly stood up wincing as he did so. He nearly fell to the ground before Rai caught and steadied him. "Careful Harry, you are still hurt." Rai warned his partner, even with Wendy's healing he wasn't in the best of shape.

"I'm fine." Harry dismissed, moving his weight off of Rai so he could stand on his own. "Come on this Zero guy isn't gonna beat himself up."

Cobra looked at Wendy and Carla before turning back to Harry. "You are crazy." He decided after a moment. "That's the only way to explain why you would go fight Zero." Carla found herself agree with the repentant criminal. Clearly all members of this fairy tail guild were insane from what she has seen.

"Well than you are crazy for following me." Harry pointed out.

Suddenly beams of light and darkness began to swirl around them and gather in front of Nirvana. "Oh no!" Wendy cried realizing where they were. "It's going to fire on Cait Shelter!" she stood on shaky legs and began to move towards Nirvana's canon.

"Kid what exactly are you going to do?" Cobra asked the small girl. "That thing is so powerful that it had to be sealed away and it is so dangerous that it destroyed the very people who made it." He pointed out making Wendy shrink realizing he was right. Than she remember old man Robb, Granny Mei and the others; she stood tall and glared him.

"Whatever I can!" she said firmly before marching in the direction of the canon. She nearly fell to the ground when Carla caught her.

"Come on child." Wendy looked at Carla in surprise, she didn't the cat would support her foolish move. "Cait Shelter is my home as well." she told Wendy as she sprouted wings and took off into the air.

"Come on Rai." Harry called slowly following after before the talking cat also sprouted wings and picked him up before following their fellow Flying Cat, Dragon Slayer pair.

Cobra sighed at their stupidity before he noticed Cubelios giving him a look. "What I not going after them it's suicide!" He exclaimed, the snake hissed in displeasure. "Alright fine, stupid snake." he said, mumbling as he followed after them about how maybe he was better off not being able to understand her. He received a tail to the head for that.

The canon was moments away from firing when a blast of magic slammed into the side of one of the legs, the damage was so minuscule it barely affected the walking city. But it was enough to move the nirvana blast enough so it just missed the guild.

Wendy collapsed in relief when she saw that her legs giving out on her. Harry caught her at the last second nearly falling to the ground himself. "Can anyone hear me? can anyone respond!" Hibiki called.

"Wait a minute that sounds like Hibiki!" Harry said looking at around trying to find him. The range for telepathy magic was quite small meaning he would have to on Nirvana.

"Isn't that the ship we blew out of the sky earlier?" Cobra asked pointing up into the sky. Following his finger they saw a flying ship!

"It's the magical Bomber Christina!" Wendy exclaimed.

"We can hear you!" Harry called hoping he was able to receive them.

"Harry Wendy and -watch out COBRA'S RIGHT NEXT TO YOU!" Hibiki warned in a panicked tone.

"Don't worry." Harry told him easing his worries. "It's a long story but let's just say now he's our friend."

"You know you should be careful when send out a telepathic message like that anyone can hijack the frequency and listen."

"LAXUS!" Harry exclaimed happily. "What are you doing here?" he asked cheerfully.

"Well I heard Fairy Tail was in the area and thought where's the nearest explosion and look what I found." Laxus said sounding amused. Cobra and Hibiki suppressed a snort while Wendy giggled, that sounded like an accurate way to track the Fairy Tail guild.

"How did you the bomber flying again I saw the Oración Seis shoot that out of the sky." Carla asked.

Hibiki let out an exhausted laugh. "It wasn't easy let me tell you but for a group of wizards who have never worked together we did pretty well. A wing was destroyed in the fall and Gray and Leon are working together to make a new one."

"It's a lot harder than it looks." Gray added.

"Yeah and on the bow is Cherry with her Marionette magic and Rei with wind."

"This lesson is great and all, but how do we deal with the giant walking city?" Laxus asked making Hibiki shake his head and get back on track.

