Poni Island - Battle Tree

A week after the defeat of Team Rainbow Rocket, the Alola region is finally saved. But of course this is not the end, the heroes responsible for the defeat of Team Rainbow Rocket continue training to further improve their skills, right now they're in Poni Island, and further north lies a huge tree, but this is not an ordinary tree, this tree is used as a battle facility similar to Battle Frontier in Hoenn and Sinnoh region. And right now four trainers are facing off against each other, on one side is a boy and a girl, the boy wearing a red hat, a light blue tank top and white pants with blue trimmings, the girl wore an orange top with flower pattern and short pants, and braided hair. On the other side are two boys facing them, one boy is having a spiky orange hair wearing a black shirt with green pants, while the other one is wearing a red hat, white and red colored shirt with blue jeans and a Pikachu on his shoulder.

"This is it Selene, our 50th battle ! Once we win this we will beat the battle legends !" Said the boy enthusiastically.

"I know Elio, all of us only have one Pokemon left, we won't lose after going this far !" Replied the girl.

"Amazing ! To think they manage to corner us like this, don't you agree Red ?" Asked the orange haired boy.

"Yeah I agree, if anything they remind us when we were their age, luckily for them they don't have your arrogance and condescending attitude Blue." Teased Red.

"You'll never gonna let that go will you, I get it I was young and foolish back then !" Said Blue annoyed by Red's teasing.

This is the last round of the multi battle with Elio and Selene vs the battle legends Red and Blue, Elio and Selene remaining Pokemon is Incineroar and Primarina, while Red and Blue remaining Pokemon is Charizard and Rhyperior. This is the deciding moments as Pokemon trainers as the champion of Alola vs the living legend Red and Blue.

Red mega evolved Charizard into Mega Charizard X and use dragon rush to attack Incineroar, but Selene ordered her Primarina to use Misty Terrain, enveloping the battlefield with mist and weakening dragon type attacks, causing Incineroar to only suffer minimum damage, Blue ordered Rhyperior to use rock slide, summoning rocks from above to attack Incineroar and Primarina at the same time, hurting them but Incineroar suffers more damage. Incineroar got up and picked up the rocks and throw it at Mega Charizard and quickly dashed to Rhyperior and use cross chop, giving super effective damage at both, Mega Charizard got back up and attack Incineroar with air slash, further hurting it, and when Rhyperior proceed to attack Incineroar Primarina attack from a distance with sparkling aria, the powerful attack hurt Rhyperior even further, knowing it's health is getting low Rhyperior use rock wrecker to attack Incineroar. Incineroar is defeated, but usimg rock wrecker ended up causing Rhyperior unable to move, Incineroar's defeat just leaves only Mega Charizard and Rhyperior vs Primarina, with Incineroar defeated Selene is on her own, but she won't give up, she used her Z Move the Primarium Z transforming Primarina sparkling aria into oceanic operetta, Primarina summon a huge bubble of water above it's head and aiming it at Mega Charizard and Rhyperior, it sings further to burst the bubble, harming both Mega Charizard and Rhyperior from the massive explosion, the powerful attack left them defeated. And so the winner of the multi battle format is Elio and Selene.

"Elio we won !" Exclaimed Selene. "Even though I got the arena and all of us soaking wet."

The two of them get excited and congratulate each other for the victory. And on Red and Blue side they also congratulate Elio and Selene on their victory.

"Wow that was impressive, to think that we lost, you guys really prove yourself an amazing trainers." Praised Red.

"Yep, you two are the real deal alright I'm glad we decided to come to Alola, there's a lot of talented trainers out there in the world." Blue agreed with Red.

"Thanks it means a lot coming from legends such as you." Said Elio a little nervous.

The four of them exit the Battle Tree and coming down to the base of the tree.

"By the way that Pikachu, you're not putting it inside a pokeball ?" Asked Elio.

"Nah, Pikachu doesn't like being inside a pokeball." Answered Red.

"You know, you and Pikachu seems really close." Noticed Elio.

