Before we get into this, I must lay out some disclaimers:
1: I do not own Kamen Rider
2: Konosuba does not belong to me.
3: I own the story
4: you belong to yourself

Also, you're getting a new permanent superpower bonus.

[In the world of Zi-O]* a week later*
Tsukuyomi is looking at her Faiz Phone for information about the last time she saw Ganbarizing. She couldn't get him out of her mind and the fact that she kissed him.

Tsukuyomi: I can't believe I kissed him..and I didn't get his real name..

???: Hey, Tsukuyomi.

She turned to see Sougo coming towards her..

Sougo: Is there something on your mind?

Tsukuyomi: Well..it's about Ganbarizing.

Sougo: The one that rescued you from Hiryu?

Tsukuyomi: Yeah. I think...I think i like him.

[Meanwhile at Belzerg]

The Guild was relaxing after their battle with Verdia a few days ago. He was tough, but with Y/n's leadership, they all came victorious. About him and his party, they are doing some various things:

Darkness is working on her combat skills, Aqua is bickering with Kazuma about going on a dangerous quest, which he said no to, Ashley is at a blacksmith getting a new sword, Megumin is practicing her daily explosion spells with y/n in a wide open space..with a slight difference. Y/n, wanting to see her improve on her explosions decided to give her a copy of one of the WizarDrivers..

As well with Wiseman's Explosion Ring. Megumin was unsure of how this work, so y/n told her the basic instructions to use it.

Y/n: Ok. The black hand on the driver is called the Hand Author. You first switch the hand to the left side by using the shift levers on each side. Left is transforming. The right side is for casting spells.

Megumin: Whoa..

Y/n: Shift the hand to your right side by lowering the left shift lever and pulling the right shift lever up.

Megumin: Ok.

The mage then shifted the Hand Author to her right, as it began chanting..

LUPPATCH MAGIC, TOUCH TO GO! LUPPATCH MAGIC, TOUCH TO GO!

Y/n: Pleace the ring on you right middle finger and scan the ring.

Megumin looked at the driver and scanned the ring on her finger..

EXPLOSION!! PLEASE!

Megumin sees a orange glyph forming into her hands.

Y/n: Great. Now, combine this with your regular magic to cast your most powerful explosion.

Megumin then closed her eyes and aimed at a clear opening. She raised her staff close to the glyph as the magic from the object merged with her palm and with one word:

Megumin: EXPLOSION!!

A large glyph appeared further than six feet as it glowed bright before it released a loud Mushroom cloud explosion with double ringed shockwaves dispersing in the air.

Y/n had to shield his eyes due to the bright flash while Megumin stared in awe of what her explosion looked like..

Megumin: S-so amazing..

The shockwaves on the bottom were coming too quick

Y/n: Oh...SHIT!!!

They were both sent flying far away into some trees as y/n dangled from a tree branch while Megumin layed on the same tree on her back.

Y/n: Well..I'll give that explosion 500 points.

Megumin: Yeah!!! Wait..*gets up* I don't feel tired.

Y/n: When you infused some of your magic for the explosion, it left some of it own magic within you, so you can recover.

Megumin: EEEEEeeeee!!! that's awesome.

[Timeskip]
After cutting himself down, Y/n and Megumin head back to the guild where the others are chatting amongst themselves..

Y/n: We're back.

Darkness: Hey.

Ashley: Hiya, lover boy.

Kazuma: So, does anyone got plans to do?

Aqua: I plan on sleeping one off.

Darkness: I plan to go with Ashley. She told me that she can help improve by swordsman ship. What about you, Y/n?

Y/n: I'm thinking of going to one of the Kamen Rider World's.

Ashley: Really? Which one did you have in mind?

Y/n: I'm thinking about Kamen Rider Zi-O.

Aqua: is that where that "Another Zi-O" came to?

Y/n: Yeah. I thought to see if anything in that world is perfectly fine.

Kazuma: Was there anyone that "Another Zi-O" harmed before coming here?

Y/n: Yeah. Tsukuyomi.

