A/N: I am SO going to take a risk and shove this out here alongside the Dragon Booster/Yu-Gi-Oh! 5D's crossover...and a future one later...welp, here goes nothing! I will say that I'm using the same (human) OCs like with the Dragon Booster crossover. Since I've revealed only one (plus the name of another), the names for the others are Eric (Ren's best friend), AJ (Ren's twin sister), and Jazz (full name is Jasna; more of a rival than Eric is). I'll put at the end of each chapter the characters' teams (including ones for the Yu-Gi-Oh! 5D's characters). If I manage to get up to the Alola portion of this story before November, it'll go on hiatus until I've played through the games...a few dozen times X'D I'll also mainly do this story by first person point of view unless I say otherwise (like for an important scene or anything).

"..." = human speech

"..." = Pokémon speech (translated depending on character)

Italics = thoughts

DISCLAIMER: I do NOT own Pokémon or Yu-Gi-Oh! 5D's. They go to their respective owners. I only own my OCs.

Chapter 1- Rising Concerns:

(Yusei's POV)

"Wait, you want me to come with you to Kanto?" I asked.

"Yep, pretty much," Ren replied. There wasn't a whole lot that I knew about him. Other than he had beaten the Kalos and Johto leagues before falling off the radar after four of the Kanto badges were won. The way we met was...well, he was running from some thugs that were after him and Argen and I stepped in to help (the thugs didn't even bother trying with a giant Luxray glaring down at them). Now he's straight up asked me to join him going back to Kanto.

"Why?"

"Well, it does get a bit lonely when you're the only human among a bunch of beings that literally bend the elements at will...even if I can understand what they say..."

"I get the feeling that's not the only reason."

This time, he took a look around us to make sure there wasn't suspicious eyes. Then he sighed and turned back to me. "Okay, I'm also needing someone that's strong to watch my back should something come up. Especially since it's about this." He rolled up his sleeve covering his right arm.

My eyes widened. I leaned a bit to get a closer look. "Is that what I think it is?"

"Yeah, a Legendary's mark. Or rather, Legendaries'. From what I could gather on these, this eye represents the Vast White Pokémon Reshiram-" He pointed to the dragon's eye that had flames around it. "-the Deep Black Pokémon Zekrom-" He pointed to the dragon's eye that had a lightning bolt around it. "-and the Boundary Pokémon Kyurem." He pointed to a third with ice surrounding it.

"What about the middle one?"

"I dunno. There's only three in the Tao Trio. Maybe it's supposed to represent the mythical 'original dragon' that the three had comprised."

"Is that why those thugs were chasing you?"

"More or less. The people who they're working for want to, ahem, 'protect' me from unsavory folk, but I know it's a ploy to let my guard down so they can use the dragons for themselves. Once they've reawakened of course."

"And you think I'm going to be enough to help?"

"Well, not a lot of people are able to say they won an entire tournament with only ONE Pokémon, can they?"

"You know about-?"

"Jazz likes to keep me posted on a lot of what happens here since I've been trying to keep out of this place as much as I could. Just in case there's anyone interesting to battle here. So, are you in or out?"

I thought about the offer for a few seconds. On one hand, I could build a proper team than have Argen fight all the battles. There were some close calls during the tournament since he was having to go up against not only Ground-types but other types that were resistant to Electric-type moves. On the other... "What's the catch?"

"Pardon?"

"Other than you being protected, what's the other motive for inviting me along with you? I heard you only have either close friends or family with you on these journeys."

Ren gave a bit of a shrug. "Well...like I said, I get a bit lonely for human company every now and then. Besides, I can't involve the others with me right now. Whoever these guys that are chasing me are, they're more than likely going to use any type of way to get me to come with them. Willingly or not."

"And you're sure that's the only other reason?" I looked him in the eyes to make sure he wasn't lying to me.

"I'm positive." He didn't get shifty-eyed or even tried to look away.

I sighed. "Alright. We'll come with."

