Hello folks, and welcome back. This chapter is going to be a lot more Pokémon centric than RWBY so keep that in mind when reading, I also originally planned this as a big finale or opener so you'll notice the stakes are quite a bit higher. As for the questions:

Guest: Just wait.

Guest: I already answered this in Chapter 3's question area. But to repeat again: no I will not be giving the RWBY characters Pokémon in this story. Sorry if that disappoints you.

-Night Time, City of Vale-

After the events of the day that had just transpired, most people would have wanted to just take a nap. And Kai was doing just that… In the wrong place. Kai had his eyes closed and his fedora on his chest as slept peacefully on a chair just outside of a police questioning room.

"… U- U- Use draaaa- gaaa… Puuh…" Kai murmured in his sleep, a crossed pair of fingers hovered above his head before snapping, flicking Kai awake. "GAH! USE DRA-!" Kai shouted when he remembered where he was.

"He wants to see you now." A familiar voice told Kai as he rubbed his forehead.

"You know Blake, I was having a pretty great dream there."

"Sorry, but you can sleep when we get home."

"Yeah, yeah. Did he say anything to you that should worry me?"

Blake turned away and started walking off. "Just be careful what you say. And don't say too much."

"Keep my big mouth shut. Got it." Kai replied as he walked through the door.

The room was small and dark with a single window on one of the walls showing Remnants moon. A single light shone down on a white table in the middle of the room and two chairs opposite to each other. The furthest one was vacant but the closest one had Ozpin sitting in it.

"Good evening Kai. I hope that your rest out there has made you energetic enough to answer my questions." Ozpin said kindly.

"Yeah sure. But if I can just ask one first…" Kai responded as he sat down in the empty chair. "Why exactly did you only ask me and Blake to stay here, and everyone got to go back home… To sleep. We all went through the process, we've explained everything, we answered the police's questions, and it's been hours."

"I understand, and I thank you for being so co-operative tonight but the questions I've needed to ask you and Blake are more… Personal."

"Let me guess, you want to ask me about Team Flare, right?" Ozpin didn't answer and took a sip of coffee from his mug. "What would you like to know about them?"

Ozpin put his mug down. "Everything would be a good place to start."

Kai sighed and relaxed back in his chair. "Team Flare was a criminal organization designed on one goal… The preservation of beauty in the world."

"And how exactly did they plan to do that?"

Kai looked down seriously as he began to remember his past. "… With a device in my world known as the ultimate weapon."

"The ultimate weapon?" Ozpin repeated and Kai nodded silently.

"A terribly long time ago… There was a man and a Pokémon. He loved that Pokémon very much. A war began. The man's beloved Pokémon took part in the war. Several years passed. He was given a tiny box. The man wanted to bring the Pokémon back. No matter what it took. The man built a machine to give it life. He brought his beloved Pokémon back. The man had suffered too much. His rage had not subsided. He could not forgive the world that had hurt the Pokémon he loved. He turned the machine into the ultimate weapon. The man became a bringer of destruction that ended the war. The Pokémon that was given life must have known… That the lives of many Pokémon were taken to restore its life. The resurrected Pokémon left the man. And he wandered alone for three-thousand years… Until I defeated Team Flare, destroyed the ultimate weapon for good and helped him find peace, and when he did the Pokémon that left him so long ago finally returned to him." Kai wiped his eyes with his sleeve and sniffed. "Sorry I got a bit side-tracked there."

"It's fine. The information you have given me so far has been very helpful." Ozpin explained. "But back on the subject of Team Flare. Can you tell me who was running the operation?"

Kai looked Ozpin in the eye. "A man called Lysandre. He was the one who ran Team Flare."

"He 'was' the one who 'ran' them." Ozpin picked up on.

"Yeah 'was'. He was a brilliant man, he owned his own tech company and focused his profits on making the world a better place… But I guess making the world a better place means you have to keep seeing it's darkest parts."

"What happened to him?"

"What do you think?" Kai stretched in place and thought in silence for a moment, Ozpin gave him time and took another drink from his mug. When he placed it down Kai started talking again. "I think that it would be better… If I just tell you what happened that day… The day that I took down Team Flare."

"Are you sure? You seem quite distressed about it?"

"… Yeah. Yeah I'm sure."

"Then please proceed."

"Well where to begin? I had just acquired my seventh gym badge and my team only comprised of five Pokémon back then. I was about to head out of the city when…

3 Years ago…

-Afternoon, Anistar City-

Kai was about to head out of the gate into route 18 when he felt a buzz go off in his pocket. He reached and grabbed a small green device which had a blinking blue light.