Ashley: Tsukuyomi herself?

Y/n: That's right. And there's another thing I have to say. After i saved her from Hiryu and restored the village and everyone.. she kissed me.

Aqua: Really??

Ashley: She actually kissed you..on the lips?!

Y/n: *nods* I was motionless in shock, due to not excepting her doing that.

Kazuma: Damn..

Luna: Well..

Y/n turned to Luna coming his way..

Luna: Have you wondered why she did that?

Y/n: It kept lingering in my mind. Maybe when I get there..I'll find out myself.

Y/n conjures a Dimensional Wall to the World of Zi-O.

Kazuma: You be careful there.

Y/n: You know i will.

Y/n then enters the Dimensional Wall and it closed, leaving the others to themselves.

Megumin: Who is this Tsukuyomi woman?

Ashley: She's another Kamen Rider just like me and Y/n, but it looked like she didn't unlock her rider powers yet.

Aqua: Cool.

[In the world of Zi-O]
Y/n appears next to a empty sidewalk with many qpeople not noticing..

Y/n: Wow..I appeared from a portal and yet no one noticed. Isn't that some-

Due to bad time, he was crashed onto by another person running towards him. Both were sent onto the ground, groaning with Y/n's face buried into her "melons".

Y/n: *muffled* Ouch..

???: I'm so sorry!

Y/n heard that familiar voice and looked up to see Tsukuyomi again, but it appears to be wearing some workout clothes with a open yellow cap.

Y/n: Tsukuyomi?

Tsukuyomi: *sees him in surprise*
G-Ganbarizing?

Y/n: My real name is Y/n.

Tsukuyomi: Oh. *smiles* It's great to see you again.

Y/n: Same.. but can you get off me now?

Tsukuyomi realizing that she's on top of him in a "various" manner and blushed madly before getting off him.

Tsukuyomi: *fidgets* I-im sorry about that..

Y/n: *gets up and dusts himself off* It's fine.

Tsukuyomi: What brings you here to this world?

Y/n: I wanted to make sure that Hiryu didn't come back to hurt you or the other riders.

Tsukuyomi: That's sweet of you. And to be honest.. *walks close and grabs his hands* It's really nice to see you again.

Y/n: Well-

???: Hiya, sweetcheeks.

Y/n and Tsukuyomi looked around to see a group of 9 men coming really close. The one with the cap looks like the ringleader..

Y/n: Friends of yours?

Tsukuyomi: *narrows her eyes at them* No. That's Dazu and his crew. They are a cult that supported the Shocker Foundation.

Dazu: So nice that my future wife think highly of us.

Y/n: Future Wife?? Yeah, I don't think that's happening

Shocker Cultist#1: Quiet, Worm!! She is the Spouse of our leader and will be indebted to our cause.

Tsukuyomi: I will never be a part of you idiots!!

Dazu: Not when i'm done with you.

Y/n: *gets in front on Tsukuyomi* Look, douchebag, she said no. Nor will she ever join shocker..*shoves Dazu away from her* Now back the fuck off.

Dazu: Heh..*dusts himself off* Gentlemen, deal with this pest.

All of the bastards pulled out their guns and took aim at Y/n. Tsukuyomi looks scared of being shot..

Dazu: Last chance: Hand the woman over.

Y/n: *lighting courses in his eyes* How about you go to hell, Instead?

Dazu: Have it your way. Kill him.

Y/n tells Tsukuyomi to run as she did and he quickly summoned his Pixelator and his ridebooker shot out two cards in his hands and he scanned them both as the gang opened fired. The Cars pixelated and sent an explosive pulse that froze the surrounding area. Y/n saw everything slow down as his electricity turned into a shade of blue and surrounded him rapidly until he was covered in a bodysuit that resembled a Demonic creature with lighting bolts on the side and one on the chest..

Time resumed as Y/n focused and rapidly caught all the bullets with his left arm..