"Yeah we go way back, in fact he's my partner when I first become a trainer." Reminisced Red. "So I hope you cherished your bond with your Pokemon, they will make great companion."

"So Elio you came from Kanto right ?" Asked Blue.

"Yes, but I moved to Alola because of my parents work." Explained Elio.

"What about you Selene ? Are you from Alola as well ?" Asked Red.

"No, I'm also not from Alola, I came here from another region, but many things happened and here I am." Explained Selene.

"Oh yeah, when we have to deal with team skull, infiltrating the Aether Foundation, defeat Ms Lusamine there, and save Ultra Megalopolis from Necrozma, man you wouldn't believe the things we went through." Explained Elio.

"No, actually we believed you, we went through a lot of things ourselves." Said Red.

But before Red can talk further they hear a sound of clapping from the Battle Tree entrance. A figure came out from the entrance revealing a young woman with long brown hair wearing a little black dress and a high heel shoes, she looks about the same age as Red and Blue.

"Ehe, I watched your battle and it completely blow my mind, to think you two actually defeated, I must say you two kids are amazing." Said the woman.

"Yes, they prove they got what it takes, and besides no one wins all the time even you should know that Green." Said Blue.

"I know Blue, even I have my fair share of defeat once in a while, anyway allow me to introduce myself, my name's Green, I came from Kanto with Red and Blue, I also called here to participate in the Battle Tree, but since I insist on looking around Alola I arrived at the Battle Tree later than planned, sorry about that." Explained Green.

"Oh it's nice to meet you Green, my name is Elio and this is Selene." Said Elio introduced himself.

"I know, your Alola's first champion right ? So young and a champion already, you're just like Blue back then but with a more pleasant personality." Teased Green.

"Seriously does anyone ever gonna let it go !" Said Blue embarrassed.

"So I take it you're known Red and Blue for a long time then ?" Asked Selene.

"Hehe we go way back, and have tons of adventures together, why I remember at the time we're at Cinnabar Island beach when Red and Blue declares their feelings towards me and ended up fighting over me." Said Green.

"Huh ! Does that really happened ?" Elio and Selene embarrassed hearing Green's statement.

"No that never happened ! Green stop telling lies, honestly we're in our late teens already and you're still as devious as ever." Said Blue annoyed and blushed at Green's teasing.

"Haha sorry, but look at you two, all grown up to be handsome young men." Green stand in the middle of Red and Blue with her each her left arm holding Blue's arm and right arm holding Red's arm. " I can feel the jealous glares thrown at me."

"Uuh does she always like this ?" Asked Selene nervously.

"Yes, pretty much all the time, and sadly she hasn't changed this part of her at all." Said Red as he and Blue remove their arms from Green in order to avoid bringing further attention to themselves.

"Well it's nice to be here but tomorrow it's time for us to go back to Kanto, we are only here for a week after all." Lamented Green.

"Hey why don't we go to Seafolk Village first, there's a good restaurant there." Suggested Elio.

Everyone agreed and they head back to Seafolk Village.

Poni Island - Seafolk Village

"I got to say that Poke Ride is sure is convenient, especially the Charizard one." Remarked Blue.

"It's said to be one of Alola's customs, having Pokemon cooperating side by side with humans, you're also flying with your Pidgeot and Charizard to get here." Said Elio.

"We did go way back, Charizard and I, and Green would you let go of me now, we landed on the ground already." Said Red nervously.

"Oh you're no fun, I want to hug you some more, honestly Red you were easier to tease back then." Replied Green.

Green let go of Red and they enter the restaurant boat. The ordered their meal and start eating.

"Whew that's a good noodle." Praised Blue.

"So Green, you've won your match ?" Asked Red.

"Yep, since you two are currently in the multi battle format, I'm the opponent at the double battle format." Explained Green.

"I can imagined the devious combination you've come up with, I feel sorry to those who had to face you." Replied Blue.

"Oh, he's actually pretty good, just a bit more luck and he would've beat me." Said Green.