'My Holo Caster? Is there an announcement or something?' Kai thought, as a tinted-blue holographic image of a man popped up.

The man was pale had very spiky orange hair that looked like a lions' mane (or Pyroar's if you prefer) connected to his beard. He wore a black suit, lined in red and a pair of black fingerless gloves.

'Lysandre? Oh, this might be an announcement from his company or-'

"Pokémon Trainers." Lysandre started to say. "I come to you by the Holo Caster to make an important announcement. Listen well. Team Flare will revive the ultimate weapon, eliminate everyone who isn't in our group, and return the world to a beautiful, natural state. Unproductive fools are consuming our future... If nothing changes, the world will become ugly and conflicts will raze the land from end to end. I repeat. We will use the ultimate weapon and wipe the slate clean. I'm sorry, those of you who are not members of Team Flare, but this is adieu to you all." Lysandre then disappeared.

Kai was left silent as people in the streets who heard the same message began murmuring and panicking.

"What?" Kai murmured in disbelief. "This… This can't be real…"

"But it was oh too real." Kai elaborated in present day. "I first headed back to Lumiose city where I went to Lysandre's private café only for my worries to be confirmed near instantly. I battled my way through Lysandre labs battling every grunt, admin and even some of those scientists that were here today. I learnt the tragic story about the ultimate weapon from a giant called AZ, Lysandre left me alone with Xerosic, the same man that took Yang captive and then…"

Malamar fell to the ground knocked out. Floating in front of him were a pair of joined floating swords with a single pink eye each, and pink tassel arms wrapped around a shared sheath.

"Way to go Doublade! I knew you could do it!" Kai cheered.

"Doublade!" The sword Pokémon sheathed itself and cried in appreciation, before Kai returned her.

"Oh ho ho! You're wonderful! Your Pokémon are amazing!" Xerosic complimented.

Kai smirked. "You don't need to tell me that, sorry to say but your plans to destroy the world are cancelled."

"Wonderful! Amazing! You have tremendous skill and bravery! When you add that up, it means I will tell you something very interesting. It happened 3,000 years ago. The ultimate weapon was used to put an end to the war in an instant. If we use that incredible power, we can finally free Kalos of the foolish humans that plague it! Behind me you'll find a red button and a blue button. One of them is the button for activating the ultimate weapon. Push one now! Come on! Push one!" Xerosic gestured to the two buttons on a wall behind him.

"So, we're putting the fate of the world on my gut instinct… Yeah we're doomed." Kai spent a good few minutes pacing around the room in deep thought before putting his hands on his head hard in annoyance. "Aah! I can't pick the stakes are too high!"

"Please take all the time in the world, there might not be much left after your choice."

"YOU'RE NOT HELPING! SHUT UP! I need a second opinion I- wait!" Kai grabbed his Poké balls threw them up into the air releasing his five Pokémon: Greninja, Talonflame, Doublade, Slurpuff and Lucario. "Okay guys I don't know how much you heard but right now we have a fifty-fifty shot at either saving or dooming the world. I need your advice."

"… Slur! Slurpuff!"

"Lucario car car car!"

"Talonflame! Talon Talon flame flame!

"Dou! Blade blade Dou!"

Kai sighed and fell to his knees. "If only you could speak English. Wait! Where's Grenin-"

A loud thunk came from the end of the room and Kai's Pokémon all gasped. Kai slowly turned to see Greninja with his front foot on the blue button.

"Gren?" Greninja asked.

"… Ayeeeeeeeeeeeeeeeeee…" A high-pitched trailing sound was all Kai could muster.

"Lucar car cario!" Lucario critiqued.

"Gre Greninja Greninja." Greninja argued.

"You pressed it! Oh ho ho! You pressed the blue switch! Winner, winner! Congratulations! But I'm still going to activate the ultimate weapon! I know the boss promised that we wouldn't if you pushed the correct button, but I refuse to let the potential go to waste! I'll just use my remote, here! Click- click! And the power is ON!"

Kai suddenly shot up. "YOU CAN'T DO THIS!"

"Come on! Look! Look at the monitor!" Xerosic pointed to a screen at the end of the room, Kai and his Pokémon watching it in horror.

It showed a live-feed of a small town made up of a few log cabins surrounded by grass and a small wall of rocks. In the centre of the town were three tall stones on a patch of dirt. These stones shook and rose before sinking into the ground. Moments later a dirt tipped crystal erupted out of the earth. It rose high into the air as it was connected to a pedestal and wires heading deep into the ground. The crystals sides extended outwards making it bloom like a flower, and the inside contained a sharp crystal that released a bright blue and red light before the sides folded completely outwards knocking the houses over as the light dimmed down to leave a blue and red glowing crystal in the middle of the weapon.