The gang stopped firing as Y/n slowly opens his hand, revealing the bullets he caught dropping to the floor

Zoom: N̷i̷c̷e̷ ̷T̷r̷y̷.̷

D-S member3: W-w-what the hell is that?

Zoom:  ̷Y̷o̷u̷r̷ ̷D̷o̷o̷m̷.̷.̷

Dazu: Take him down!

The Dark hero then jumps towards One of the men lunged forward for a punch, but Zoom kneed him on the gut. He sensed coming charging back and he gives them a back corkscrew roundhouse kick..

Y/n sees two more goons coming as they attack together with the ladder deflecting each blow. Even some with one arm behind..

With their guard open, Zoom legs sweeps the first guy, tornado kicks the second in the face, roundhouse kicks the thrid poor bastard and gives an upcoming cult member a Cartwheel Axe kick to the head

Zoom quickly kicks another, sending him flying, dodges gunshots from the air, before landing and sweeping one's leg. He dashed towards a cult member and gives him a punch that sent him flying to a wall, side kicked another close to him then the speedster dashed to the last two idiots and gives them a Cartwheel/B-twist kick combo..

* i miss this damn show*

Zoom:  ̷U̷p̷ ̷g̷o̷e̷s̷ ̷t̷h̷e̷ ̷W̷e̷a̷s̷e̷l̷.̷.̷

All 8 bastards were down groaning on the ground as Zoom unmasked himself and looked around to find Dazu.

Y/n: Tsukuyomi..

Y/n then sped to numerous locations, trying to find that crazy bastard. He had his Pixelator on automatically and a card was swiped before he appeared in front of Dazu in a forest..

Dazu: So you came

Y/n turned to see a frightened Tsukuyomi held at her neck. He also saw what used to be Dazu was a red Oni with silver hair, horns and a tiger tarp on the waist..

Dazu: Here's what's gonna happen: You are gonna get on your knees and back off while I walk off with my prize.

Y/n: And if I don't?

Dazu: My Claws will pave the streets red with her blood.

Y/n: You sick fuck.

Y/n closed his eyes and slowly gets on the ground, much to the smirk groaning on the Oni's face.

Dazu: Now, then..shall we be off?

He reached behind as his hand glowed before a red portal appear behind him and his "Bride".

Y/n: Before you go..there is only two words i wish to say to you, Dazu.

Dazu: Oh..and what can they be?

Y/n rolled his eyes up as they become dark and his voice was changed..

Y/n:  ̷C̷L̷O̷C̷K̷ ̷U̷P̷.̷.̷

[Clock Up!]

With the Powers of Zoom and Kamen Rider Kabuto, Y/n runs at the speed of light, grabbing Tsukuyomi out of the monsters hands, and broke his hand, shutting off his escape.

[Clock Over!]

Time was unfrozen as Dazu could feel that she was no longer in his hands. The gateway closed, due to his injured hand..

Dazu: *holds his bleeding hand* You-you took my bride.

Y/n:  ̷S̷h̷e̷ ̷w̷a̷s̷ ̷n̷e̷v̷e̷r̷ ̷y̷o̷u̷r̷s̷ ̷t̷o̷ ̷b̷e̷g̷i̷n̷ ̷w̷i̷t̷h̷.

Dazu: Then..you DIE!!

Dazu exploded large amounts of fiery flames at the speedster, which he dodged and swated them off anything that could destroy this town. Dazu then produced red electricity and dash at y/n. The young man re-masked to his Zoom persona and counters the Oni with his speed. Blow after blow woth traveling to different location, Zoom sees a opening and punched the red Oni down to the pavement, before using a building to speed to the ground safely. Dazu them gathers a lighting bolt and throws it at Zoom, who jumped over, grabbed the said bolt itself and threw it back at Dazu, hitting him square in the chest and sending him to a wall.

Zoom then speeds towards him and lays down electrified punches so hard, they sounded like shotgun rounds firing. He laid one final punch to his spine, where a sickening crunch can be heard..

Dazu, visibly beaten and broken crawled to the floor trying to escape from the Speedsters wrath..