"So since you're from Kanto are you familiar with Team Rocket ?" Asked Selene.

"Yes, in fact Team Rocket is defeated because of the three of us." Answered Red. "But I do heard rumors they're back."

"Well it's true, Team Rocket was just here, but they called themselves Team Rainbow Rocket now, and they gather some evil team leaders from different worlds." Explained Selene. "And it seems they come from a world where they're succeeded in achieving their goals.

"I see, I guess Giovanni never did abandoned his dream of world domination." Said Red.

"No he doesn't, and he came here because he wants to have an army of Ultra Beast under his command." Replied Elio.

"Ultra Beast ? Those are what you call the Pokemon in other dimensions right ? Said Green." I would be lying if I said I didn't want to see one."

"Me too, but we can't let him unleashed something so dangerous and unknown to this world, if only we arrived sooner, we could've helped you take down Team Rocket once again." Said Blue.

"Thanks for your offer, but we managed to defeat them, we also got a lot of help from our friends and allies during their takeover of Aether Foundation." Said Selene.

"You sure do, the people of Alola can take care of themselves just like us from Kanto." Agreed Red

"But you know Red, Giovanni seems really serious about this, I mean he did gather the leaders from evil organizations in other regions." Said Green.

"Yes, but in this world they're all defeated thanks to our well 'juniors'." Said Red.

"True, once you got a hold of a Pokedex and boom, you got involved in a large scale battles that decides the fate of the region, or the world." Blue agreed with Red's statement. "It sure seems this happened to anyone receiving a Pokedex."

"Well anyway for now Giovanni is defeated, but should he be back, we will stop him like we always do. Elio, Selene we'll be in touch." Said Red. "Okay everyone, I think it's time to go back to Hano Grand Resort.

"Hano Grand Resort ? Is that where you're staying ?" Asked Elio. "But that hotel is always busy, people have to make reservations years in advance."

"Yes, and it's an amazing place, but thanks to us being called to promote the Battle Tree, the manager pull some strings to reserve a room for us." Answered Red. "Well it's nice while it lasted, but I guess now it's time to say goodbye."

The five of them walked out from the restaurant and started saying farewells to each other, but then one of Elio and Selene's pokeball seems to shake uncontrollably.

"Huh ? Solgaleo what's going on ?" Asked Elio panicked.

"Lunala what's wrong ?" Selene also confused.

Solgaleo and Lunala forced themselves out from the pokeball and pointed at the direction of the Altar of the Sunne. Of course since the people at Seafolk Village already seen stranger things like when they're attacked by Ultra Beast they're not surprised with Solgaleo and Lunala in public.

"Is that the legendary Pokemon of Alola ? Solgaleo and Lunala, the emissary of sun and moon respectively ?" Said Red surprised.

"Yes that's right, Elio there might be something happened with the Altar of the Sunne we should go check it out." Said Selene.

"Got it ! Come on Solgaleo, let's go." Elio jumped Solgaleo's back and ready to fly to the Altar.

"Lunala us too !" Selene does the same.

"Wait ! We'll come with you, we can't pretend there's no crisis and just leave." Said Red.

"But !" Said Elio tried to dissuade them.

"No buts ! We can't call ourself legends if we refuse to lend a helping hand to our juniors, we're coming and that's final !" Demanded Blue.

Elio and Selene relent and allow Red, Blue, and Green to hop on Solgaleo and Lunala, and they fly to the Altar of the Sunne.

Altar of the Sunne

Solgaleo and Lunala returned to the pokeballs. They arrived on a huge altar with a sun emblem on it, and once they reached the top they saw a bipedal white cat Pokemon with long purple tail standing in front of the Ultra Wormhole.

"Mewtwo !? What are you doing here ?" Said Red surprised and so are Blue and Green.

"Wait ! That Pokemon, Giovanni used it against us !" Said Elio.

"What ? Is that true Mewtwo ?" Asked Red baffled by the revelation.

