In order to conquer the multiverse, Kugai Kudo, founder of the Black Bohdi Tree pulled miscellaneous heroes from across the multiverse and placed them in randomised teams in order to maximise their combat data that could be recorded and defeat their allies once his invasion began. But his 10th and final experiment lineup proved far too much of a wildcard in the end, with Kugai's ambitions being thwarted before they could begin. All the people he had abducted were returned to their normal lives, all memory of their adventures in his world vanquished from their minds. We will now tell a few of these stories, to ensure that they are not forgotten.

This exploit will focus on Team 2, also known as Team Milestone. They are Captain Marvelous - Kaizoku Sentai Gokaiger's Gokai Red, Tsukasa Kadoya - Kamen Rider Decade, Sougo Tokiwa - Kamen Rider Zi-O, Nobuo Akagi- Hikonin Sentai Akibaranger's AkibaRed and Daichi Oozora - Ultraman X. Their enemies were Damaras of the Space Empire Zangyack, Narutaki in the guise of Dai-Shocker's Oberst Zol, Schwartz of the Time Jackers, Toei creator Saburo Hatte and the Void Monster Greeza. But this takes place as the battle with evil was brought to an end.

Kugai appeared to the group, his face cloaked to prevent any of them - in particular, Tsukasa - from recognising his true face. "The good news for you is that your war is over. None of you will have to fight your old enemies anymore."

Daichi, Sougo and Akagi were quick to begin cheering, but Marvelous was more cautious. "Whenever so,etching like this happens, it's never anything good."

"Especially since it's from the mouth of a god of some kind.", Tsukasa continued.

"Very perceptive, heroes with the power of legends.", Kugai chuckled. "Unfortunately, you cannot give me the results I desire through your battles. Your experiement has been terminated." Daichi tried to react by pulling out his X-Deviser, but it was shot out of his hand and damaged.

"Watch out, Daichi!" X's essence left the damaged device, leaping into the body of his host in an attempt to shield from the encroaching beam. But it was futile, as the beam made contact, with Daichi and the others vanishing into a white light…

Tsukasa on the other hand, awoke between the unique portals only he could create - Aurora Curtains, as some had named them. All of them showed crisis where his aid could mean the difference between the triumph of good or evil. A man in a white uniform having his Drover and item stolen by a guy in a gaudy green outfit, a figure dressed in what looked like a potato sack having visions of scenes he shouldn't, a man in a suit jacket over a hoodie engaged in a real estate contest with a man in a cream version of the same attire, but with a sweater instead of a hoodie… but he had something more pressing in mind. Getting back into the world of Dark Bo to stop whatever their leader was planning. He couldn't get in on his own, as if someone had had the dimension walls filled with cement. Until one day, the wall seemed to crack, with Tsukasa being pulled in by a mysterious force.

… the one thing he didn't expect was who he came face to face with. "Narutaki.", he commented with some boredom. Their ld song and dance became tiresome at some point. "What do you want?"

"I've seen what Dark Bo's leader is planning.", Narutaki answered. "An army of the worst villains in creation, all gathered together to bring everything under their thrall. This world is beyond saving, you must destroy it, Decade."

Tsukasa was intrigued by this idea. "Super Sentai, Kamen Riders, Ultramen - looks like they're all depending on me alone to save them. How ironic."

"Not just you.", Narutaki barked. "There are others who've been trapped in the battle experiment that you were placed in. You have to recruit and prepare them for the assault on all of creation. They are the last hope of stopping Dark Bo, as is this location, hidden at the furthest point in this artificial world." Tsukasa walked up to a window, looking out to see the Earth down below. "Here on the Moon, you won't be found for a long while. As for me, I'm resigning from Dark Bo." Narutaki then vanished into a dimension wall, leaving Tsukasa with a screen that showed him a view of the current team in the experiment, being confronted by the cloaked figure.

"Guess it's up to me now.", Tsukasa sighed. "Well, I get the gist of it." As the figure opened a dimension wall to banish the 5 back to their native universe, Tsukasa opened his own in front of it, instead bringing the 5 to the Moon. "Home sweet home.", he commented to them.

"T-this doesn't look like Europe.", one of them, a young man in medieval clothes stated. "Are we… in heaven?"

"No, just above the ground, on the Moon.", Tsukasa remarked. "I pulled you out of being sent home so we can fight to actually save the world." I am -."

"The Destroyer of Worlds, Decade!", the one person that Tsukasa recognised - Yusuke Godai - spoke up. "I should've known you'd have something to do with this experiment." He then summoned the Arcle and triggered his transformation into Mighty Kuuga. "Henshin!"

