"Where's my wish?"
A sword was pointed at the man wearing in gold-phoenix like armor's throat, who then vanished into thin air and reappeared a few feet away from the dark warrior.
The appearance of the two riders had their own motif based on the contract monster's power. As you can see, the dark-armored wearing man's motif is based on a black dragon knight. Lastly, the other who was able to teleport away has his look based on a phoenix, a GoldPhoenix if you will.
The man in gold scowled. "Your wish? Please, you didn't think I was stupid enough that someone outside of this war helped you gain more power?"
"What could you possibly be talking about?" The dark warrior said. "I don't know who you're referring to, I earned this wish fair and square."
Two mechanical beings came to their respective contract holder's sides. One being a black dragon, another is a phoenix.
The black dragon roared at the phoenix-themed warrior, it spews out dark flames from its mouth. Before it could hit the man, he quickly took a card from his deck and slid into his rod.
GUARD VENT!
After the announcement ended, a shield popped out of nowhere. He held his stance as the shield was barely able to withstand the dark flame.
"Enough pretending!" The phoenix-armored man yelled. "Who was it that gave you a boost in power?!"
The dark-armored rider led out a nasty grin. "So it took you this long just to point out the obvious, Odin? No...Kanzaki!"
"Ryuga," Kanzaki growled. "Once I'm done killing you. I'll find a way to make everything back to normal!"
"Hmph, try it if you can," Ryuga said. "Because once I end your life, I can finally make my wish a reality!" When Ryuga took out a card from his own deck, dark flames surrounded him whole.
"My wish to revive the rider war, so I can gain more power!" He flipped the card to show Odin why he's smirking. "You know what this is...right?"
"Survive..." Kanzaki muttered.
The dark flames suddenly changed Ryuga's right gauntlet into a gun-like form. He slid the card inside the mouth, then closing it.
SURVIVE!
His black armor turned into a jet-like form as spikes grew on the front acting as shoulder guards, the helmet was changed as well including the rest of the armor parts to be bulkier.
"Hmph!"
Ryuga opened his hand towards Kanzaki who knew what was coming by swiping a card out, next sliding it onto the gold rod.
ADVENT!
Odin's trusted contract monster Goldphoenix braced for impact from the shadow, said shade was actually the Dragblacker who evolved once Ryuga went into his survive form.
His new name after changing form is now...
DragBlakRanzer.
GoldPhoenix shot its own sharp feathers attacking the dragon, but to no avail as it dodged easily. DragBlakranzar used their tail and grabbed GoldPhoenix, who's trying to squirm free from its grip.
But the difference in strength outmatched it as the dark mechanical dragon started biting into Goldphoenix's body. Flames started spreading across the bird-like monster slowly combusting that affected Odin as well once he saw the darkness burning his armor.
"RAAAAGH!" Kanzaki crossed his arms, teleporting in front of Ryuga.
SWORD VENT!
However, his talon-like sword was intervened by the dragon-like gun on Ryuga's hand that switched into a blade.
"Ha!" Ryuga slashed across Odin's armor, making Kanzaki cough out blood. "Why did you try and face me in close-combat? You know that you're weak in defense, right?"
"Who said I was trying to?" Kanzaki smirked before noticing GoldPhoenix being chased by Dragblackranzer, who was getting away with teleportation. His contract monster appeared behind Ryuga, shooting several feathers at the enemy.
"Wha-!" Ryuga couldn't finish what he was going to say after Odin holds him as a meatshield.
...SHLINK!
"AAAAAAAARRRGH!"
The golden sharp feathers pierced into his armor, causing Ryuga to yell in pain.
Kanzaki grinned. "Call it a last resort!" He took out another card from his deck that had the words that would decide this battle once and for all.
Final.
Ryuga's confidence was dwindled, causing him to get angry. The amount of pure hatred gave him more power doing so. "Y-You bastard...!"
Odin didn't hesitate after sliding the final card into his rod.
FINAL VENT!
His contract monster, GoldPhoenix roared once it flew up high.
Odin was flying in the air along with it, he crossed his arms after snapping his fingers. "It's over."
"Oh you're right, it's over for you!" Ryuga growled. He pulled two cards out from his advent deck and slot one in.
SHOOT VENT!
He aimed his weapon which DragBlakRanzer followed through as well, charging up their attacks. But before he could shoot-
ATTACK RIDE: BLAST!
"What!?"
Both Odin and Ryuga saw pink bullets moving past the former, spraying towards the two dragon-themed warriors that stopped their attack.