"… Oh no." Kai whispered in horror.

"It was a dire situation. Even though Greninja actually would have saved the world, the weapon was still activated. We had… Maybe less than an hour left, there was no time left for anyone to do anything. But that didn't stop me from trying! I flew on Talonflame to the weapon's location bust down the doors on Team Flares hidden base and beat every grunt that dared stand in my way! But when I made it to the weapons core…"

A very dark room with tinted red light was empty without a soul; a single red metal door with Team Flare's logo blocking the outside world. A blue light sliced through said door making it quite naturally explode, out of the explosion Kai and Greninja walked in.

"Thanks for that buddy." Kai thanked.

"Ja." Greninja replied.

The two looked on to see the machine's core which looked more like an altar. Wires and red lights were coming off it and on this alter was a round grey cocoon with white extrusion like tree branches coming out of it.

"It's kind of hard to breathe in here isn't it?" Kai whispered as he stared in awe. "I have no idea if this is a good idea, but it's the best that I've got. Are you ready Greninja?"

"Ja!" Greninja answered confidently.

"Aim for the core and use-!"

"Rrrrrrh!" A loud roar interrupted the two and made them both walk back until they were against the wall of the room. Reinforced shielding slammed down behind them blocking their only escape as the cocoon… Began to shake and glow. A bright light burst from the cocoon forcing Kai and Greninja to shield their eyes. When they opened them, an immense fear spread through their very souls like wildfire.

Two titans stood in place of the cocoon. One was a blue and black, quadrupedal, stag-like cervine Pokémon with an eight-horned set of antlers extending out from its head, four on each side. The second was a large Pokémon with avian and draconic traits. Its body was dark in coloration and was adorned with grayish patterns along the underside. Its wings had three spikes on each extending along the bottom edges, close to where they meet the body. There were five large claws on each appendage, three of which curved inwards. Its underside was bright red, with branching, black markings and similar markings were present on its head and neck.

"Xerneas… Yveltal… They really do exist…" Kai awed in shock.

"Grenin… Ja…" Greninja admired.

They broke free of the weapon and Yveltals body glowed with a red aura as it flew into the air, Xerneas jumped down onto the floor it's horns glowing bright yellow with orange, red, purple, and teal blue twining glowing on its horns.

Kai was physically trembling. His lip quivered and he was hyperventilating at an alarming rate. His eyes were red and spawning a myriad of tears that trailed off his face.

'They're real! They're real and they're here! I didn't want to believe it before- but this is it! THIS IS WHERE I DIE! THIS IS WHERE EVERYTHING EVERYWHERE DIES! THIS IS THE END!' Kai thought desperately.

"I- I- I- I- Kai managed to sputter. "I- I don't want to die."

The two legendries cried out, Kai pre-emptively covered his face with his arms, a crash boomed in the room, wind forced Kai into the air before making him land onto the ground with a thud. Kai groaned and looked ahead where he gawked going wide eyed. In front of him Xerneas and Yveltal had locked heads. They were fighting.

"I-" Kai tried to say but the words got lost in his throat as he breathed heavily. He saw his fedora ahead of him on the floor, he felt the urge to grab it and he started crawling towards it as Xerneas and Yveltal broke apart. Xerneas made the floor snap apart as it skidded and Yveltal made harsh winds fly as it was forced into the air. Xerneas looked down at the ground then jerked it's head upwards generating a dark blue and yellow energy wave that instantly spread out, Yveltal was forced to the ground in an instant, and Kai was forced flat onto his stomach.

'It's using Gravity! I don't think I can move! SOMEONE HELP ME!'

Yveltal growled and snarled releasing a dark energy that spread out. Xerneas took the hit but shook it off easily as a blue aura fell on it's body. The energy travelled across the room and Kai braced himself.

'This is it! I don't want this to be the end!' Kai closed his eyes and waited feeling a negative force brush around his sides before stopping. Kai slowly realised he was unharmed and opened his eyes.

"Gre- Greninja?" Kai murmured when Greninja stood in front of Kai taking the hit. "Greninja…"

Greninja turned around to face Kai and he held Kai's fedora in his front feet. Kai suddenly snapped awake and felt all his negativity starting to fade away.

'Greninja protected me…' Kai started forcing himself onto his knees. 'Now what sort of trainer would I be…' Kai put his right foot forward and used it as leverage to push himself up. 'IF I COULDN'T RETURN THE FAVOUR!' Kai snatched the hat out of Greninja's feet and placed it on his head.