He broke out into a grin. "Sweet! I'll meet you downtown in the morning tomorrow."

"Downtown? Why not the docks?" About the only way from New Domino City to any of the regions was either by boat or by plane. And out of the two, it's cheaper to go by boat.

"Don't worry. I've got an alternative way to get us to Kanto easily. Gotta meet up with my sister in half an hour right now, so I'll you see then!" He picked up his bag and one of his newer partners, a Tepig, and took off.

"Lux..?" Argen asked, looking up from where he was laying.

"I've got a weird feeling about his alternative transportation, Argen..."

"Luxray."

(Scene Shift- Ren's POV)

"What? Ren, what the hell? Asking a complete stranger to go with you back to Kanto! Are you insane?!" my sister, AJ, yelled in my ear. Thankfully, Mom and Dad were out again, so I was able to stay for the night until I could leave. I explained what happened with Yusei to her and...well...let's just say that I sometimes think I'm wrong with saying I'm the older twin out of the two of us.

"Jeez, announce it to the whole world, why don'tcha?" I mumbled, rubbing my ear.

"I'm serious, Ren. You don't know anything about this guy. And it's not because of him having been in the Facility for whatever either."

"Look, you know I can feel what people are thinking and I did when I was talking with him. He felt...I dunno, just really calm and all that. I didn't get any bad vibes from him. Not even from his partner."

"Still..."

"I know, I know. You want me to be careful I've done good this last year, haven't I?"

AJ gave a small smile. "I suppose. I just...I don't want to see you hurt again, not like with..." She stopped herself and even I fell silent for a bit. It was hard to even think about what happened...but it had. I could barely think about it without almost having a panic attack.

"Well...maybe with this guy, I won't have to worry so much about watching my back all the time. I can start taking it easy and go back to how I was."

"Okay. Just don't do anything stupid like get involved with some world-ending chaos or whatever."

"Hey, come on. Not like I can avoid these things. They always find me one way or another."

(Scene Shift- Next Day- Yusei's POV)

I waited for Ren at the rendezvous point. I don't have any clue why he'd want to meet up here rather than the docks. Was he traveling on some large Pokémon that could fly or swim? Wouldn't surprise me since a lot of the people who have Legendary's marks tend to be able to call the Legendary that their mark represented. Except...didn't he say that those haven't woken up yet?

Ren came running up not too long after I had. He bent down a little, resting his hands on his knees as he struggled to catch his breath. "Holy shit, I didn't think I could make it..." he muttered.

"You okay?" I asked.

"Yeah yeah, just kind of overslept..." He took a deep breath and straightened up. "Okay! Off to Kanto, then!"

"We're going to have to hurry if we're going to catch the next ship to Kanto. It's in half an hour." Even if we hurried, we wouldn't have the right amount of time to buy tickets unless Ren got them beforehand.

"We're not taking a boat."

I looked at him, confused. "A plane?"

"Nope."

"If we're not using a boat or a plane, how are we getting to-" I stopped when he pulled off the gold bracelet on his left wrist and held it up. "What?"

"We're going to travel via Hoopa ring."

What?! There's no way that's a legit Hoopa ring! "You're not serious, are you?"

"Totally. How do you think I can easily go from one region to the next within less than a day? Can't exactly call on the Legendaries just yet."

"But how did you...?"

"Long story, very complicated. We better get going since I've got a match against Sabrina in an hour."

...well this is certainly going to be an interesting journey... I thought as Ren threw the ring in the air. Before it could even hit the ground, it stopped about three feet above it and expanded. The inside now had a dark purple interior, much like the pictures of the rings at some of the Mirage Spots. Ren stepped through, poking his head out a moment later. "You coming?"

"Yeah, sure," I replied, still a bit dazed. He pulled his head in right as I stepped through. Before I knew it, I was standing right in the middle of Saffron City in Kanto. Thankfully, we hit a spot that didn't have people around at the moment...or we'd have a lot of explaining to do.