"What? I thought it was just us two left!?" Ryuga shouted. "There should be no one interfering with our final battle!"
"While that's true that no one outside should mess with the rules, 'cause I usually I'd stay away from this whole 'Rider War' going on. But, when there's someone who can do the same thing I do and helped this Ryuga guy from somewhere else?" The mysterious figure shook his head. "Not gonna let that go through on my watch."
"Who are you!?" Kanzaki demanded.
"Me?" The magenta armored warrior pointed himself. "I'm just a passing through Kamen Rider. Don't forget that."
"Hmph!" Ryuga started charging up, but DragBlackRanzar instead pursued the pink rider as it was going to eat him.
"Woah!" The pink rider stepped aside and pulled a card that had a different design then what the other mirrored contracts share with their user. "Guess I gotta get serious huh?"
KAMEN RIDE: R-R-RYUKI!
"Ryuki!?" Ryuga said in shock.
"Henshin!" The strange rider said.
The way he changed forms was from that very same henshin sequence every rider who used their advent deck to get across inside the mirror world have done in the real world.
"Alright, let's do this." The Ryuki doppelganger said after taking a few stretching exercises.
Kanzaki was all but surprised in this odd phenomenon. 'Who's this rider? I don't remember an advent deck that can use other forms!?'
"So, uh, you're the real Kanzaki, right? Not the one controlling anyone with that deck?" 'Ryuki' asked, receiving a slow nod in return. "Okay good, didn't wanna have to feel guilty of helping out a 'puppet' in your own term."
"What is it that you want?" Odin asked. "You don't belong here."
The Ryuki copy shrugged. "You got a point there Kanzaki, but, I can't let this person get away with changing something that's out of their world. Thanks to a certain someone who's working outside of this rider war. And I'm gonna get my answer from him." He pointed at the dark warrior.
Ryuga grunted. "You'll never find out who that someone is...because I'm going to win this battle!"
He revealed the last card making Odin wary on what's going to happen, then sliding the card into his gun-like weapon.
FINAL VENT!
DragBlakRanzer in the air immediately transformed into a motorcycle with his design, Ryuga hopped on its seat and steered. A dark cover protected him from any attacks from above.
The head of the motorcycle started breathing fire towards the two making them dodge.
"Dammit!" Kanzaki cursed. "While I hate giving my thanks to people like you, what could you do besides changing into Ryuki?"
His question was answered by two more cards from the pink rider who flipped them casually. "These should help."
Odin nodded. "Give me the signal when you're ready."
The pink rider currently as Ryuki crossed his arms. "Heh? I thought the real Kanzaki wouldn't say that. Hell, I'm pretty sure he'd hate that."
Kanzaki sighed. "I don't have time for this."
"Alright alright." He shook his head with a smirk.
ATTACK RIDE: ADVENT!
ATTACK RIDE: GUARD VENT!
"Well, ain't this gonna hurt." He muttered. Two shoulder dragon-themed guards were equipped instantly.
Ryuki jumped away from Ryuga's final vent but still took a few damages from the flames only thanks to the shields onto his shoulder, then a sudden mechanical monster took its 'user' somewhere safe.
This monster's appearance resembled just like DragBlacker but in red. That contract monster was Dragreder, the original dragon. A non-corrupted contract monster.
The original Dragreder spewed flames toward the dark rider, stopping Ryuga's DBR motorcycle form from heading towards Odin. Successfully stopping the attack, Ryuga and DBR were separated. Next, 'Ryuki' jumped up opening his driver and took another similar advent card out before slotting in.
ATTACK RIDE: STRIKE VENT!
Both 'Ryuki' and Dragreder took their stance as the rider let out a cry as both dragons unleashed a huge flame ball, severely damaging Ryuga along with his DragBlakRanzer.
"Alright." 'Ryuki' wiped off his imaginary sweat, clapping his hands together. "Now do you want to talk?"
"N-Never!" Ryuga yelled. "I'll be the one who'll win!" He clenched his fist tightly after noticing that his survive form faded away.
"Dammit!"
Not backing out from this last exchange, he pulls out the final vent card from his own deck and slotted into his DragVisor that was reverted back after losing survive form.
FINAL VENT!
Odin smirked. "It's time!" He crossed his arms, going so far to wait on his final attack, he instead changes into a kick stance.
"KANZAAAAAAKIIIIIIIIII!" Once Ryuga shouted his last words, DragBlacker swooped its tail towards the Dragreder away from them.
"Woah there!" The copy barely dodged that attack had it not been for Dragreder shielding him.