"Heh. Thanks for that buddy." Kai was visibly shaking; the enhanced gravity was still in effect making it difficult to stand, but he wasn't scared anymore. "Sorry about that, my emotions got the best of me. But as for right now." Kai focused on Xerneas and Yveltal. Yveltal pulled its wings forward charging a ball of red light in front of itself before firing a laser at Xerneas. Xerneas was glowing light pink and recoiled from the damage and Yveltal had a green aura over itself healing some of it's damage. Xerneas then exploded with a rainbow of colours as an orange aura enveloped its body. "We've got a job to do!"

"Greninja!" Greninja agreed.

"Now as great as we are I doubt we could beat both of them, buuut we may not have to. Just get me in close. I'll do the rest."

Xerneas' horns glowed bright white with a faint orange outline and it charged straight at Yveltal pinning it into a wall making it screech. Yveltal looked directly at Xerneas and its eyes glowed yellow, Xerneas was surrounded in a psychic trap and it lowered its head closing its eyes, its horns returning to normal. Xerneas formed a ball of pink energy in front of its face and Yveltal formed a red ball of energy. A rushing sloshing sound echoed in the room interrupting Xerneas and Yveltal when a giant tidal wave headed towards them. Greninja was riding on top with Kai wrapping his arms around him, the wave crashed into the legendries forcing them away as Kai jumped off the wave. In his right hand was a Poké ball with a purple top, two red ovals at the sides of the top and a white 'M' in the centre of the purple.

"GO MASTER BALL!" Kai screamed throwing the ball with maximum effort. It collided against Xerneas' snout with a smack before knocking itself back in the air and opening. Xerneas' body became orange energy surrounded by purple sparkles getting sucked into the ball. The ball bounced on the ground and shook three times on the spot before stopping with a click, stars appearing. Kai picked it up nervously in his trembling hand. "W- We did it… HOLY MOTHER OF ARCEUS! GRENINJA WE JUST CAPTURED A LEGENDARY!"

"Rrrrrrh!" Yveltal roared as it started flapping its wings with extreme force, managing to fly into the air. Some of the wires were damaged and released energy into the room, combining with Yveltal's dark aura to create an atmosphere of darkness not too different from outer space.

"One down, one to go." Greninja jumped down to Kai's side and nodded. "There's no way we can catch that thing with regular Poké balls so… Brute force it is! Greninja use Surf!"

Greninja summoned a wave beneath his bottom feet that rose high into the air colliding with Yveltal. Yveltal snarled attacking Greninja with dark energy making a blue aura trail down him.

"That's Snarl, guess that means special attacks are out of the window. Greninja resists it but it still did more than normal, is Yveltal that strong?" Kai looked at his dark environment and felt goose bumps. "No! It's this dark aura that strengthens its attacks." Kai smirked. "Time to use its own strength against him. Greninja use Night Slash!"

Greninja formed a dark blade in his front feet and stabbed it into Yveltal before twisting it and pulling it quickly upward dealing a critical hit. Yveltal growled and flew into the air pulling back its wings and shooting its red laser, Greninja braced himself as the attack hit.

"Greninja!" Kai shouted. When the attack settled Greninja raised his right front foot into the air. He pulled two of his webbed toes back and left the leftmost one up making it look like he was giving a thumb up. Kai smiled softly as Greninja toppled onto his side. "GRENINJA!" Kai rushed over to his friends' side and turned him over, his white pupils were white swirls as he lay there knocked out. "Greninja… You did so much for me… Thank you…" Kai returned him to his Poké ball as Yveltal loomed over him, a green aura healing the wounds Greninja dealt. "I've heard about you, you know. That move you just used, it's called Oblivion Wing. It lets you drain the life of your opponent, letting you deal damage while draining their life to heal yourself."

"Rrrrrrh!" Yveltal roared, Kai not even flinching.

"I'm telling you this because I know who you are. But I'm still gonna fight you, and I will win. Because this is bigger than you or me Yveltal. THIS IS ABOUT PROTECTING EVERY LIVING THING OUT THERE! As long as you're here you could power the ultimate weapon and I won't let that happen!" Kai threw another Poké ball. "Slurpuff, it's your time to shine!"

Slurpuff appeared from her Poké ball. "Puff!" She said seriously.

Yveltal shrouded its wings in dark energy and lifted them violently releasing a dark pulse of energy at Slurpuff who braced it like a champ.

"That was Dark Pulse." Kai groaned as he felt the force from the attack trying to push him back. "Slurpuff use Dazzling Gleam!" Slurpuff thrusted her arms to the side generating a bright pink light that filled the room and forced Yveltal back.

