[With Y/n]
He was resting on his bed with a sleep, wear sleeping until his door was loudly opened.

Aqua: GOOOOOD, MOR-

Y/n in a sleepwalking state sped towards whoever made that loud slamming noise and held the person onto the wall with his left hand on their neck and a vibrating right hand ready to strike. The person then frantically waved their arms..

Aqua: WAIT!! WAIT!! IT'S ME, AQUA!!

Y/n then heard Aqua's voice and stopped his vibrating right hand. He used his fingers to lift up his sleeping mask to stare at the blue haired "Goddess".

Y/n: Oh, Sorry Aqua. *sets her down*

Aqua: Oh, Thank Eris! Wait.. why did I say that??

Y/n: I'm guessing you is having a soft spot for the Goddess of Luck?

Aqua: I-i dont know what you're talking about

Y/n: Uh-huh, sure you are. Where is everyone?

Aqua: they are all downstairs.

Y/n: Cool.

Y/n quickly gets himself ready and heads down to the lobby where Megumin and Darkness are at.

Y/n: Morning.

Megumin: *turns to Y/n and goes to him* Morning, my lightning rod.

She jumps up and kisses him, as he kissed back.

Aqua: *grabs his face* Dont you forget me *kisses him too*

Y/n: You two are awfully clingy for some reason.

Kazuma: Yo, Y/n. I found this addressed to you.

Kazuma throws me a letter..with Kamen Rider Decade's Logo on it.

"Hello, Y/n. I cane to tell you that one of the Dark Riders have gotten a bit too power hungry for more Games. You see where I'm getting. Anyway's, Kamen Rider Ex-Aid and his group are having trouble fighting this high level Bugster. Do you think you can assist them?

"Tsukasa"

After reading this, Y/n put his mind onto the only person who wished to be the sole gaming master..

Y/n: Ok...now I am so glad I woke up

Y/n rushed into the kitchen and cooked up a marvelous set of food.

Y/n: Let's go eat.

Everyone began to chow down, although a bit slowly than last time..

[After Breakfast]
Y/n then gets ready in new clothing suiting a games style..

Kazuma: You going into a world full of Video Games..I what I can go with you.

Y/n: That would've made a awesome boy's trip. However, the world im going in has a virus that you can easily get infected by..do maybe another time.

Kazuma: Well, that's fine.

Y/n: You are in charge until I get back ok?

Kazuma: You can count on me.

Y/n chuckled and created a dimension wall to the World of Kamen Rider Ex-Aid and going inside it before it close..

[World of Kamen Rider Ex-Aid]
Y/n then exits out of a dimension wall and takes a look at his surroundings..

Y/n: Wow..what a sight.

He takes a look at the Wrist device on his right arm and sees that the Eris he had was changed into Japanese Yen.(around 100 Million Yen)

Y/n: Neat. Now to see where the Bugster problem is at hand.

He charges up blue lightning before speeding off to a random location..

[At Seito Hospital]

In a medical room with a built-in arcade called DoReMiFa Beat where are many doctors in the room. One of them was the Director of this facility, Haima Kagami

Haima: Aw...another bugster is wreaking havoc.

???: No worries, Director.

He turned to see the Former Intern now Surgical resident: Emu Hojo/Kamen Rider Ex-Aid

Emu: Kuroto cannot handle all of us.

A woman can be seen in the DoReMiFa Beat arcade game. This is the Avatar Bugster of the particular game: Poppy Pipipapo. She also assumes the human alias of "Asuna Karino" to blend with the human society, which in turn is a wordplay on her side job as "temporary nurse"

She pixelates out of the game and into real life and in with the doctors..

Poppy: Kuroto is getting out of control with Zombie Chronicle.

???: It is an Hindrance.

Hiiro: This Complex of his is deteriorating more as long as he's control Zombie Chronicle..

???: Yo.

Another man in a doctor's coat appears and it shows to be Kiriya Kujo, Kamen Rider Lazer

Kiriya: You lot should see this.