Dazu: T-this can't be. I'm suppose to be the strongest Oni of all. How can I lose to a weakling..

Zoom:  ̷Y̷o̷u̷r̷ ̷o̷v̷e̷r̷c̷o̷n̷f̷i̷d̷e̷n̷c̷e̷ ̷a̷n̷d̷ ̷r̷e̷l̷y̷i̷n̷g̷ ̷o̷n̷ ̷l̷a̷c̷k̷e̷y̷s̷ ̷f̷o̷r̷ ̷y̷o̷u̷r̷ ̷w̷o̷r̷k̷ ̷p̷r̷o̷v̷e̷d̷ ̷t̷h̷a̷t̷ ̷y̷o̷u̷ ̷w̷e̷r̷e̷ ̷t̷h̷e̷ ̷w̷e̷a̷k̷ ̷o̷n̷e̷.̷

Zoom walks close to the broken Oni and turns him around, so the monster can see the cold dark look in the Speedsters eyes as he vibrates his hand

Zoom:  ̷H̷o̷w̷e̷v̷e̷r̷.̷.̷.̷

Dazu: W-what?

Zoom:  ̷I̷'̷l̷l̷ ̷g̷i̷v̷e̷ ̷y̷o̷u̷ ̷t̷h̷i̷s̷ ̷o̷n̷e̷ ̷c̷h̷a̷n̷c̷e̷ ̷t̷o̷ ̷l̷e̷a̷v̷e̷ ̷t̷h̷i̷s̷ ̷w̷o̷r̷l̷d̷.̷.̷a̷n̷d̷ ̷n̷e̷v̷e̷r̷ ̷c̷o̷m̷e̷ ̷b̷a̷c̷k̷.̷.̷

Dazu: Y-yes, of course. I'll never return here. I'll dismantle the cult.

Y/n: *unmasks himself and eyes turn normal* You better..

Y/n turns to Tsukuyomi and walks back. Unknown to him, Dazu carried a green bottle and crushed it, allowing the green liquid to heal his wounds and broken back. With this restored, he takes out a burning knife for a backstabbing kill and goes to him. Tsukuyomi sees the Oni attempting to end y/n:

Tsukuyomi: *screams* Y/N, BEHIND YOU!!

As Dazu tries to bring the burning knife to y/n's neck, the young man caught the knife inches before it actually punctured him. Dazu felt dread coursing his veins as Y/n kicked him 3 feet away.

Y/n turned to him with his eyes turning complete black..

Y/n: S̷o̷ ̷U̷n̷w̷i̷s̷e̷..

Dazu: N-no..

He turned to sprint away using his fire, but y/n speeds in front him grabbing his neck and piercing through his heart with his Vibrating Stab..

Dazu: *shakily gasps*

Y/n:  ̷I̷ ̷g̷a̷v̷e̷ ̷y̷o̷u̷ ̷a̷ ̷c̷h̷a̷n̷c̷e̷ ̷t̷o̷ ̷l̷i̷v̷e̷.̷.̷a̷n̷d̷ ̷y̷o̷u̷ ̷f̷u̷c̷k̷e̷d̷ ̷i̷t̷ ̷u̷p̷.̷.̷

He removed his piercing vibrating hand from the Oni as the monster felt himself breaking. He looked to see that his whole body was turning to floating amber.

Dazu: No..no..AAHHAHHHHHH!!!

Dazu's body complete disappeared from this earth, leaving Y/n and Tsukuyomi to themselves. The young man turned to the girl.

Y/n: *grasps her shoulder Are you ok?

Tsukuyomi: *holds herself a bit* Y-yeah.

Y/n: At least he is gone.

[Timeskip]
After all the goons were taken care of by the police and the young man changing his clothes back, Y/n and Tsukuyomi were walking to the clock store with with the said girl holding onto his right arm..

Tsukuyomi: Thanks for what you did back there.

Y/n: Anytime. I really do not like harassing, and they got what they deserved.

The two then appeared in front of the 9-5 DO clock repair shop..