"Yes, a super effective hit! Slurpuff use Dazzling Gleam again!" Slurpuff thrusted her arms back and Yveltal stared at her with glowing yellow eyes trapping her in a psychic cage. "Oh no disable!" Yveltal used Dark Pulse again, Slurpuff stayed in place but was uncomfortable getting chipped away at. "Slurpuff use Energy Ball! Try to lower its special defence!"

"Sluurrr…" Slurpuff moaned silently as she tried to recover from the attack.

"A flinch! Now at all times!" Yveltal used Oblivion Wing attacking the defenceless Slurpuff, when it hit Kai was forced back from the knockback. Kai panted in place and returned a knocked out Slurpuff. "Good job Slurpuff you did plenty, now get some rest."

Kai felt drained, he could feel the energy leaving him.

'This isn't good. Just being in Yveltal's presence is draining my life, let alone any side-effects from its attacks.'

Kai threw another Poké ball. "Doublade! This is your moment!"

"Doublade Dou!" Doublade greeted as she unsheathed herself.

"Doublade we need to wear Yveltal down. This is going to be difficult but I need you to hold on okay?" Kai asked and Doublade nodded." Yveltal used Dark Pulse sending a wave of energy at Doublade. "Now Doublade! Use Protect!" Doublade sheathed herself creating a blue dome of energy to block the attack. "Great! Now keep using Protect!"

Yveltal used Dark Pulse again only for it to be blocked by Protect. Then it did it again to be met by the same result.

'All right, no more blocking, this is it.'

"Doublade use Slash!" Doublade unsheathed itself as Yveltal used Snarl, the attack landed and Kai braced himself as he felt his feet skid. A loud clang signalled what he feared, Doublade getting knocked out by the super effective attack. Kai returned her and sighed. "I'm so sorry Doublade, you did great. It just wasn't a good type matchup for you this time."

Kai suddenly lurched closer to the ground, while before was uncomfortable, now it really was difficult to breath. He started trembling in panic, until he felt his remaining two Poké balls shake on his belt cheering him on. He controlled his breathing and tightened his left fist as he threw his penultimate Poké ball. "Talonflame I need you!"

"Talonflaaaaame!" Talonflame cried out as he flew to Yveltals level.

"Talonflame use Flame Charge!" Kai commanded. Talonflame burst into flames and rushed at Yveltal tackling him and escaping in seconds. Yveltal used Snarl, Talonflame avoided it with his aerial mobility. "Now use Acrobatics!" Talonflame accelerated in an instant and bombarded Yveltal from every angle with powerful hits. Yveltal used disable blocking out Acrobatics as Talonflame made his escape.

'Come on Talonflame. Come on.' Kai chanted in thought.

"Flame Charge!"

"Taaaloon!" Talonflame attacked Yveltal again from the side Yveltal countering with Dark Pulse knocking Talonflame away.

"Fly into the air to avoid its next attack." Talonflame obeyed and flew high into the air avoiding Snarl. "Now use Fly!" Talonflame cloaked in a blue aura bombarded Yveltal with everything he had landing directly on its head. "All right Talonflame!"

"Talon." Talonflame looked to his master proudly unaware to Yveltal rising behind him.

"LOOK OUT!" Kai warned. Talonflame turned around too late suffering a point-blank Oblivion Wing forcing him to the ground. Kai fell to his knees when Talonflame hit and his eyes grew misty when he saw him knocked out. "No… A critical hit… Talonflame…" Kai returned Talonflame and rubbed his eyes. He adjusted his hat and stared seriously at his final Poké ball. "It's all on us. Everything that our family has given, the fate of the world rests on our shoulders. I never understood why you chose me that day, but I'm glad you did. Either way as soon as you come out- YOU BETTER NOT HOLD ANYTHING BACK!" Kai threw the ball high into the air with everything he had. "GO LUCARIO!"

The Poké ball exploded into light and Lucario fell on his front toes with two paws glowing with aura. "LUCARIO!" He shouted.

Kai turned to Yveltal one final time. "Sorry Yveltal but this is it! This is the final battle! GET READY TO SEE THE BOND THAT WE SHARE!" Kai pulled down his left sleeve revealing a black ring bracelet with a rainbow coloured keystone. "Keystone lend me your power…" Kai put his middle and fore finger together and pressed the keystone, he lifted his left arm up and the keystone released a powerful pink light. "Surpass evolution…" A small blue light glowed from the tuft on Lucario's chest, and an identical pink energy surrounded Lucario enveloping him in a cocoon of energy. "MEGA EVOLVE!" The pink cocoon exploded releasing a transformed Lucario.