The ring shrunk back to its small size, hitting the ground with a small clang. Ren picked it up and slipped it back onto his wrist. "Always handy to have a portal to carry around."

"If you travel by those portals, how did..?"

"Honestly, no clue how those goons always find me. I think they must have agents in every part of the world and are told if I'm possibly in the area." He pulled out one of the Poké balls on his belt, letting out a Furret. The Furret let out a purr and then climbed onto his back, wrapping the tail and most of the body around Ren's waist. "Oh yeah, say hi to Felix."

"Furr," Felix purred.

"Hello," I replied, letting Argen out of his ball. The Luxray yawned, stretching his front legs.

"Well, time to fight against the Saffron Gym. You ready to handle this, Fel?"

"Furret!"

"Then let's get going."

(Scene Shift- Saffron Gym)

"Felix, finish this with Shadow Claw!" Ren commanded.

The Furret managed to dodge another of Sabrina's Alakazam's attacks and struck the Psychic-type with a paw covered in a dark purple aura. The Alakazam staggered a bit before falling backwards, knocked out. The screen blared a sound like a horn and showed Ren as the victor of the match.

That was...a rather quick match, I thought from the sidelines. While Ren did use more than just one Pokémon, it was still not a long match even against some of Sabrina's stronger Pokémon. That was all under five minutes, too. Not even the battles at the tournament were this quick. This is only his second trained team! Did he get this good in only three years?

"Whoo man, I was sure I was gonna crack with that Mr. Mime," Ren sighed, walking up and snapping me from my thoughts. Felix had wrapped himself around Ren again, the Furret's head resting on top of Ren's.

"Is that the reason you haven't gone to Kalos in so long?" I teased.

"Shut up." I chuckled.

"That was an excellent battle, Ren Mori," a new voice stated. We looked to see Sabrina had walked up. "Though, I wish you hadn't been so hasty through the whole thing."

Ren scratched the back of his head, wearing a sheepish grin. "Sorry. Having a late start on my journey's made me want to hurry things along so I can get to all the regions I can."

"I see...well, I hope you take care. Especially with that mark of yours." Wait, what? How did...Ren's mark is covered up! Did he tell her prior to the match? "You as well, Yusei Fudo." She walked off after that.

"Okay, how many people know of your mark, anyway?" I asked as soon as we stepped out of the gym.

"Only you, AJ, my best friend Eric, and Jazz. And my 'mons, of course. Then again, psychics tend to be able to sense that kind of energy around, so that may be why," he replied with a shrug. "Speaking of that, how come you didn't tell me you had some sort of mark?"

"I...don't. I haven't seen anything appear on any part of my body."

"Huh, that's weird..."

"Aren't you supposed to be able to tell who have these marks, anyway, Ren?"

"Ehh...not exactly. See, I can sense if someone has special powers per say if the powers are active. If no mark's come up, then I won't be able to tell. Eric could, probably, since he can actually sense the auras of people and Pokémon. We could ask him sometime and see if there's something dormant in you."

"I think I'll pass. I've already had a lot of crazy things happen to me in the past."

"Oh really? I bet mine are weirder."

"Considering what I've read in articles about you, I don't doubt that."

"Hey!"

(Scene Shift- A Few Hours Later)

We traveled out of Saffron and stopped on the route just outside of Fuchsia for the night. Ren let out not only the Pokémon he caught in Johto but his Kalos team as well. It seems he keeps a theme of having teams with mostly physical attackers, but who's to say he won't change that in the future. Still, it's interesting to see that he doesn't always use the strongest Pokémon he can find.

"Man, I'm going to be passing out before I finish the Kanto challenge," Ren groaned, falling face first onto the sleeping bag.

"Then why not slow down," I replied.

"No way! I'm already so close to finishing it! Besides, I'm already way behind as it is."

Behind..? Oh, right. He started when he had just turned fifteen, five years past the normal age. "Well, it's not going to do you much good if you get too tired to finish." I settled onto my own sleeping bag.