Tsukuyomi opened the door and they were greeted by the shop owner..

Junichiro: Hello.

Tsukuyomi: Hello, Mr. Tokiwa.

Junichiro: *sees y/n next to her* Who is this?

Y/n: Y/n L/n..it's nice to meet you.

Junichiro: *smiles* It seems that you found someone you had a liking to, Tsukuyomi.

The girl gained a blush on her face, as y/n tilts his head to the left..

Y/n: Liking?

???: Hey, Uncle Jun.

The three turn to see Sougo, Geiz and Woz coming their way..

Sougo: You wouldn't believe-*sees Tsukuyomi with Y/n* what..happened downtown..

Geiz: Umm, who is this?

Junichiro: This is Y/n..he's a special friend of Tsukuyomi.

Y/n: Hi.

Sougo: Are you really Kamen Rider Ganbarizing?

Instead of replying, Y/n summoned his Ganbaride Driver on his waist, much to the shock of the three ridewatch riders.

Woz: So it's true..

Geiz: What made you become Ganbarizing?

Y/n: Someone was in danger from being robbed and nearly shot to death, so I stepped in, stopped the bad guy and kept him from robbing the store. Unfortunately, I also been ridiculed with bullets.

Sougo:  Thats terrible..

Y/n: Upon the afterlife, I met an Unknown Goddess that offered me the Powers of Ganbarizing of my own kind and to be the defense of the new world I was resurrected to. And well.. thats when I started being a Rider.

Woz: If I can ask something?

Y/n: Go ahead.

Woz: What can Ganbarizing do exactly?

Y/n: Just like Kamen Rider Decade and Zi-O themselves,  I can use a said Rider's powers and ability, based on whatever I pick. Here, I'll show you guys one.

Y/n took out two rider cards with Zi-O and his fan-made form from last time and scanned it on his driver, shifting it into the ziku driver with the Zi-O Ridewatch and Regal Zi-O watch as well..

Sougo: Regal Zi-O??

He loads both Ridewatches in the driver, clicks it open and holds it ready to spin..

Y/n: Henshin! *spins the driver 360°*

[RIDER TIME!]
[KAMEN RIDER ZI-O!
[REGAL TIME!]
[SUBETE NO RAIDĀ NO SAIKO NO O!]
[KAMEN RIDER REGAL ZI-O!!]

This brought out major shock to the Owner, Geiz, Woz and most of all Sougo, since he never saw something like this before.

Regal Zi-O: So.. what do you think of this form.

Geiz: It feels like the polar opposite of Ohma Zi-O..but with more positive energy.

Sougo: What created this power?

Y/n: The Fusion of Grand Zi-O and Oma Zi-O Ridewatches and Newfound energy from my driver.

???: Well..

The riders turned to see Tsukasa casually walking in the room..

Tsukasa: That is quite surprising..

Regal Zi-O: And I can assume that you seen my fight with Hiryu, right?

Tsukasa: I have. It's quite extraordinary if you ask me.

Woz: Is it possible to show us that fight?

Tsukasa: Of course.

Tsukasa emitted a Dimensional Wall of his own and it showed the fight y/n had with Hiryu. It came to the point where Y/n was displaying the full use of his Regal Form, as well as using Ohma Zi-O's power, but a fusion of Oma Zi-O and Grand Zi-O combine. With their power combined with their finishers, they sent Hiryu flying away and restored everything he destroyed,  even brought back the civilians he killed. It went off as they were bewildered of Y/n's Sheer power.

Woz: A-a-a...

Regal Zi-O: hmm?

Woz: *inhales and raises arm forward* IWAE!!

Regal Zi-O: *jumps from shock*

Woz: Coming from the Beginnings and lasting through the Ends, a new facet of power has been achieved! He is a brave spirit guided by the heroic memories of Riders past!, and he is powerful enough to create his own original form, the Next Rider Emperor: his name is Kamen Rider Ganbarizing Regal Zi-O Form! May history always remember this moment of glory, forever.