"Yes, I'm sorry it has to be like this, Giovanni managed to captured me, and now I have no choice but to obey him, and my order is to stop anyone from entering the Ultra Wormhole." Answered Mewtwo with it's telepathy.

"So Giovanni is back, and what does he want with the Ultra Wormhole ?" Asked Blue. "Is it the Ultra Beast !?"

"I'm sorry, I'm not allowed to answer, If you want to stop him you must get through me, as I cannot disobey my trainer's order." Said Mewtwo lamented it's condition.

"We understand, everyone we must fight Mewtwo and stop Giovanni from whatever he is doing !" Red rallied everyone.

Everyone agreed and prepare for battle, Red sent Pikachu to battle, Blue sent Pidgeot, Green sent Clefable, Elio sent Lycanroc midday form, and Selene sent Lurantis. Pikachu used thunderbolt, but Mewtwo setup light screen to minimize damage from special attack, Blue mega evolve Pidgeot into Mega Pidgeot, and Clefable used Moon last to attack Mewtwo, but Mewtwo fly to avoid Clefable's attack, however Mewtwo failed to notice Lycanroc rock slide, which caused him to get attacked by the falling rocks from above and Lurantis used solar blade to attack Mewtwo, but Mewtwo teleport to avoid Lurantis attack, he used Psychic to telekinetically lift the rocks from rock slide and throw them at everyone, but before it can hit anyone Clefable used reflect, creating a pink colored force field to protect everyone. Mega Pidgeot use hurricane, creating powerful whirlwind to attack Mewtwo but thanks to Mewtwo powerful psychic power it cuts the hurricane with it's telekinesis, unexpectedly Clefable and Lycanroc hide inside the hurricane with light screen shaoed like a cube to protect them, and then Lycanroc used stone edge to attack Mewtwo, surprised by this outcome, Mewtwo got hit by the stone edge and soon followed by Pikachu's volt tackle, but Mewtwo used Barrier to protect itself, Mewtwo then use recover inside barrier to heal itself and calm mind to increase it's psychic power, Mewtwo removed the barrier and use it's powerful move psystrike, Mewtwo create a huge psychic sphere and throw it to the five pokemons to attack all five of them in one fell swoop.

"Everyone !" Are you ok !?" Worried Red.

"They're fine, but I don't think they can keep this up for much longer." Said Blue. "But how is that possible ? It's like Mewtwo have more than four moves."

As things look bleak, the space around the altar began distorting.

"So it is time then, I see the plan is a success." Said Mewtwo as he retreated to the wormhole.

"Wait Mewtwo, where are you going ?" Red demanding answer from Mewtwo.

But then dimensional distortion is getting stronger for a while, opening further rifts in time and space and enlarging the ultra wormhole, after that everyone in the altar disappeared, swallowed by the rifts.


And that is it for this chapter, this chapter is is about the Pokemon world, and I'm this story takes place after USUM episode RR. The protagonist is using the Ultra Sun and Moon Game design.

And that's right everyone, I decided to make Green, the female trainer a canon character in this fic, and she also a battle legend alongside Red and Blue. As for her characteristics I will be following from the manga, where she's the cunning and devious kind of hero.

Now as for the Pokemon battles I won't be using standard rules and limitations in the game like flamethrower can only attack one Pokemon enemy, I won't be limiting it to just that because flamethrower can be used to attack multiple enemies with proper application. I will incorporate freedom and practical application for Pokemon moves, making it flexible and more use than just fighting.

And to answer the review from ZygardeFusion, about 'four others'. you asked if there's four more worlds until it comes together.

If what you mean is the previous authors note, then the answer is no, the 'four others' that I meant is the next 4 DLC characters after Joker, not four more worlds until it comes together, I'm still not sure if I want to put DLC characters in it, because I'm afraid I may have to retcon my previous chapters.

In fact, it's one more world and then the real crossover happens. But just to give you a heads up starting next chapter, there's going to be a huge surprise, or a deviation. Some of you might be disappointed or maybe rejoiced by the unexpected twist, but I already decided where things are going and I'm gonna stick with it. Until then.