His cream fur became longer, and his thighs slimmed down. He developed more spikes on the back of his paws, which turned crimson. He also developed spikes on both of its feet, which have become crimson too. His aura-sensing appendages grew longer, and two of them were tipped in crimson. His shoulders also possessed a spike each. His aura heightened throughout his body, forming black markings on his blue fur.

Lucario cried and wind exerted from his new form, indicated by a mysterious rainbow coloured symbol appearing above his head. He had become… Mega Lucario.

"All right Mega Lucario let's give it all we've got! Use Power-Up Punch!" Mega Lucario's paws became fists and were cloaked in a bright orange energy. He ran up to Yveltal at incredible speeds delivering a powerful punch raising his attack. Yveltal used Snarl to counter but Lucario easily dodged and delivered a second more powerful punch raising his attack even more.

"Rrrrrrh!" Yveltal screeched, as it used Oblivion Wing. Mega Lucario braced himself and took the hit, getting forced back as he did. When the attack finished Mega Lucario was left standing, but Yveltal healed some damage.

"Is that all you've got?" Kai taunted. "Lucario use Metal Sound!" Mega Lucario nodded and slammed his two spikes on his paws together generating horrendous metal scraping soundwaves that lowered Yveltal's special defence twice. Yveltal got desperate and used all of it's strength in a last effort Dark Pulse. Mega Lucario braced himself… When the attack avoided him and kept going. Mega Lucario stared in horror as the attack headed straight for Kai. He had no time to react and it landed with maximum force.

"LUCARIO!" Mega Lucario screamed as he ran to Kai. He was in bad shape. Kai's clothes were ripped, he had several bruises formed and forming and his eyes were closed. Lucario in his heightened Mega Evolution sensed more, his aura was weak… And he got angry. He turned to Yveltal with narrowed eyes growling like a rabid animal, the dark aura was surrounding Lucario and manipulating him. He readied a Power-Up Punch when something grabbed him… It was Kai. "Car…"

"Hey." Kai greeted meekly. "I'm not ready to kick the bucket just yet, I'm only fourteen." Mega Lucario felt massively relieved as he helped Kai to stand, Yveltal watching with intrigue. "Now then, I don't know how much energy left we've got but why don't you take this aura around us and use it against him… Well 'it' technically." Mega Lucario looked confused. "What? You're the aura Pokémon, aren't you? So, manipulate the aura." Mega Lucario smiled.

"Car." Mega Lucario relaxed and let Yveltal's dark aura flow around him, he let it flow into his own aura and focused it into his paws, turning his blue aura into a black and red colour. Mega Lucario slammed his paws together unleashing a wave of dark aura directly at Yveltal making it flinch.

"That was Dark Pulse. You just used Yveltal's aura to learn one of its moves, nice!" Kai complemented and Mega Lucario nodded appreciatively. "Well don't just stand there! Use Dark Pulse again!" Mega Lucario thrusted his paws out and unleashed another Dark Pulse, it forced Yveltal against the walls of the room making it flinch again. "All right this is it Lucario, you know what to do."

"Lucar." Mega Lucario ran towards Yveltal at full speed, his aura returning to its blue colour as he jumped into the air. He put his paws together and a brilliant blue light was formed.

"USE AURA SHPHERE!" Kai shouted at the top of his lungs. Mega Lucario threw the ball of condensed aura at Yveltal who was consumed in it's light. The room shook from the impact and Mega Lucario landed on the ground cautiously as Kai held his breath. Yveltal stood on the ground silently, then tumbled with a thud. The dark aura surrounding the room disappeared, and thanks to the damage from the fighting and now that essentially the batteries were removed, the ultimate weapon was losing power fast. "It's over. It's over we won!" Mega Lucario ran to Kai's side and they high fived.

"Rrrrrrh!" Kai and Mega Lucario turned to see Yveltal had gone, a loud cry signifying it's escape from flying straight upwards, to the outside world.

"You know, I've never understood how some Pokémon can run away after they've been knocked out. Can you explain that?" Kai asked. Mega Lucario merely shrugged his shoulders. Kai laughed as Mega Lucario went still, sensing an aura presence. He shoved Kai out of the way when a grey blur came out of the sky taking Mega Lucario down. "Lucario!"

Mega Lucario was knocked out, a pink light enveloped him and he returned to normal. Above him was a white long bodied Pokémon with whiskers and arms that were covered in a large amount of fur resembling whips.

"What a startling development! I never would have thought that you were actually a chosen one!"

Kai turned to see Lysandre standing before him wearing an odd golden gauntlet device on his right arm, a metal backpack that had three flying cameras connected to it, and orange visor like glasses on his face.