*credit goes to BuildFalcon*

Sougo: Emperor?

Y/n: *de-henshins* Emperors are generally recognized to be of the highest monarchic honour and rank, surpassing those with the rank of kings. I believe the reason Woz called me Emperor is that i can use way more rider forms than any rider in history, i can create fan-made forms that can prove superior, and..thats pretty much it.

Geiz: Whoa.

Sougo: That's.. That's so amazing

Y/n: Now with my visit to be over, it's time for me to go home.

Sougo: Well, that's a shame. It was nice seeing another Zi-O user.

Y/n: I'm sure we will meet once more.

Y/n created a Dimensional Wall to head home. He would've if Tsukuyomi didn't grab his arm.

Tsukuyomi: Wait!

Y/n: Yeah?

Tsukuyomi: *twirls her fingers* W-will it be ok if I go with you to meet your friends?

Y/n: Really? Well, sure I don't mind. 

Woz: It was nice to meet you, Ganbarizing.

Y/n: The same to the rest of you. You ready?

Tsukuyomi: Yeah.

Both he and Tsukuyomi entered the wall before it closed.

Sougo: This Y/n really is something..

Woz: He sure is, my lord.

[At Belzerg]
A dimensional wall appeared in front of a open grassy field as they walked out of it.

Y/n: Home sweet home.

Tsukuyomi: This world seems peaceful.

Y/n: I would not say that..

Tsukuyomi: What ma-

She was cut off by a slimy pink tongue as wrapping around her waist and yanking her away. Y/n gained a horrified look and sees a screaming Tsukuyomi flying into a toad's mouth and is slowly being swallowed alive..

Y/n: Oh, HELL NO!! *Charges towards the toad with electrified hands* DON'T GET EATEN!!

Y/n: KONOSUBA!!

After dealing with the frog by making it explode with electricity, Tsukuyomi was crying, not only but being eaten, but is now covered in slime.

Y/n: Sorry about that. I did mean that it isn't always peaceful.

He sees more toads coming their way. Not wanting to be prey any longer, Y/n picks up Tsukuyomi princess style

Y/n: Let's get outta here.

Y/n then ran, leaving a lighting blue trail away from the Toads line of sight. They appeared in the guild, much to the shock of everyone.

Luna: Y-y/n. What a shocking surprise.

Y/n: *puts Tsukuyomi down* You can say that.

Luna: *sees Tsukuyomi with him* Who is she?

Y/n: She's the woman I saved from the "Another Zi-O" Quest..and I just saved her from being eaten by toads. Can she use the showers here?

Luna: Of course. I can take her.

Tsukuyomi: Thank you.

She and Luna then walked towards the women's shower as Y/n then used his phasing ability to make the slime fall off him..

Y/n: Disgusting

As he was about to go for down and relax, he heard a voice..

???: So I was right..

Y/n turned, only to be met with a lighting fist to the face, that sent him flying through the doors and crashing into multiple walls, causing most people to run away screaming..

Y/n: Aw...damn it.

???: I actually found a Speedster in this time.

Y/n turned to see a figure wearing a white bodysuit with yellow lining, golden gloves, lighting bolts on each side of the mask, glowing white eyes and a golden bolt on the chest..

*What his suit is and mostly because i like it better*

Y/n: Who in the living hell are you?

???: I am a God. The God of Speed.

Y/n: So, Godspeed. Great, another dumb fuck with a God Complex.

Godspeed charged lighting in his hands and expelled it at y/n, sending him crashing to a tree, breaking it in half as it fell.

Godspeed: Watch who you are speaking to, insignificant mortal!

Y/n: Yeah, how about I beat your ass instead?

Y/n raised his right hand forward and it showed a ring with a lighting bolt logo similar to the Suit..

Godspeed: Have you come to give me what's mine?

Y/n: Catch me first..Faker.

Y/n thrusted his ring forward as his suit shot out and he ran into it, quickly becoming Zoom as Godspeed took chase.

Zoom: *inner thought* Where the hell did he come from?