Ren sat up on his elbows, glaring at me slightly. "What are you, my mom?"

"Lux!"

"Ty! Tyran!"

We looked up to see Argen playing tag with some of Ren's Pokémon. It looked like Ren's Tyranitar, Mason, was it and chasing after the others. They looked to be having fun. "So, what's the story?"

"Huh?" I turned back to Ren.

"You know, of how you got Argen. I doubt you got him as a giant Luxray."

I chuckled. "Well, all right. I found him when I was thirteen, washed up on the shore of Satellite as a Shinx. It looked like he had just been thrown into the ocean to drown. I took him to where I was staying, dried him off, and cleaned him up better. He was really skittish of me at first, but I managed to earn his trust after some time. He's been with me ever since."

"Wow..."

"Your turn."

"Eh?"

"Your turn to tell me how you met Cross. Everyone that's done an article on you can't seem to make up their minds on how the two of you met."

"Do I want to know what they put down?"

"It ranges from you rescued him from falling out of a tree to catching him with the only Poké ball you had on hand."

"Pff...I'm surprised they didn't just put down that I got him from Professor Sycamore, but no. It's none of those things. Cross was actually a present from my older half-sister when I turned twelve. I couldn't start training at the normal age of ten since I was getting sick a lot. My parents didn't want to risk losing their business heir. I didn't get into any big battles yet, just some between my friends and my sister. Anyway, long story short, I got into an accident one day when I was thirteen which caused my parents to put a ban on my going out to be a Trainer. I refused to listen to them and ran away once I hit fifteen. Been out doing this whole thing for little over three years now."

"Why not tell the reporters the truth, then? Instead of them making something up."

"No point to it, really. If they hear it's some boring tale of how Cross and I became partners, they'll throw it out the window and turn it into an interesting read. 'Sides, I'm not doing this whole thing for fame and fortune."

"Then why-?"

"I want to be able to show that every Pokémon is capable of being the strongest, not just the ones that have the best stats or the best abilities or natures. If given enough time and patience, then any of them can be the Pokémon of a Champion."

Well that rendered me speechless. I was sure that by Ren's slightly cocky attitude that he was like some of the Trainers that wanted only the strongest Pokémon they could find, only going for the ones that could easily beat a Legendary without breaking a sweat. Ren, though, wasn't like that. Sure, if I had seen only his Tyranitar or his Poliwrath before getting to know him, I would have thought that immediately. Not anymore.

"Anyway, I'm hitting the hay. 'Night." He crawled into the sleeping bag and quickly fell asleep."

"'Night." Our Pokémon came back to the small camp site after finishing up their playing. Argen curled up next to where I lay while the larger Pokémon Ren had circled the site, Ren's Aromatisse climbing onto his Nidoking's head to sleep. I got into my sleeping bag and slowly fell asleep.

(Scene Shift- Next Morning- Ren's POV)

"No, stop! Stop it!"

"What are you going to do to make me stop? Huh? That's right, nothing. Because you're not strong. You're pathetic, kid."

I sat up quickly in the sleeping bag, covering my mouth to stop the yell that was about to fly out. Dammit, I forgot to take those pills again...the ones that keep that memory away...

Looking over, I saw that Yusei was still fast asleep. Argen laid next to him, the Luxray having rolled onto his back and had his back legs twitching slightly in the air. I had to suppress a laugh. It was funny to see a Luxray who could look me in the eye STANDING UP (and I'm not short; I'm at least 5' 8'') acting like a little pet asleep. Quietly, I unzipped the sleeping bag and climbed out, making sure not to disturb the others asleep. Kind of hard to step over some since Mason is a normal sized Tyranitar.

Once stepping out of the camp site, I headed to where I could hear water splashing. I bent down at the side of the creek and splashed the cold water onto my face. Five years and I still can't get rid of that incident. It seems to be coming back more and more lately. If I'm not careful enough with this...I'll have a lot of explaining to do with Yusei, I thought, splashing more water on my face. Good Arceus, this is COLD!