As Godai ran in to attack, Tsukasa pulled out his Neo-DecaDriver and card. "Henshin!" KamenRide: Decade! After donning his own suit, Tsukasa engaged Godai in battle, dodging his punches, before managing to knock him back with a kick to the chest. "Looks like it's time to try out this one." He took out one of several new cards that he had been given in his iteration of the experiment, but never used much. KamenRide: Zero-One! He shifted into a black suit with a large yellow grasshopper appearing and 3£ printing itself onto his body as armour. To-Bi-A-Ga Rise! Rising Hopper! A jump to the sky turns to a rider kick. In his new form, Tsukasa leapt away from Godai around the room.

The fight was then put to a stop by Knight wielding his sword. "I think we were brought here to fight against the one who brought us to this world, not this guy.", he stated. But then he turned to Godai. "You got that."

Godai sighed. "Sorry about that. It's sort of a force of habit for Riders to react to this guy with hostility. I think we can work together."

"Right.", Tsukasa nodded. "Because otherwise, you'll be going home to a world ruled by Kugai."

"Just a minute.", the American among them - Zack - spoke up. "Where are we supposed to train?"

Tsukasa gestured to a large white room. "I think he's saying that should be adequate for us.", Jiro spoke for him. "We'd better make a start."

And as the group spent a few days training by sparring against each other, Tsukasa observed the next group, while reading up on their respective worlds, thanks to some files that had been left behind. He saw something interesting in the file of one Gosei Knight, which intrigued him. So when the time came to recover them - which proved much sooner than anticipated- his first thought was to say to him. "Hey, Headder. I've heard you have some kind of time travel ability card."

But before the conversation could continue, both OOO and Raia blurted out. "The Destroyer of Worlds, Decade!" The pair then summoned their respective belts and transformed. "Henshin!" Taka! Tora! Batta! TaToBa! TaToBa, TaToBa!

KamenRide: Decade! Tsukasa swiftly dodged their blows. Swing Vent! "Want to play difficult, huh?", he asked as he pulled out a keypad-like device. K-Touch 21! He then inserted a card and dialled all the buttons. Double! OOO! Fourze! Wizard! Gaim! Drive! Ghost! Ex-Aid! Build! Zi-O! Zero-One! Final KamenRide: Decade Complete 21! As he completed his transformation, he took out his rival's DienDriver and another of his new cards, loading it. KamenRide! Vice! "This power works best in two."

Tsukasa then fired the weapon, summoning a copy of the card's subject. "Kamen Rider Vice, has arrived!", he announced. "Now then, let's make this fight seem descriptively cool for the readers."

"Right.", Tsukasa nodded as he restored the main segment of the Neo-DecaDriver to the front of the belt and inserted a new card. KamenRide: Revi! A giant spectral stamp appeared and covered Tsukasa, transforming him into a pink and blue T-Rex themed Rider. Ohin! Shonin! Rollin'! Goin'! Kamen Rider! Revi! Vice! Revice! "Let's finish this in one shot." He pulled out the Revi Vicelasher and used it to slash his two opponents back. Revi Vicelash!

But before the blow could make contact, Kaoru Shiba and Gosei Knight leapt in, using their swords to stop the fighting. "If this figure brought us here, then surely we shouldn't waste time fighting him.", Kaoru pointed out.

"Right.", Gosei Knight nodded. "And I believe you wanted to ask me something."

"Right.", Tsukasa nodded as he and the other two reverted to normal. "Dark Bo kicked you out of their experiment, so I've brought you back into their world so you can fight them. As for you, I need to recover two of the teams before yours, and Gosei Knight knows of a way for me to go back and recover them."

Gosei Knight was shocked by this statement, instantly recognising what he was referring to. "Timetravel? Yes, I have that Gosei Card." He took the card out, as if to demonstrate this. "However, it was forbidden for good reason. The only Gosei Angel known to have used it was horribly mutated by the energy given off."

But Tsukasa took the card. "I get the gist of it. Perhaps it might end my journey here. Or it'll be what we need to increase our motley army." He inserted the card into his Driver, closing it. AttackRide: Timetravel! A portal opened, which Tsukasa stepped through, arriving back around the time the group of subject before him - 01, RyuRanger, Juspion, Spider-Man and Yoko Nakashima were facing the Terraphaser. "So, I'm back at when these guys were here." Tsukasa watched as the group defeated their enemy in that battle, and subsequently banished. "That's my cue." He opened the dimension wall in front of the portal to send them back, sucking them closer to him. "There, now we can go."

