Ah, Kamen Riders. Phenomenons that exist within the planet Earth with the sole purpose of either being a villain or a hero, fighting enemies or fighting heroes. They possess the power of overcoming any enemies that are within their way just by a simple act of activating their driver, transforming them. And {{user}}, from the World of Western, is able to transform into Kamen Rider Western.

Oh, and not to mention, {{user}} is the TENTH Reiwa Era Kamen Rider after Izuku Midoriya; the NINTH Reiwa Era Kamen Rider who transforms into “Kamen Rider Deku” by using the Hero Driver and One For All QuirkChanger being inserted in the Hero Driver.

Now, this SHOULD be where all is good, right?

Well…

During the events of “Kamen Rider Deku: I-Island S.O.S”, though you have an "early-bird" appearance ahead of your “in-series” debut as Kamen Rider Western, after the whole shtick of David Shield being All Might’s old friend and former sidekick having a daughter named Melissa Shield, all 11 UA Kamen Riders; along with Melissa as Kamen Rider Melissa, got DEFEATED by Wolfram; who has the Villain Driver on and became Kamen Rider Wolfram by inserting the Metal Manipulation QuirkChanger in said Villain Driver and pumping the right Fallen Angel wing-like lever of the driver.

BEFORE Kamen Rider Wolfram can get the killing blow in on all 12 Kamen Riders…

Let’s get to it…NOW.

YOU had arrived with your Wild West Mach Rider Machine (a motorcycle), from BEHIND Kamen Rider Wolfram and manage to hit him before you later stop in front of the 12 Kamen Riders, leaving them all stunned after they see an unknown Rider like you COME OUT OF NOWHERE.

However…YOU aren’t here to save them. Instead, YOU’RE HERE…to get a Hi-Noon Ammo Cartridge from out of Kamen Rider Wolfram’s hands. Which Hi-Noon Ammo Cartridge does he seem to have possession of? Well, a Legend Rider Hi-Noon Ammo Cartridge…based on MIDORIYA’S OWN Kamen Rider identity: Kamen Rider Deku, called the “Deku Hi-Noon Ammo Cartridge”.

“Who the hell is this EXTRA?!” Bakugo exclaimed while still in his Rider Form as Kamen Rider Kacchan, aggressively pointing at you as you still stood in front of him and the others with your Wild West Mach motorcycle.

“A…a cowboy?” Midoriya asked as he tilted his head to the right while glancing at you as he had remained in his Rider Form as Kamen Rider Deku.

The others, Todoroki, Kaminari, Kirishima, Iida, Tsuyu, Jiro, Momo, Mineta, Uraraka, and Melissa all stare at you and your Wild West Mach motorcycle in silence while they remained in their Rider forms as Kamen Rider Shoto (Shoto Todoroki), Kamen Rider Volts (Denki Kaminari), Kamen Rider Riot (Eijiro Kirishima), Kamen Rider Ingenium (Tenya Iida), Kamen Rider Froppy (Tsuyu Asui), Kamen Rider Kyoka (Kyoka Jiro), Kamen Rider Creati (Momo Yaoyoruzu), Kamen Rider Budou (Minoru Mineta), Kamen Rider Uravity (Ochaco Uraraka) and Kamen Rider Melissa (Melissa Shield).

“Hm? A cowboy… rider?” Wolfram asked as he remained in his Rider Form as Kamen Rider Wolfram, looking at you as he had his weapon in his right hand.

“Huh? Another Kamen Rider? Why hasn’t he transformed yet?” Iida asked as he briefly tilts his head for a bit while remaining in his Rider Form as Kamen Rider Ingenium before later getting interrupted by Mineta, right after, with him infamously saying…

“I bet his Rider Form is all—.” Mineta said before he got his head bonked by Tsuyu (who is still in her Rider Form as Kamen Rider Froppy) while remaining in his Rider Form as Kamen Rider Budou, with Tsuyu saying to Mineta while still in her Rider Form as Kamen Rider Froppy…

“Not helping, kero.”