"TACKLE FROM BEHIND!" Felix yelled from behind me. With the force of the tackle, he landed us both in the creek.

"Felix! How many times have I told you not to do that!" I growled. He wrapped himself around me once I pulled us out.

"Hmm...I've lost count after the twenty-fifth time."

"Well, stop, 'cause at this point I'm surprise my spine hasn't snapped in half."

"Aw, come on, you're tougher than that." He patted my head with his paw while I pulled a not amused face.

I'm not so sure about that. I sighed. "Well, now I'm going to have to wake up Percy so he can get this water off. Happy?"

"Ehh...he needs to wake up anyway."

(Scene Shift- Fuchsia City)

"Alright, time to get the sixth Kanto badge! Auri, you ready for this?" I said, looking at the Xatu next to me.

"Aye aye, captain!" she replied with a salute.

"Better hope there's not a Dark-type in there," Yusei said.

"Pff, nah. I doubt they'd have one of those in a Poison-type Gym...right?" Auri shrugged when I looked at her. "Well, last time I checked, Janine didn't have a Skuntank or Drapion, so I think we're good with spamming Psychic over and over."

"And if that doesn't work?"

"If using Psychic-type moves doesn't work...then I'm screwed."

He gave me an incredulous look. "You're not serious, are you?"

"Well...yes and no...I know Janine has a Weezing which has only the Psychic-type weakness thanks to stupid Levitate. If Auri goes down, I'm going to have to cross my fingers and hope Naomi can finish up the battle."

"...remind me not to have you as my coach when I start doing Gyms."

"Hey!" Auri and Argen both snickered, trying to keep the laughs covered up with a wing and paw respectively. "Okay, wise guy, I'll show you that my plan can be fool proof and that Plan B doesn't need to take effect."

We walked into the Gym...and of course, like I've heard, there were multiple Janines all over the place. For Arceus's sake. "Of course...they ALL have to be disguised as Janine. Ah, well, at least it'll be quick to-"

"Ren, wait! Don't forget about-!" Auri tried to warn me, but I had already smacked right into the infamous invisible walls of the Gym. "..never mind..."

I backed away from the wall, turning back to them while holding my nose. "I dew I forgof somefing..." I muttered, my voice and words sounding weird with me holding my nose.

Normally, I'd find this hilarious...when it happens to someone other than me...or if this happens while I'm by myself. Now? Nope. And of course, Yusei, Auri, and Argen started laughing after I talked. "Ohh, fook you guyz!" I growled, only making them laugh harder.

(Scene Shift- Two Hours Later- Yusei's POV)

"Come on, I said I was sorry," I told Ren after we got out of the Gym. He's been ignoring me since the earlier incident of him running into the invisible walls.

"Hmph," he pouted, still not talking.

"All right, fine. Suit yourself." He's being childish, I reasoned. Still, at his skill level in strategy, he'd be able to easily take on some of the tougher Trainers back in New Domino. If he'd stay longer than a day, that is. "Well your next Gym badge is in Cinnabar, right? We better catch a ferry to there."

"Err...that might be a bit hard to do.." he finally spoke.

"What do you mean?"

"Well...Cinnabar's been...err, blown way by a volcano."

I glared at him slightly. "Now you tell me."

"Sorry! It slipped my mind! But thankfully, the gym's been rebuilt in a sense. It's just going to take a bit longer to get to. Besides, I've heard Blaine hasn't been doing scheduled matches because of the relocation, so we can just pop in at any time for the battle."

"If you say so. How far are we backtracking?"

Ren pulled out his electronic map. "Hmm...looks like the only ferry that can get us to the Gym's location is in Pallet Town. If we take the train from here to Pewter, we'll be able to reach Pallet by tomorrow morning at the latest."

"Well, let's get going then. The next train leaves in half an hour."

"Shit! I forgot! Let's hurry then!" At least that's got him motivated.