"Lysandre." Kai growled, as he returned Lucario.

"Kai Emblem. Never would I have thought after meeting you at Sycamore's lab or at my café that you would be the imminent threat against my beautiful world." Lysandre explained.

"It's too late Lysandre. The legendries are gone! The ultimate weapon is losing power! 'Everyone' knows you're the one responsible! YOU'VE LOST! Just turn yourself in peacefully."

"I don't believe you are in any position to negotiate. All of your Pokémon have been knocked out, and you yourself are barely standing. For me, victory is using the ultimate weapon. In order to do that, I need to reclaim the Legendary Pokémon's power and send it to that weapon once again. I'll be taking the Legendary Pokémon back now! This time, I won't lose. But first you know too much, you need to be eliminated. Mienshao…"

Lysandre's Pokémon stepped forward, Kai stepped back defensively wobbling as he tried to stand.

'So… Weak in the legs… Of course, after I win against life and death, my own body betrays me.' Kai thought to himself and chuckled. Kai felt something shaking in his pocket and he pulled out the Master ball.

"Huh?"

"What are you doing? If you had another Pokémon I would have known about it, and there's no way you could have caught one while you were in here!" Lysandre shouted.

Kai pressed the button and out came Xerneas. "Rrrrrrh!"

Lysandre staggered back shocked but regained composure. "So, THIS is the mighty Xerneas?! I expected more from a Pokémon called a legend! You desire help from people? YOU need help from a human?"

"Is that true… Do you… Want me to fight with you?" Kai asked nervously. Xerneas nodded and turned to face Lysandre. "Guess I was wrong, Yveltal wasn't the final battle. You are Lysandre, good thing I saw Xerneas' moves when it was fighting before. Xerneas use Moonblast!"

Xerneas created a ball of pink energy in front of it's head and fired it at Mienshao knocking him out in one hit.

"What?!" Lysandre reacted.

"So, this is what it's like using a legendary. It feels pretty great if I do say so myself."

"You irritating boy. Go Honchkrow!" Lysandre sent out a large black bird with a puffy white chest and feathers arranged on it's head that looked like a fedora (Kai would approve).

"And now you're sending out a Dark type. For a mad genius you're not too smart, are you? Xerneas use Moonblast!" Xerneas attacked again and knocked Honchkrow out of the sky, forcing Lysandre to return it. "Man, that doesn't get old."

"Impossible. How were you able to get such strength on your side?"

"Remember when you robbed the Poké ball factory. Well the owner was so happy he gave me a ball that captures any Pokémon in one try! Or maybe it's because I dress nice, your goons could learn a thing or two from me."

"Why… You… Pyroar!" Lysandre next brought out a Pokémon very similar to appearance to a lion. Its mane was red and yellow striped and its body was mainly dark-brown and light brown at the ends of appendages (feet, end of a tail).

"See there you go, fire resist fairy. Good job." Kai mocked as he slow clapped. "But all it will do is make your demise two turns later than expected okay? Okay. Xerneas start charging energy!" Xerneas started glowing pink.

"Just give up! Pyroar use Hyper Voice!" Lysandre ordered. Pyroar opened its mouth and roared generating powerful sound waves that made Kai cover his ears, Xerneas remained unfazed.

"Is that it? Good. Xerneas use Geomancy!" Xerneas released a rainbow of colours as it increased its special attack, special defence and speed by two stages.

"Use Hyper Voice!"

"Use Moonblast!"

Pyroar roared again, and Xerneas shot a blast of energy. The two attacks flew past each other in the air and hit their intended targets. Hyper Voice did significantly less damage on Xerneas, and Pyroar was knocked out instantly.

"What is this power?" Lysandre asked bewildered.

"The power of people and Pokémon sharing their strength with each other!" Kai answered.

Lysandre scowled and brought out his last Pokémon. "Go Gyrados!" His last Pokémon was a serpentine Chinese dragon-like Pokémon. It was mostly blue, with a yellow underbelly and yellow spots along its body. It had a three-pointed, dark blue crest on its head and four white, dorsal fins.

"No! NO! I will not let my dream of a beautiful world end here! Gyrados take my strength!" Lysandre revealed a ring on his finger with a keystone in it.

"Wait is that a-?"

"Now, Mega Evolve!" Lysandre pressed the keystone and made it shine a pink light. From Gyrados' crest came a dark blue light before it was enveloped in a pink cocoon and broke out, mega evolved.

Mega Gyrados was bulkier than its previous form. The fins on its face, its barbels, and its crest were now considerably longer. A large spike extended downward underneath its chin, and it now had a black underside.

