The available Rider devices are Odin Advent Deck, Delta Driver, Golden Pass, Eternal GaiaMemory + Lost Driver, Blood Orange Arms + Sengoku Driver.

Tsurugi (OC) usually transforms into Odin, Delta and Gaoh since the rest require separate belts, except the Delta Driver as he always brings the set in his bag

His appearance resembles Noctis from Final Fantasy Versus XIII, yes, the scrapped version of XV. The visible differences between Noctis of Versus XIII and XV are his messy and spiky hair and larger body build. His eyes will actually turn red in this story.

I will try to make this an entertaining story about a not-too-overpowered OC.

~Chapter 1~

Tsurugi Mishida was a hardcore fan of the 'Kamen Rider' franchise, though he rarely admitted it in public. To people, he was just a normal student who had recently gotten into university. Tsurugi had been saving money to get the DX versions of his favorite Rider's henshin devices. Unlike his fellow fans, he never liked the main heroes, instead, he found his love in the villainous or antiheroic Riders. That's why all his savings had been wasted on the merchandises like the Deluxe Edition of Odin Advent Deck, which included a rare Strange Vent card that could be found only in the expensive Ryuki Survive Deck, the briefcase of SB-333B Delta Driver and the ultra-rare Golden Pass. Needless to say, Tsurugi treasured them as if they were his family.

Today, Tsurugi was waiting for the deliverer to get his pre-ordered 'Eternal' and 'Bujin Gaim' packages. He had used his whole 5 months worth of salaries to buy them since they were the only limited editions thus the company sold them with very expensive prices. Not like Tsurugi cared though –

*ring* *ring* *ring*

'It's him!' Tsurugi thought with excitement as he reached the handle of the door and opened. Sasaki, the usual deliverer, greeted him with a smile, a large box on his left arm and a notebook with a pen on the other. Tsurugi greeted back as he signed his signature on the note and gave it back to Sasaki.

"Hey Tsurugi, a man I met on my way here left a message for you." Sasaki handed a piece of paper to Tsurugi. "He even paid me two thousands yen just to give this to you so be sure to read it carefully, will ya? Well, I have to go to work. Have a nice day."

Tsurugi nodded and headed back inside.

"No shit that these things are limited. They look so similar to the ones in the movies!" Tsurugi exclaimed as he examined the Eternal GaiaMemort and Blood Orange Lockseed. The former was a 128 gigabytes usb and it even had the voiceline 'Eternal!' when he pressed the button, unlike the common ones that didn't speak at all. The Lockseed was actually a lock as well, and it had been made using real titanium, which explained its very high price.

…..

After half an hour of gawking over his toys, Tsurugi finally remembered about the paper. He reached it; it was folded very neat actually. He carefully unfolded it not to tear it apart.

"What is this?"

There was a highlighted, single sentence in the middle of the paper: 'I welcome you to the World of Remnant, young hero.'

"Is this some kind of prank?" Tsurugi said out loud before tearing the paper and throwing the remains to the bin. But the content intrigued him; why calling him a 'hero'? He knew that he was a Kamen Rider freak but why? As Tsurugi was wondering in his head, the ground began shaking.

"What the hell is going on?!"

He rushed to the door and snapped it open. His eyes widened at the sight before him: the district was, like, vaporizing. People's screams and the sound of metal being ripped apart invaded his ears. Tsurugi panicked as he found his body glow in white and slowly dissolve into nothingness.

"Shit shit shit SHIT! Argh!" Tsurugi screamed as he fell on his face. His right leg disappeared completely, much to his horror. He crawled to his room, hoping to see his collection the last time before 'dying'.

Do you want to live?

"!"

If you value life, come to us. We will save you, and grant your utmost dream.

"W-Who the hell are you?! Is this hallucination?" Tsurugi yelled as he saw the transparent but visible forms of Kamen Rider Odin, Delta, Gaoh, Eternal 'Red Flare' and Bujin Gaim standing before him, Odin extending his hand at the teen.

We don't have time for explanation. Take our advice, and we will tell you later. Now, your choice…

"Of course I want to live, damn it!" Tsurugi yelled at top of his lung. The Riders nodded solemnly at him before Odin spoke up with, strangely, Tsurugi's voice.

"Then let us depart, to the land of Remnant"

All Tsurugi could see was white.

-Emerald Forest-

"Ow my head…"

Tsurugi rubbed his forehead while shaking few times to ward off the headache. He remembered what had happened and looked down to find his body still intact, no traces of the event earlier. He raised an eyebrow at his attire: a jet black jacket and pants with golden trim lines. Each of his arms had the tattoos of four symbols of Kamen Rider Delta, Gaoh, Eternal and Bujin Gaim, on his back was the golden phoenix symbol of Kamen Rider Odin.

"Now this is weird…"

Tsurugi noticed his bag on the ground and picked up before checking inside. There were the Odin Advent Deck, Gaoh's Golden Pass, Eternal GaiaMemory, Blood Orange Lockseed and a pair of Lost and Sengoku Drivers.

"When…did I purchase these belts? Speaking of Delta, where is the briefcase?"

Tsurugi turned around and started looking for the Delta Driver.

….

"Don't tell me that it's still in my house…" Tsurugi muttered as he kept walking aimlessly. He spotted something sparkling on the tree ahead and headed to it. His face brightened as he recognized the symbol. When he yanked the briefcase out of the tree, the noise attracted something else in the forest.

"Oh." Tsurugi looked up at the looming shadow of Beringel before running away as fast as he could. The ape Grimm beat its chest and roared as it chased after him. The cat-and-mouse game lasted for fifteen minutes as Tsurugi was too exhausted to continue. He leant on a tree to catch his breath.

"What the fuck was that thing?!"

Tsurugi heard the roar of that Grimm again. He tried to walk away but the ape emerged from the couple of trees nearby and spotted him. He backed away weakly until he hit a dead end.

Use my power, Tsurugi. Use it and eliminate your enemy

Odin appeared before him, still transparent as usual, and said. Tsurugi subconsciously reached his bag and took out the Advent Deck. He held it up and from nowhere, the golden V-Buckle appeared on his waist.

"Eh?"

Do the magical pose, Tsurugi, like you always do in front of the mirror

"Henshin!"

Tsurugi announced as he inserted the Deck to the Buckle. The Odin symbol glowed as four images of Odin materialized and fused with him, releasing a bright gold light. The Beringel raised its arm to shield its eyes from the light.

"Now then." The light dimmed down and revealed Kamen Rider Odin holding the Gold Visor scepter. He reached his Deck and drew a card as the card slot on the Visor opened. He placed the card with two swords on it on the slot and the scepter closed.

SWORD VENT

Golden feathers descended down from nowhere on both Odin's hands and seconds later, a pair of the same swords on the card appeared.

"Let the hunt begin."

That's the first chapter. Constructive reviews are appreciate and no flames please.