He grabbed the remote and turned it on just in time to see the deranged God-wannabe Dan Kuroto..or Dan Kuroto Shin as he prescribed himself..

Kuroto: Good Evening, Kamen Riders.

Hiiro: *glares at Kuroto* Genm.

Kuroto: It appears that a new player reason just joined in the ranks of Zombie Chronicle. Whoever he is, he is not any different from any of you. Mortal beings like you could never reach the highest level which am i..Dan Kuroto Shin..

Kiriya: He's annoying.

Emu: We better get down there and help the citizens.

With them nodding, all of them went out with Gane Drivers and Gashats in hand..

[Back to Y/n]
The young man was on a building overlooking the damage being done..

Y/n: Zombie Chronicle. Why would this bastard think this was a good idea?

He heard growing as he looked down to see A group of Kids was running from the army of Zombie Chronicles until one fell onto the floor. One of the Zombie takes notice and goes to touch her with Game disease.

Zombie: ̷i̷n̷f̷e̷c̷t̷.̷.̷

Y/n: Oh, hell no..

The scared child closed her eyes and quivers in fear as the Genm Zombie goes to touch her. However, the kid was then whisked away in blue lightning. The little girl opened her eyes to see that she was away from them..

Little Girl: H-huh?

Y/n: You ok, little miss?

The girl looks up to see Y/n holding her with lightning surging throughout his body.

Little Girl: *with eyes sparkling* whoa...your sparkling.

???: Hitomi!

A man and woman rushes towards them, most likely the parents of the little girl. The hero hands them their kid, as the mother looks at him..

Mother: Thank you, young man.

Y/n: Don't mention it. You two should get out of here while your can.

Father: We will.

Hitomi: Thank you, mister!

The family then ran away from the area as more Zombies in the amount of thirty just appears in front of the young Speedster.

Y/n: Ok..*eyes turn pitch black* ̷B̷R̷I̷N̷G̷ ̷I̷T̷ ̷O̷N̷!̷!̷!̷

His body charged with electricity as he speeds towards the undead rider army, slicing through each of them with his vibrating hands. However, as he finished them, a lot more showed up.

Y/n: I guess there's no end.

???: Whoa! INCOMING!!

Y/n takes a sharp turn and looks to see someone sliding down a hill on a wheelbarrow with a doctors coat on. Eventually, he crashed and flew in the air flailing his arms until he landed face first into the ground.

Y/n: I'm not even gonna ask..*goes to him* you ok, man?

Y/n gets a good look to see that it's none other than Emu Hojo: Kamen Rider Ex-Aid..

Emu: Yeah.

Y/n: Where do you think all these Zombies keep coming?

Emu: Not sure. *gets up and dusts himself off* But you should get to safety while you can.

Y/n: You expect me to leave a fellow rider by himself?

Emu: Wh-

An orange pillar of light with dark purple lightning started to rise from the ground, gaining the attention of the two riders.

Emu: Whoa.

Y/n: That's our que to go see whatever that is..

He then grabs onto the young Doctor, stands him up and charges electricity on his body..

Emu: What are yo-

Y/n them runs with Emu in hand, leaving a Blue Lightning trail and a Bitch-Screamimg Kamen Rider..

(Either one is fine for Emu screaming)

[Timeskip]
Y/n arrives with Emu shaking from being moved at fast speeds. He regains his composure as they take notice of the Genm Zombies starting to crowd onto one another..

Y/n: what are they doing?

???: What i instructed them to do.

They look up to see Dan Kuroto somehow floating in the air..

Emu: Genm..

Kuroto: Kamen Rider Ex-Aid..and Kamen Rider Ganbarizing.

Emu: *in shock* G-Ganbarizing?? *turns to Y/n* You're Ganbarizing?

Y/n: In the flesh.

Kuroto: You will not stand in my way of perfecting this World. In fact..I had help from this Shade fellow who gave me this.