"Xerneas use Moonblast quick!" Kai ordered.

"Gyrados use Iron Head!" Lysandre commanded.

Gyrados' body became metallic and his crest widened into a circle, charging at Xerneas head first. Xerneas however was faster and managed to fire off a Moonblast stopping Mega Gyrados in his tracks. He floated in place momentarily but gave in and fell to the ground with swirled pupils, glowing pink and returning to normal.

"Phew. That almost looked bad for a minute there." Kai said relieved.

Lysandre didn't take defeat well and threw his visor to the ground falling to his knees. "It's over... Fools with no vision will continue to befoul this beautiful world. They will go on until the only thing left to do is squabble over the remaining scraps of hope..."

Kai ignored him and went to pat Xerneas on the head. "Thanks for your help you really saved me. Don't worry I'll release you when this is all over, it wouldn't be right me keeping you." Xerneas licked Kai's cheek in appreciation. "All right, all right settle down. You're pretty lively aren't you." Kai commented not noticing his pun.

Lysandre got up watching Kai and Xerneas bonding and he scowled. "Whaugh!"

"You know humans aren't as bad as you think." Kai interrupted, making Lysandre look at him. "Yes, we are our own worst enemy: we pollute the planet, we kill each other, we make our own lives misery. But think of all the good we do: we build homes for each other, create lifesaving medicine for each other, help each other out even in the simplest ways. I'm not the most social person in the world and even I can see that. You know what I think. I think that if we focus more on what we already have, instead of what we could have. The world would be a happier and friendlier place."

"… If that were possible, all wars would have ended long ago! I can only see one future! One where selfish, foolish humans think about nothing other than themselves and steal more and more from one another... It's a tragic future! The original purpose of this device was to bring a Pokémon back to life. But the ancient king transformed it into this ultimate weapon... Hmm. When the Legendary Pokémon awakened, they took back much of their energy-their power-that had been sent to the ultimate weapon. There's not much power left... But there IS enough to use it once...

Kai got worried. "What are you suggesting?"

"Kai, the ultimate weapon is a flower that bloomed to no avail... Just like me... But this ends here! I will show what its remaining power can do!"

Lysandre pressed a button on his gauntlet that made the weapon power up and release all its energy directly upwards.

"… What did you just do?" Kai asked as he felt himself get forcibly grabbed and thrown into the air landing on Xerneas' back. "Xerneas…" Xerneas began running and started climbing the walls of the base to head upwards as if it was climbing the worlds steepest mountain. "No! NO! WAIT! WE CAN'T LEAVE LYSANDRE! HE'LL DIE!" Xerneas turned its head to face Kai's.

"I believe he's already made that choice." Xerneas responded.

"Di- Did you just?"

"Look below." Kai did as he was told and saw Lysandre staring at him before looking down at his own feet. "Humans are finicky creatures. This man's motivations have been centered on a lack of sharing resources. Though if I were to offer my help he would be too proud to take it. Do you understand?"

"I- I understand."

"Good, now hold on tight!" Xerneas accelerated as Kai held on for dear life. When they made it out Xerneas jumped just outside the towns borders as a bright red and blue light fell from the sky and crashed directly onto the ultimate weapon, making it close up and sink back into the ground, collapsing Team Flare's HQ as it did.

"After that Xerneas thanked me again on their behalf as well as Yveltal's even though Xerneas said they'd never admit it." Kai chuckled.

"And what next?" Ozpin asked from across the table.

"That's it. I released Xerneas as promised, got some fresh clothes and carried on like nothing happened."

"And no one knew of your brave efforts?"

Kai shook his head. "Not a soul, you're actually the first person I've told."

"I see." Ozpin said as he got up. "One more thing, this Mega Evolution you spoke of, why haven't you used it here?"

Kai shrugged. "I normally save it for powerful opponents or if I'm in a pinch, it's no fun otherwise."

"Well is there anything else that I could do for you?"

"Aside from giving me a loan… I just want to go home."

Ozpin started walking out of the room. "Well I don't know if I could lend you money, that is unprofessional given our relationship as headmaster and student, but I'm done with my questioning. You can return to Beacon."

"That's not what I meant when I said home."

Ozpin left the room. "… I know."

So how's that, I figured that I've been rewriting RWBY long enough might as well do it with Pokémon as well. Also here we get our first glimpse of Mega Evolution, I did have a point where I wanted to debut it but that's still far in the future so this served as a good compromise. Either way the main plot of the 'Remedial lesson arc' will begin next chapter so I hope you'll be happy for that.

Until next time this is Kallerston signing out!