(Scene Shift- Viridian City)

We managed to catch the train to Pewter City before it departed (I swear Ren had just about passed out once getting into his seat). Once there, we stocked up on a few items and then headed into Viridian Forest. Ren had already went through once, so he knew the shortcuts to get through quickly. The sun was only beginning to set when we got out of it.

Ren went off to book a room at a hotel while I sat back with Argen. Argen had his head in my lap, the rest of his body laying off the bench. I gave a sigh. "I'm so confused right now," I said aloud.

"Lux..?" Argen asked, looking up.

"Sorry, just talking to myself." The look in his eyes told me he wasn't buying it. "I don't know, I've heard that he, Ren, doesn't usually invite people most of the time when he's traveling. So to ask a complete stranger is a bit confusing." Argen rolled his eyes. "What? Would you like it if we were going with someone that we had no information about?" He gave me a hard look. I sighed. "Yes, I realize that's the same in our situation, but-"

"Lux!" Argen put his paw on my face, his way of telling me to quit talking.

"Really?"

Argen put his paw down and grinned. Then he got a stern look on his face. "All right. I'll talk to him about it once we get a hotel room." He gave a nod at that, settling back to laying down. But, in the short two days since we met, I've found that Ren's easy to talk with compared to other Trainers that go out to travel the different regions. He may not seem to take the Gym challenges seriously, but once the battle starts, he switches to focusing solely on that, making sure to know when to attack and what attack. It's not just Gym battles either. Any battle against any opponent and he becomes a different person. Sure, he takes it easy on opponents that are at lower levels, but for the most part he goes for the quickest route to defeat opponents. And he tends to be impulsive whether he's focused on a fight or not

My thoughts are soon cut off when I heard Ren walking up. "Ugh, man, seems like everyone's coming to Viridian now..." he muttered, rubbing the back of his neck.

"Did you get a room?"

"Yeah, but it looks like we're going to be sharing a bed. It was the only one open."

"That's fine. Our Pokémon can sleep in their balls for a night."

"Slightly wishing we hadn't listened to the weather report on the train..."

Once there, Ren led the way to the hotel room. It wasn't small, but it wasn't that big either. Ren set his stuff down and immediately called claim to the shower first. At least that gave me time to think of how to word my thoughts to him carefully. Just got to hope I don't offend him by accident.

(Scene Shift- ?)

"Well? Any luck?"

"No, sir. We couldn't capture Ren Mori."

"That is...unfortunate. I was hoping we could convince him to join the cause. Someone with a Legendary's mark of the three dragons would be beneficial. I suppose we'll stick with the original plan. And if he does come here...we'll have to take a more direct approach in getting him on our side."

A/N: ...hope this chapter was a good read! ^^' Still trying to nail personalities right, tbh...and the team's list for my OCs will reveal Pokémon yet to be shown in the story...I guess for that I'll put in Italics which ones have had an 'appearance' so to speak or mentioned ('cause Ren did have all of them out; they just weren't all listed). I'll say that once the region is changed, Ren will leave his other teams at his half-sister's ranch.

TEAMS:

-Ren: (Kalos) Cross (Delphox; Quirky Nature), Mason (Tyranitar; Hardy Nature), Ciel (Furfrou; Adamant Nature), Charlotte (Gogoat; Lax Nature), Spirit (Aromatisse; Calm Nature), Zach (Nidoking; Brave Nature); (Johto) Naomi (Typhlosion; Hasty Nature), Felix (Furret; Brave Nature), Ivan (Venusaur; Docile Nature), Ashley (Nidoqueen; Docile Nature), Percy (Poliwrath; Brave Nature), Auri (Xatu; Relaxed Nature)

-Yusei: Argen* (Luxray; Jolly Nature)

*Slightly based on two Luxrays I've trained in two different playthroughs with the same nature; also, to put his height in perspective, he can look Yusei or Ren in the eye standing up. So yeah, a LOT bigger than normal.