He holds up a blank Gashat which radiated cruel purple energy. He then let's it fall down to the horde..

Y/n: *thinking* Shade must've give him a boost..

As the blank Gashat drops to the large horde of Genm Zombies and made contact, the zombies then started to liquidfy into a slimy purple mass as the said mass convulsed with energy. The gigantic mass then begins to take shape of a Titan sized monster. The mass then crystallized for a few seconds before it all shattered to reveal one of Video Game's occurring villains: Bowser.

In this form however, Bowser becomes a gargantuan kaiju, being one of the largest physical forms that he has ever taken (along with Giant Bowser). Similar to Black Bowser from Paper Mario: Color Splash, Bowser's skin becomes entirely a black color with glowing yellow eyes without pupils, though in contrast, his hair glows a bright red and the tips of his shell spikes glow yellow and red. In comparison to his normal self, his body is much larger than his head, his tail is somewhat longer, and he also has noticeably larger pectoral muscles, a trait shared by his Super Smash Bros. appearances.

Y/n: Bowser..he's gotten uglier..

Fury Bowser roared loudly as he unleashes a large stream of fire at the two..

Y/n: Oh, no!

He grabbed Emu and sped away before they were scorched alive. Y/n carried the doctor onto a safer area where the other Doctor's are and where Fury Bowser couldn't see them.

Kiriya: Talk about coming here in a blink of an eye.

Poppy: *looks at Y/n* Who would you be?

Y/n: I'm a friend.

Emu: How can we possibly fight this version of Bowser?

Y/n: Honestly, you wont..

Emu: Huh?

Hiiro: What make you think you can take on this bugster?

Y/n dosent say anything but instead, summoned his Ganbarizing Driver as the SHR gives him two new cards: one with the Game Driver and one with the logo of Super Mario.

Emu: *stares at the device* That driver..

He scans them both as he gets the Game Driver and a Gashat with the power of Nintendo's well known Mascot. Emu looked absolutely bewildered as of how Y/n managed to get the driver without the compatibility surgery and a gashat of his creation..

Emu: W-what? How?

Hiiro: There's no way a regular person can have the game instill without any backlash.

Y/n: I'm a special kind of rider.

Kiriya: Just what kind are you?

Y/n: One where my imagination..holds no limits.*presses gashat*

[IT'S A ME..MARIO!]

Multiple Question Blocks, Green pipes, and assorted items are released from the game icon behind. Taiga, Nico comes forward and Parado appears to the group..

Parado: *appears next to the group* Hello. What the sit-

Emu: *grabs Parado* You might wanna watch this guy.

Parado: What are you-

He looks at Y/n with the Super Mario Bros. Gashat and slowly gets stunned

Parado: I-is that..

Nico: Super Mario Bros.?!

Y/n: N-Dai Henshin!! *Loads in Gashat and opens driver*(N for Nintendo)

[GASSHATTO!]
[GACCHAN! LEVEL UP!]
[THE PRINCESS HAS BEEN CAPTURED AGAIN! ONLY ONE PLUMMER CAN SAVE THE DAY! [SUPER MARIO BROS!]

A holographic projection showed a game rider that looks like ex-aid, but has a mario design. When it collided with y/n, it was in his rider form that looked similar to ex-aid, but had a few differences: Now he's wearing a semi red and blue body suit with red shoulder pads that had the Mario logo the silver chest plate, on the center resembling a game controller with four colors on it. Green ring trimmings on his ankles, wrists upper arms and thighs. His helmet resembles the same very mascot character in the screen but the eyes are blue, dons a gray mustache and Mario's Cap in his right hand..

He holds the cap visor with two fingers and the back with the whole other hand, adjusting it juat like Mario does, then he releases it and snap his fingers pointing at the enemy..

Shroom: Let's a-Go!

The Seito Doctor's, Parado and Nico stared in pure surprise of seeing someone else they never seen transform.