But unfortunately, he'd forgotten one of the group was a Rider. "The Destroyer of Worlds, Decade!", Zero-One growled as he took out his Progrisekey. Jump! "Whatever you're up to, I won't allow it. Henshin!" Initialise! Realising Hopper! A rider kick to the sky turns to take off toward a dream.

As Aruto ran in, Tsukasa tried out another new card. KamenRide: Gotchard! SteamHopper! Tsukasa transformed into a steam train/grasshopper hybrid that attached onto a grey and black body and ran forward to disable Zero-One. "He'll be alright.", Tsukasa assured his allies. "Now then, can we just talk."

"We're all ears.", Yoko nodded.

And so, after a lengthy explanation, Tsukasa brought the original team back to the present. "You've been gone a while.", OOO noted. "The next team's about to be terminated."

Tsukasa was mildly shocked by this. It seemed that the time travel card warped time on both sides of the portal. "So you want me to go recruiting them?", he surmised. "I get the gist of it." He opened the portal, summoning the next group, which included Red Turbo, Blue Dolphin, MagiYellow, Chameleon Green, Valiant Ninja Reiha and Black RX. "Alright, welcome to our burgeoning army to fight the people who brought us he-."

"The Destroyer of Worlds, Decade!", RX growled. "I won't let you have your way with this world!" He then generated his own belt, the Sunriser. "Henshin!" An a flash of lights, he was transformed. "I am the Child of the Sun, Kamen a rider Black! R! X!"

"Good grief.", Decade sighed as he took out another new card, using it. "I haven't even had time to undo my transformation." KamenRide: Saber! Brave Dragon! Rekka Issatsu! Yuki no Ryu to Kaenken Rekka ga majiwaru toki, shinku no tsurugi wa aku tsuranuku! In his new form, Decade wielded the Kaenken Rekka.

"Revolcane!" RX summoned his own sword, with the two Riders briefly sparring. "It's nice to see that you're still as strong as ever.", RX commented after a few minutes. "Thanks for saving us, Tsukasa-san." The members of Teams 3 and 4 sighed with relief at this.

"Don't mention it.", Tsukasa said as he reverted to human for the first time in a few minutes. "Now then, would you and your friends talk with the others on training yourselves for a bigger battle."

As Team 5 did that, one of them - the girl who transformed into Blue Dolphin - noted a blinking light on a computer screen. "Is that important?", she asked.

"From what I can tell, it informs us when a new iteration of the experiment is beginning.", Kikaider answered. "Which means we'll need to monitor them until their iteration is over. If you'll flick the blue switch, we'll see who this lineup is."

The girl complied, with Tsukasa seeing that the new lineup consisted of Gokai Red, Kamen Riders Zi-O and Fourze, with the three Akibarangers on standby. "So, that should make my next job easier."

"Don't tell me you're going to go gallivanting through time again.", PatrenSangou sighed. "We're barely holding together as it is."

"Don't worry.", Tsukasa assured her. "I'm only going back to get one person."

And sure enough, Tsukasa went back to his team's banishment to retrieve the one person who hadn't been brought back for this experiment. That being Daichi. But before that, he used the "back door" that Narutaki had used to smuggle him in there to travel to another universe and pick up a spare transformation device for an Ultraman, before taking Daichi back to the then-empty moon base. "Well, I almost thought I'd lost you back there. I guess you can't always believe your eyes."

"Tsukasa?", Daichi said, confused by his situation. "How did we get here? Where are the others?"

"As of right now? Currently, they're going through another experiment, but we've been replaced with two girls and a high school kid.", Tsukasa explained. He then handed his ally a white gun and what looked to be a fancy white USB. "I saw your X-Deviser take some damage back there. I think you'll need to use this in the future."

And talking of the future, Tsukasa and Daichi returned to it, just in time for Team 6 to conclude their experiment. "Where'd all these people come from?", Daichi asked.

"Explanations later.", Tsukasa assured him. He then turned towards Blue Dolphin, who was observing the computer. "How's Team 7 doing?"

"They!re about to defeat their villains.", she assured him. "Which means they should be up for banishment in a few minutes."

And sure enough, as Zi-O used his combined swords to defeat his chosen enemy, Another Ohma Zi-O, Dark Bo's founder appeared to banish everyone, a chance Tsukasa used to pull them all up to the moon base, which one of them recognised. "The Rabbit Hutch?", Fourze said, confused.

"So that's what this place was.", Tsukasa commented. "Now we've got someone to show us around."

"The Destroyer of Worlds, Decade!" Tsukasa turned to the source of this voice, but it wasn't Zi-O or Fourze. It was Captain Marvelous. "Whatever you're up to with us, I'm not going to let it continue." He took out his Mobilates and Ranger Key. "Gokai Change!" He brought the two items together, transforming into Gokai Red. Gokaiger!