"I finally managed to decode the info on Nirvana it turns out those appendages aren't legs but rather pipes that drain magic from the ground and focus it into a single blast using six lacrima that sit at the base of each leg."

"So all we gotta do is break them sounds easy enough." came a fifth voice.

"Gajeel! Where are you?" Harry asked.

"Near the tower where we confronted Midnight that punk can not take a hit." the iron dragon slayer answered.

"It's not that simple." Hibiki said. "You have to destroy them all simultaneously or else they will just reform."

Damn! It's never simple is it?" Laxus said sighing.

"Even if you had six people it wouldn't matter." a sixth voice interrupted though this one was not friendly.

"Zero!" Cobra exclaimed in fear.

"Yes and I will deal with you traitor soon. But as for the rest of you try and make your way to the six lacrima I am standing right in front of one of them and I have no intention of moving." Zero said with a crazed laugh.

They stood shocked for a moment before Hibiki shook his head and got back to work. "We need to strike all six at once, I would maintain a connection but I am running low on magical energy."

"How about a timer?" Laxus suggested.

"That could work but it would have to be short we only have twenty five minutes before it fires again."

"Make it twenty that's all we need." Gajeel said.

"But we need a sixth person." Hibiki pointed out.

"I got that covered." Laxus said, before mentally calling out to Natsu. "Hey Dragneel if you get up there's a member of the Oración whose ass still needs kicking!"

Natsu opened his eyes at hearing that. "Come on Natsu! Remember Lisanna is down there! If you don't get up she will die!" Gray told him and Natsu snarled and punched his fist into the ground cracking the stone.

"Over my dead body!" He called.

"Than I shall enjoy crushing you once more." Zero said with an amused laugh. "You think you insects can stand against my might? I am a god amongst men!"

Harry smirked. "To bad for you were aren't men, we are dragons! Would you like to see what happens when we roar?"

"Kid's right, you are going to regret messing with Dragon Slayers." Gajeel added.

"I'll take Tunnel one!" Natsu called.

"Two!" Gajeel called.

"Three!"

"Four!"

"Five!"

"Than Wendy's got six."

"Try your be-" the telepathic link cut off as Hibiki ran out of magic.

Wendy quailed realizing she may have to fight. "But I-I can't fight." She said looking down. She was weak and useless.

"Wendy you are a Dragon Slayer and if there is one thing I know you can do, it's roar." Harry said placing a hand on her shoulder. She looked up at him sadly.

"But I don't like to fight." She said shaking her head. "I not like the rest of you!" she cried.

"Wendy you don't have to like to fight but when it comes down to it, ask yourself how far are you willing to go to protect your family?" Harry said.

Wendy looked surprised and thought about for a second before a look of steel came into her eyes. "To the very end!" She said wiping away her tears.

"That's the spirit kid, now let's move." Cobra said taking off in the direction of his tunnel.

Slowly all of them made their way to the Lacrima. Nirvana shook as Natsu fought against Zero.

"Lucky punk." Gajeel muttered as he reached his lacrima, he knew Dragneel called one for a reason.

As the countdown reached zero they all began to cast their spells.

Harry took a deep breath. "Storm Dragon's-"

"Poison Dragon's-"

Laxus remembered why he came and what he learned. "Lightning Dragon's-"

"Iron Dragon's-"

Wendy paused for moment unsure if she could do this before she remembered what Harry said. "For my family." She muttered before taking a deep breath. "Sky Dragon's-"

Natsu punched Zero into the ground before he leaped into the air breaking through several floors of Nirvana. "Fire Dragon's-"

"ROAR!"

Outside Nirvana in the crashed magical bomber everyone looked up when they heard a loud animalistic roar of power.

"They did it." Hibiki smiled. "I knew they could." he said before finally falling unconscious.

"Damn Matchstick always showing off." Gray grumbled as the roar echoed throughout the forest.