Parado: Oh..my..God...SUPER MARIO?!?!

Nico: That's the most famous game ever lived.. and he has Mario's Powers

Fury Bowser stared at the Mario theme Rider in pure Malice..

Fury Bowser: Mario...

Shroom: Let's have a change of scenery, shall we?

He pressed onto the Kimewaza button to change the stage.

[STAGE SELECT]

A different background frame was seen as it lowered towards Y/n and the Bugster. The rider then turns to the E.R Riders and spoke..

Shroom: Let me deal with this guy, alright?

Shroom jumps into the frame as the two were then phased into a area was changed into a wasteland at dask at dawn..

Shroom: Now then..time to calm your big ass down.

[Fight!]
Fury Bowser charged up his fire breath and then released it in a fury blast, which Shroom had to dodge.

Shroom: Damn, that fire is hot as hell. But with my tiny size..maybe I can even the odds.

He reaches inside his drawers and pulled out two power ups: a ice flower and a Mega Mushroom. Shroom absorbs them both. From this, his form changes his overall look to red as the inner colors was now blue. He also grew to gigantic proportions almost to Fury Bowser.

(Even though using a item with the Mega Mushroom dosen't work that way, but for this story battle..let's say these two can work)

Mega Ice Shroom then shoots out multiple Ice Balls at Fury Bowser, which agitated the beast. The Koopa got in his shell, digged into the ground and shoots out lots of protruding spikes from his shell that rained down from the sky.

Shroom: Oh, Damn!

Shroom dodge them left and right, now wanting to be impaled from the spike. Unfortunately, he missteps on a ledge and that les him to be hit with one of the spikes, de-powering him to regular Mega Shroom.

Shroom: Damn it..i got careless..

He then see's Fury Bowser slowly to get up with new spikes forming. He growled at Shroom before and rev'd up like a tire ready to roll out. With that, he rolls viciously at the Rider as the said rider dodged sideways to avoid being trampled. He does this twice until the beast showed down. The rider sees one of the spikes next to him and an idea comes to him..

Shroom: Hmm..can his own spikes hurt him?

The rider wondered as he picks up a spike from the ground and carried it to the Bugster villain. He threw it as hard as he could at the downed Koopa and as it reach impact, it blew him over to his back with his underbelly showing.

Shroom: Time for a send-off!

The Nintendo themed Rider took out his Gashat and blew on the tip, before inserting it in the Kimewaza slot and pressing the button..

[GASHATTO!]
[KIMEWAZA!]

Y/n's gamer body pulses with red energy before he pressed the button again..

[MEGA FIERY CRITICAL STRIKE!]

Y/n leaps towards and bounced on the corrupted Koopa King in the gut. After jumping off him, y/n launched a great fiery spiral blast that was sent down to the immobile Koopa King, followed with a Rider Kick. As he and the blast shot  down as it travels, hitting Fury Bowser point center. The large explosive aftermath sent him flying in the air for a few seconds before falling hard back to the ground. The rider lands on a

Shroom: That takes care of that.

[End of Fight]
The Fury Bowser bugster then started to turn purple into it dispersed into purple data, leaving only the Gashat Kuroto dropped. The Rider regrets back to regular human size before going towards the Gashat. It glowed white and turned into a ball of light before coming towards him. He caught it as the card was formed with the Gashat in it. The Gashat was still blank, but it's possible to put a game in it for a future outcome.

Shroom: Ok. Time to get back to Ex-Aid's World.

The surrounding area then started to pixelate until it was swallowed in a blinding light. When the rider uncovered his eyes, he was back to the world. He closed his driver and removed his Gashat.

[Click to Save!]

He reverts back to Y/n as he takes notice of his surroundings to see a clear street.

Y/n: It's Quiet..too quiet. I better head to the E.R. That's where the group should be at.

He charged blue electricity before speeding away..

[With Dan Kuroto]
The God Wannabe is a little peeved of seeing Y/n deal with the Giant Bowser Bugster..