"So you want to play, huh?", Tsukasa asked as he donned his Neo-DecaDriver and took out his Rider Card. "Henshin!" He inserted the card into his belt, which he then closed. KamenRide: Decade! After his transformation was complete, Tsukasa and Marvelous engaged in a fight, that went through all the corridors of the base. Eventually, Tsukasa took out another new card. "We've both got some new tricks. Let's try them out." He then inserted the card into his Driver. KamenRide: Geats! Get Ready For Boost! And Magnum! Ready, Fight!

"Good idea.", Marvelous nodded as he took out and used another Ranger Key. King-Ohger! Now transformed into Kuwagata-Ohger, Marvelous swung the OhgerCaliber and King GaburiCaliber at his opponent, before triggering an attack with the latter weapon. King Vamola Mucho!

But Tsukasa blocked the attack, before pulling out Geats' Magnum Shooter 40X and combining it with a Raise Buckle for an attack. Arrow Tactical Blast! "You'll have to do better than that."

"You're right.", Marvelous nodded as he used another Ranger Key to change forms. Don Momotaro! Now in the form of Don Momotaro, he slammed the Zanglassword against the Donblaster. Party Time: Gokaiger! "Take this!" He swung the sword, executing a powered up version of his regular attack. Final Wave!

KamenRide: Buffa! Growl! Crash Out! Zombie! Ready, Fight! Tsukasa turned into a different form, that tanked the shot. "Buffa's Zombie power prevents him from dying." He then ran forward, pressing the activator on the Zombie Breaker. Poison Charge! He then slashed his opponent back. Tactical Break!

InuBrother! Marvelous shifted into another form, which was short enough to make a dash between his opponent's legs, before throwing a large shuriken at his foe. He then shifted again. Don Dragoku! "This experiment's given me every Ranger Key, not just the Red Heroes.", Marvelous boasted as he thrust the Ryuko Halberd into his opponent. "We could do this all night."

"You're right.", Tsukasa nodded as he swapped forms again. KamenRide: Tycoon! Ninja! Ready, Fight! He then disappeared from the hold he was in and generated mutiple duplicates, all of whom slashed at Marvelous in succession.

"Let's try something bigger.", Marvelous decided, switching again. KijiBrother! Marvelous took Tsukasa between his now extended legs and flew outside the base onto the moon's surface. "Time to end this."

"My sentiments exactly.", Tsukasa nodded, as he inserted another card. KamenRide: Beroba! He then grew giant, transforming into a misshapen looking pink Minotaur. Beroba, Loading! Ready, Fight! He then leapt into the air, bringing the Laser Raise Riser down on his foe. Final AttackRide: Be-Be-Be-Beroba! The result impact created a dust cloud that obscured everything.

When the dust cleared, Fourze and Kikaider came out to find the pair laughing their asses off. "Ah, I've missed you, Decade.", Marvelous chuckled.

"Me too.", Tsukasa said in response. "These really are fun times."

"They're okay.", Kikaider radioed back. "We can resume preparations."

And so, everyone went back to their lives in the base. Though now, the sheer number of people made group training sessions both less feasible and less common. The people spent their time together mingling, swapping stories and in the case of AkibaYellow - Yuko Yamada - asking the others for advice on materials for costume making. When the next group was rescued, the Riders were fortunately Takumi Inui, who didn't really care about Decade, and Mayu Inanori, who had never heard of him. And a while later, the next group showed up, one composed entirely of 5 Kamen Riders. Well, 4 Kamen Riders and a pseudo-Rider. And the reaction was surprising. "Are you the one who rescued us?", Kamen Rider Valkyrie - Yua Yaiba - asked.

"I suppose I am.", Tsukasa nodded. "I saw what happened. One of your comrades turned on you at the last second."

"Yeah, that Mutsuki jerk.", Armoured Rider Kurokage - Ryoji Hase - growled. "If I see him again, I'll break him over MY knee."

"Indeed.", Tsukasa nodded. "But for now, you can help the others in this place train." As Team 8 moved to join the others, Tsukasa and Megumi looked at the screen, which displayed the next 6 - Armoured Rider Baron, Shuriken Sentai Ninninger's AoNinger, Genseishin Justiriser's Riser Gant, Engine Sentai Go-Onger's Go-On Gold, Choriki Sentai Ohranger's OhPink and Mirai Sentai Timeranger's TimeFire. "How many more of these experiments will we have to go through?", he sighed.

"I don't know.", Megumi shook her head. "We could be going through this for the rest of time. There's certainly no end in sight."