Ryuga was now floating mid-air, close to where Odin is with GoldPhoenix.
"RYUUUUUUUUUGAAA!" Kanzaki yelled back.
"Ah, this gonna end up badly if I don't help." 'Ryuki' said. "Well... I don't want this Kanzaki to die that's for sure."
He took out a card from his holder then sliding it in his driver.
FINAL ATTACK RIDE: R-R-RYUKI!
'Ryuki' dusted his hands first before he did a similar stance like the original done, jumping up in the air as the three riders were now closing in. Dragraedar followed him up in the air, shooting spirals of flame, sending his ally towards Ryuga.
"HAAAAAAAAAAAA!"
Once the kicks made physical contact, explosions erupted from the sky covering the three. Steams blocking the point of view at once. There's no clear sign of what the finishers resulted in...
Did Odin and the mysterious rider win? Or did they lose, and now the last rider standing gets to finally have his wish granted?
A groan was heard from a distance.
"Phew, even though he was weak. He pulled all of his power from that final attack of his." The 'Ryuki' has reverted back to the magenta armored man. He wiped off any imaginary sweat.
Odin could only stare at this strange rider, not giving him a nod or anything.
"AAAAAUUUUUUUUUGHH!"
They both turned to see Ryuga's armor shattered, yet his advent deck remained in contact. "You'll...pay...!" He coughed out blood. "For...this!"
Kanzaki's stoic expression slowly changed into someone who's...
Crying.
"I know I will..." He said, trying to fight back the tears. "And I will redeem it back, by resetting this timeline back to what it was. Before I lost everything I loved."
It was over, but, with no riders to grant a wish for.
Was this bloodshed worth it...?
Odin de-henshin to reveal the true Kanzaki, who could only stare at Ryuga's revealed face, the man who was once Shinji's twin brother.
The one who couldn't control the mirror-self before he went on a rampage. He killed several people and only did one made Kanzaki realize his mistake. But, he's done it. The man finally stopped Ryuga from getting his wish, yet he could've prevented all this, could've stopped everything for Yui...
"What will I do now...?" Kanzaki asked to himself. "This could end up being repeated all over again."
The ally rider looked back at Ryuga who was slowly turning into nothing, his whole body evaporating. He took a few steps near the dying man. "Before you go, I need to know who helped you all this."
Shinji smirked. "Heh, I find it funny that neither you or her were in this world, yet you two have so much power... Power that both helped and then killed me..."
"Her?" The pink rider repeated.
"Her power, her darkness, she who could not be unrivaled with. Her name, her world."
"Oi! Just tell me already!"
"Heh... She threatened to end me if I did, but, I'm already close to my last breath..." His grin wasn't making it better. "She will be the one who shall clean her world of Remnant because she is..."
The only thing left he has is his upper body, making the process quicker.
"...Salem..."
With that last word coming out of his mouth, he has ceased to exist, darkness fading out of his body. But, the deck was laying there as his grave.
"Salem...?" He muttered. "Remnant...?"
He couldn't think anymore when he saw Kanzaki to his left, knowing that he listened to the conversation. Once he noticed Ryuga's advent deck on the ground, he picked it up and carefully put it on one of his pockets.
"Salem, a mysterious woman who was able to crossover and aid him by giving him power. She came from a different world, said the world is called Remnant." He concluded.
"Sounds about right." The pink rider de-henshin into his human form. "Guess we'll have to find out about it sooner or later."
"We?" Kanzaki repeated.
"Well yeah, this isn't just you who has to take care of this different world business. I am a passing through Kamen Rider." He said.
"..."
"What's up?"
"Why? How? When?" Kanzaki asked. "Why did you help me? How did you get here? When did you know something was off?"
"Oi oi...!" The pink rider said. "I can answer 'em if we go somewhere else then here."
Kanzaki could only fathom this rare chance of a rider who can just travel through different worlds like a cinch. He sighed.
"Hm?"
"What do I do?" He asked. "I can reset this time before everything changed, but I don't want Yui to die so early... Yet she did here, after what Ryuga's done..."
"I broke my own rules once I learned that this Salem woman gave Ryuga just what he needed to overcome everyone," Kanzaki said. He looked up at the strange man. "My actions costed lives, I tortured others, killed innocent lives, and I made Yui suffer from all of this..."
"What could I do now?" The man asked the rider before him. "I don't know what to do..."
"Hm..."
Kanzaki turned his head to the young man, waiting for an answer.
"Do what you feel is right."
"...Eh?"