Kuroto: How can an Outsider prove to be this powerful? And that form.. How dare he creates a new Gashat without my permission!!

???: Perhaps that he has extra power

Kuroto turns to face Shade in his own place..

*I decided to make Shade himself like this for now on. Plus, I think it looks better*

Kuroto: Who are you supposed to be?

Shade: Let's say that in an alley in your quest for true Godhood ascension.

Kuroto: What make you think anything you have can complete my already Grade Billion?

Shade: Why not Grade Infinite?

Kuroto: Infinite?

The mysterious man then tosses an object that the deranged rider had caught. Kuroto takes a close at it and gains a sinister smirk.

Shade: I can see that you like the thing?

Kuroto: Yes. You have made your God very proud.

Shade: Heh..well, i hour you use it will.

The guy then create a shadow portal and enters it, leaving Dan Kuroto to himself with his new Prized possession.

[At the E.R.]
The Riders, including Taiga and Nico were discussing about what has transpired. Including Y/n and his Super Mario form.

Nico: *thinking about Y/n* How can an guy this strong looking have a form with my favorite game character?

Just as they were speaking, a blue soared in the room, making everyone jump. It only revealed to be Y/n himself..

Y/n: Hello.

Haima: H-how did you even get inside? The door was sealed shut.

Y/n: One: I can move at Lightning Speeds beyond the naked eye. Two: I can phase through any solid objects. For instance, the sealed does behind me. And finally three: *points at Parado* I traced Puzzle head's energy that lead me here.

Parado: *points at Y/n* You!

The Bugster then grabbed onto Y/n, and slammed him onto a wall, which barely fazed him.

Parado: HOW?? HOW THE LIVING FUCK YOU HAVE YOU GOTTEN THE BEST GAME AS YOUR RIDER FORM?!?

Emu: Parado, let him go!

Y/n: No, it's fine. I barely felt a thing.

Nico: I can't believe that you are Kamen Rider Ganbarizing.

Poppy: How did you get here?

Y/n: *creates a Dimension Wall for them to see before closing it* Through the dimension wall you just saw briefly.

Taiga: What brings you here?

Y/n: To help you deal with the Deranged "God" as he proclaims to be.

???: GANBARIZING!

This made everyone jump as Dan Kuroto them appeared on multiple screens. It's most likely a live broadcast throughout Tokyo as the deranged God Wannabe speaks:

Kuroto: Since your arrival to this world, you have committed a great sin by accessing a Gamer rider form that I never approved of..and i despise sinners. Which i why i suggest a comprise.

He then pulls out a regular Bugvisor with an unfinished Kamen Rider Chronicle gashat in it with the Gamedeus Disease and points it at a group of 30 civilians surrounded by horde of Genm Zombie's.

Kuroto: You have exactly one minute to show up to be purged of your sins. The same goes for you, Kiriya Kujo for opposing your God. Should you two not appear by my command, these group of people will meet their unfortunate end by the Gamedeus Disease.

Y/n: You bastard..

Kuroto: Clock's timing, Kamen Riders. Can you make it before time's up?

The transmission ends as everyone then started to speak.

Kiriya: This guy is really starting to get on my nerves.

Poppy: Is there anything we can do?

Y/n: Unfortunately, most of you cannot. Me and Kiriya have to face him.

Nico: But that guy will end up killing you if you go.

Y/n: We only got about 45 seconds before he does infect them with Gamedeus.

Kiriya: There's no arguing at this moment. Me and Y/n will go. Plus, we're wasting time.

Y/n: Alright. *grabs onto Kiriya* Hold on tight.

Y/n carried Kiriya and sped himself and Lazer to Kuroto's location. Nico and Poppy looked worried for Y/n going in there to fight Kuroto.

[Timeskip]
Kuroto stares at the frightened people on front of them. He looked at his watch just as he heard a whoosh.

