Ash ran to his Krookodile as the ground type reverted to his original state. Ash helped his Unovan ace to his feet and together they walked to the other Pokémon.

Ash set the dark type with the other four pokemon. Then he turned to face Greninja.

"It's all up to us now Greninja." Said Ash.

"You got it Ash." Said Greninja nodding his head.

Greninja walked onto the field while Ash walked to his spot where he usually stood. Tobias recalled Reshiram to it's Pokéball, then reached for the final pokeball on his waist.

He held it up in front of him as he faced Ash and Greninja.

"Yveltal I choose you!" Shouted Tobias throwng the pokeball.

Ash and Greninja's eyes widened as they faced the legendary Pokémon of Kalos. It 'stood' at nineteen feet and was flapping its massive wings as it looked down on Ash and Greninja.

Then Ash surprised everyone by breaking into a smile, who was soon copied by Greninja.

"Ready Greninja?" Asked Ash.

"You better believe it Ash." Replied Greninja getting into a fighting stance.

Then the trees retracted into the ground as the field entered it's final stage.

This change was the most surprising. The platforms Ash and Tobias were standing on rose into the air. The platforms stopped at a very high spot in the air, also there were multiple platforms rising from the field, leaving multiple holes in the field, if you fell through you would have some time to think about it on the way down.

"This is the special field known as the Sky field, if a Pokémon falls off the field, at a lower point there is a force field that will force any Pokémon that passes it back to their pokeball and that pokemon will be deemed unable to battle." Explained the announcer.

"Greninja use Water shuriken!" Shouted Ash.

Greninja generated two Water shurikens from the shuriken designed on his legs, then threw them at Yveltal.

"Use Dark pulse!" Commanded Tobias.

Yveltal fired the dark type move at the shurikens and destroyed them, the pulse continued towards Greninja.

"Move!" Said Ash.

Greninja reacted quickly jumping from island to island.

A/N: The holes are more like dividing gaps, so the field is more like a mass of islands. There is a large hole in the center and that is where Yveltal is.

Greninja stopped behind Yveltal's line of view.

"Greninja use Night slash!" Instructed Ash.

Greninja generated two blades of darkness as he lept at Yveltal ready to slash the flying type.

"Yveltal use Phantom force!" Ordered Tobias.

Suddenly the dark type was gone and Greninja was slahing at air.

"What?!" Said Ash in confusion.

Suddenly Yveltal appeared from behind Greninja and slammed into the water type using the ghost type move.

Confused by the Phantom force Greninja was unable to land on a plat form and was starting to fall down towards the force field.

"Stab the walls with the blades to stop your fall!" Said Ash.

Greninja's eyes widened then he turned and stabbed the wall before he could fall further.

"Now use Aerial ace!" Commanded Ash.

Greninja's hands and feet began to glow as he jumped from wall to wall using the flying type move.

"Yveltal stop him with Oblivion wing!" Shouted Tobias.

Yveltal's wings began to glow a terrifying crimson as it fired the draining flying type move at Greninja.

"Greninja go faster!" Said Ash.

Responding to Ash's command, Greninja increased his speed making it so that Yveltal couldn't hit him.

When he reached the top Greninja lept at the flying type and dealt a powerful blow to the dark type's face. Then he pushed himself away leaving him open in the air.

"Yveltal use Dragon rush!" Ordered Tobias.

Surrounding itself in a bright blue energy, Yveltal charged at Greninja with the intent to cause some serious damage to his frog/ninja inspired foe.

"Greninja use Ice beam to slow it down!" Ordered Ash.

Greninja held his hands to his face creating almost tube like shape, took a deep breath, then fired the ice type move at the incoming Yveltal.

When the ice hit it slowed Yveltal down enough for Greninja to be able to regain his balance and get out of the way.

Greninja landed gracefully in front of his trainer and together they faced their foes head on. Yveltal returned to its orginal location as he faced Ash and Greninja. Ash smirked.

"That Yveltal of yours is very powerful Tobias." Complemented Ash.

Tobias smiled in return to the kind works that Ash were giving him about his pokemon. Then Ash's face turned serious.

"But we are never going to give up, isn't that right Greninja?" Asked Ash to his Pokémon.

(Ash's POV)

Greninja turned to me and smiled.

"You've got that right Ash." Said Greninja.

I closed my eyes for a moment before opening them, this time I was using my aura vision. Now I could see the auras of everyone in the stadium.

Interesting fact: Every aura has it's own unique wave length, a rhythm and pattern that the aura moves in, both people and pokemon have their own seperate wave lengths. I can actually judge the bond of a pokemon and it's trainer using this, the closer they are the more similar their aura wave lengths will be.

I looked at both mine and my Pokémon's auras each of their wave lengths were in almost perfect sync with mine, but had their own differences, honestly even with my training I sometimes have difficuty differentiating their auras from my own.

I looked at Greninja and he looked at me, we shared no words but we could tell what the other was thinking. We both turned to face Tobias and Yveltal.

"Now Greninja, together!" I shouted sticking my right arm into the air.

Greninja stuck his left arm in the air. I could feel our bond making us stronger.

A/N: Hint: This synchro evoulution scene is based off of the Ash-Greninja transformation in the second battle against Wulfric.

During synchro evoultion our aura's wave length's move in perfect sync. I felt my mind become one with Greninja's.

We put our arms to our sides as an enourmous vortex of water erupted from the ground and surrounded Greninja.

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