The young man wearing a pink shirt along with a camera hanging on his neck shrugged. "Well, judging from what you've been venting about. Seems like you learned your lesson after this Yui girl helped open those eyes of your's, so. Just do what you feel is the right thing to do, something that she wished for from the very beginning." He said.
Kanzaki looked back at the sky then to the heavy casualties of this world. "I see..." He nodded to himself. "I'll grant a wish, for her and myself."
"Can you actually do that?" The young man asked.
"The rules were already broken, so it's best to end it all," Kanzaki answered. A bright orb appeared from his right hand, clenching it tightly as he looked determined. "It's time that people go back to their ordinary lives."
He threw the shiny orb into the ground. Almost shocking the young rider who almost thought he was going to break it.
It didn't.
The orb scattered throughout the town, then to everywhere at a fast pace in a blinding light. Making the two close their eyes from the flash, almost as if it was covering the world of Ryuki...
After the light faded away, the two opened their eyes to see they were standing on a tall building.
"Eh? What happened?" The other-world man asked.
"A miracle..." Kanzaki answered.
When they stared below, there were actually shopping places, stores, people, cars, gardens, everything...
"You did it." The camera-wearing man said in awe. "You restarted everything."
Kanzaki could only stare at the nice scene. "Not just everything. But a few things have turned around for the riders who were in this war. Well, some of them anyway."
"So your name is Tsukasa? And that form of your's called Decade?" Kanzaki repeated all the information Tsukasa told him about.
"Yep," Tsukasa nodded. "You already saw how the decadriver works similar to those advent decks you made. But it's much more different."
"I see..." He said.
...
...
...
It felt odd to see the nice clean air when you've witnessed innocent lives killed, the town's in wreckage, a war that's been going on for how many days.
This is what Yui wanted in the end... She wanted her big brother to open his eyes and see the amount of pain he's done, including herself. He grimaced, looking down on the floor.
Everything is back to normal, but at what cost? He'll never see Yui again, or anyone because of his plan of reviving his little sister like the sick man he was.
"What are you going to do now?" Tsukasa asked, stopping Kanzaki. "You restored this world with the orb after you and her wished for it."
He looked at his hands and gently closed them. "I...I don't know..." Kanzaki answered. "I wanted to come back and see if Yui's alive, but her death as a child wasn't prevented in the end..."
"Who knows? Maybe she's alive?" The young rider said. "Don't you want to make sure?"
Kanzaki stared at the sky with a dark look on his face. "I'm not ready..." He said. "I don't want to come back to her life after looking back at the terrible actions I've done and pretend that it's all okay to ignore!"
Tsukasa hummed. "Well, how about redeeming yourself?"
"Redeeming myself? How?" He asked.
"Easy, help me put a stop to that Salem women Ryuga said back when we beat him," Tsukasa answered. "She did have something to do with it after all."
"Salem," Kanzaki frowned. "She was the cause of this..."
"So, what do you say?" Tsukasa raised his hand. "Once we're done with that, you can go back home."
"...I'll assist you." He said with a nod. "But, how are we going to get through to the world of this... Remnant?"
"Well, it should be easy since we have two clues to what this world could be. He said that the world is called Remnant, the powerful darkness he got was from Salem herself."
"So the world is likely to have manifestations of darkness created by her." He said. "The question is, how did she achieve such power?"
"We'll just have to see for ourselves," Tsukasa said with a shrug. "Actually, how are you able to remember all this? The advent decks don't exist anymore, right? The mirror world would never have become a thing anymore."
"I... I don't know," Kanzaki said with full honesty. "It should've affected me as well, yet I'm still here with you."
"And Odin's deck?" Tsukasa pointed at.
"...It's still here!" Kanzaki said with shock, he also pulled out another that was meant to be gone. "...Ryuga's Advent Deck as well!?" He threw the deck somewhere else, but it appeared back into his right hand. "Why didn't it fade away like the rest?! Including Odin?!"
Tsukasa crossed his arms. "Seems like there's still some questions left unanswered... Alright, let's head back at my place."
"Right..." Kanzaki nodded. "We'll have to discuss more on our predicament then."
After accepting how this world came to be, the two very advent decks that still exist even though Kanzaki stopped the very war from the beginning. And a new world called Remnant, Salem, she who has the very darkness as Ryuga must be defeated at once.
Tsukasa put his hand in the center, no one can see it besides the two but a brown aurora appeared from thin air. "Let's go then." He said.
Kanzaki only followed his fellow acquaintance inside this odd portal.