Kuroto: Well..*turns to see Y/n and Kiriya* it seems you arrived on time.

Kiriya: We're here like you asked, Kuroto.

Y/n: Now, set these people free!

Kuroto: Yes, yes. I'm a man of my word.

He whisked his hand as the zombies disappeared and the people saw this as a chance to run from the madman. Y/n and Kiraya stand opposite of Dan Kuroto who looked at the two with Malice.

Y/n: Is there no end to your cruelty to humanity?

Kuroto: Humanity was already a failure. I refused to part of that failure.

Kiriya: It dosen't matter what you think of humanity, that dosen't give you right to play God!

Kuroto: *growls silently* If you keep on interfering.. I would have no choice but to permanently delete you both.

He raises up a recolor version of Maximum Mighty X, due to his likeness called: God Maximum Mighty X and pressed on the button..

[GOD MAXIMUM MIGHTY X!]

Dramatic Choral music was heard as Dan Kuroto floated in the air with a purplish aura around him and inserted the Gashat in driver.

[MAXIMUM GASHATTO!]

He opens the driver, and transforms into his Level Billion form but that's what he had done alone. In his left hand was a scarlet copy of Hyper Muteki..

Y/n: What the hell?

Genm: Oh, now you done it Ganbarizing. For showing up with an Unlicensed game of your creation, you've gone and forced your God...to evolve.

Y/n: *flips him off* Screw you and you God-Like entitled shit..

Genm: For That..You'll be the first i kill. *presses gashat*

[GOD HYPER MUTEKI!!]

Kuroto raises his hands into the air, taking in the beautiful piano music worthy only of a god's ears. Extending one arm and bringing it back to his chest, he grins in his helmet..

Genm: Grade Infinite..*eyes glowed scarlet* Fumetsu Dai Henshin!

He clicks in the Muteki Gashat with God Maximum Mighty X and pressed them, releasing a cover that showed what Genm's new power will be..

[DOCK-I~NG!]
[BA-KAAN~!]
[IM-MOR-TAL!!]

[Start Glittering! Like a Majestic Phoenix!]
[The Majestic Supreme Myth!]

[Absolutely Immortal Dan Kuroto!]

Genm's limbs retract into his armor, and the bulky suit shatters apart; leaving the glowing form of a red comet flying out of the remains of God Maximum Mighty X Armor. The bits of the suit begin to glow bloody red and swarm Genm's body, forming new armor layers over him. In the span of a few seconds, a light purple, black and crimson version of Ex-Aid's Muteki Gamer hovers before the two Riders below him..

*I believe this color scheme suits him better*

Kiriya looks on absolute shock of Genm acquiring a power up that surpasses Ex-Aid's Muteki Gamer..

Kiriya: Dear God.

Fumetsu Genm: Yes..I am a God.

Y/n: You're a God alright..a God that's about to be De-throned.

A card shoots out and the rider catches it without looking. It reveal to be a card with a Gashat called..Mighty Novel X. He used the Pixelator to bring the gashat to life in his hand.

Y/n: This..will be my Game changer. *presses Gashat*

[MIGHTY NOVEL X!]

Y/n: Henshin! *loads in gashat and opens driver*

[GASSHATTO!]
[GACCHAN! LEVEL UP!]

Y/n is now donned in a rider form that looked exactly like Ex-Aid Mighty Action Gamer 2, but the colors are are all black and white, aside from the eyes and chestplate..

Novel: If you wish to prove your Ascension..why not fight me?

Fumetsu Genm: Hmm..Very well.

Kiriya: You sure you wanna fight this guy on your own?

Novel: I'll be fine. Go help the people being attacked by zombies.

Kiriya: Alright. You better take this..*hands him the Bugvisor Zwei* You'll need it.

Kiriya then disappears in pixelated data as the rider turns back to Genm.

Novel: Let's go.

With that, Novel and Genm charged forward each other for a battle to decide this world..

[This is where I leave the first part. See ya next Chapter.]