The students were already among their class as they were anxious for their results, as for Y/N, he was still wondering on what his counterpart had told him. He took out his phone as he decided to tell the other riders what will happen.

After the brief text that he had sent to his friends, he took his attention to the screen, seeing that the names of the students have passed has been posted, he hurriedly scanned the names and soon enough, his name was up on the board.

Y/N: Well, damn, I guess I did it.

He said softly as he flashed a small smile, seeing some familiar names on the board, the only problem is, two of them were missing, and it was Todoroki and Bakugo. He decided to take a brief look at them as a student from Shiketsu were apologizing to Todoroki as for Bakugo, he was, quite worked up about not passing.

Y/N: Todoroki was self-explanatory, I witnessed how he acted from the fight, as for Bakugo, probably he yelled at some civilians and told them to save themselves or something.

He sighed as he was now satisfied at his performance, he chuckled as he made his way to the lockers to get changed. After a couple of moments later, he was walking towards the bus, carrying his briefcase and looking down on his new Provisional License.

Y/N: Guess I am formerly known as "The Vigilante".

He chuckled to himself as he puts the ID away as he got inside the bus, sitting down as he looked at the window, knowing what will happen about the Aku situation that he will have.

The drive was quite steady as moments later, they arrived back at UA making their way to their dorms to wash up and relax after a tiring day at the exams. Nightfall came as the students were having some time to share their experience today. Y/N didn't waste any time as he made his way to the door.

Iida: Y/N, where do you think you're going?

Y/N: Outside, going to take a walk. I'll be back before curfew so don't worry.

He said as before the class president can even answer back, he was long gone. Unknowingly to him, two other students snuck outside as well.

In an open field of the school grounds, two figures were standing, checking their phones as the H/C haired teen arrived at where they are meeting up.

Jack: Finally! Took you long enough!

Y/N: Sorry, you know, Iida.

Senkai: Justifiable.

Jack: Anyways! I passed, well, no surprise there. How about you Y/N?

Y/N: Same here.

He said as they both cheered as shortly after, a sound of clapping was heard as out from the shadows, Aku appeard.

Senkai: Aku!

Aku: Oh? Did I spoil your celebration?

Jack: How did you even get in here?

Aku: With a face like Y/N, security isn't a problem for me.

He explained as Y/N looked at him.

Y/N: Here we are, and I know you want to fight us. Problem is, if you even make a noise, I'll be sure a teacher will be alerted.

He explained as he wasn't done.

Y/N: You said you have a special place for it. Then where could it be?

Aku: Ah, perceptive as always. I won't be coming here without a plan, and I'm sure hell I will bring the fight to you.

He said as with a snap of a finger, the scenery changed. But to the other three riders, nothing changed, not one bit.

Aku: In case you were wondering what happened, I took you to somewhere very familiar.

Senkai: Nothing changed, is this some kind of a joke?

Aku: Do you recall the Mirror World?

He asked as the other two riders were puzzled, as for Y/N.

Y/N: This is were Kamen Rider Ryuki and his associates fight to the death until one of them remains, keeping a woman named Yui as their prize. But, it was changed once Miss Yui convinced his brother to alter it, thus, this is nothing more than a wasteland now.

Aku: Well, I guess one of you isn't that stupid than I thought.

He said as Y/N was even surprised that his counterpart can even bend the rules of the Mirror World without even turning into one of Ryuki's Rider.

Aku: Nothing will affect the outside world, so, you better stick that to your thick heads of yours.

He said as he grinned as he moves his arm to the side.

Aku: Shall we start? Ryuga.

A black Advent Deck appeared as it much resembles to Ryuki as the other three riders got ready.

Y/N/Jack/Senkai: Build!/Cross-Z!/Grease!

The three of their devices appeared with Y/N having the RabbitTank Sparkling, while the two of them have their Sclash Drivers and Jellies ready. Y/N shakes the can while the other two placed the jellies on their drivers as Y/N opened up the can and placed it on the driver's slot.

Build/Sclash Driver: RabbitTank Sparkling!/Dragon/Robot Jelly!

Aku: Make it interesting.

He said as they made some hand gestures as they looked at one another one final time.

Y/N/Jack/Senkai/Aku: Henshin!

Build/Sclash Driver: (Techno rock music) Shuwatto hajikeru! RabbitTank Sparkling! Yea-Yeah!/Tsubureru! Nagareru! Afurederu! Dragon in Cross-Z Charge! Buraa!/Tsubureru! Nagareru! Afurederu! (Epic orchestral music) Robot in Grease! Buraa!

As the four riders finished transforming to their forms Ryuga pulled a card from the deck as he placed it on his Dark Dragvisor.

Dark Dragvisor: Adobento!

A dark version of Dragreder appeared as it started to dace around Ryuga.

Ryuga: Make his two lackeys busy, I'll handle the main character.

Build: It's me that he wanted.

Grease: You're crazy!

Cross-Z: No time, dragon incoming!

He said as the dragon dashed pass Build and went to attack Cross-Z and Grease, separating him from the both of them.

Ryuga: It's you and me, try to keep up.

He said as Build started to dash towards Ryuga, having his secondary form, means that he has a chance. But, that's not the case.

Build started to throw punches at Ryuga in which he casually dodges it, moving away or blocking any attacks that Build can dish out as he started to attack back. Throwing a strong jab on his stomach as Build felt the wind knocking out of his system as he throwed another punch, planting him on the ground.

Ryuga: This wouldn't take long, and here I am thinking that you actually improved.

He laughed as he kicked Build, sending him flying a few feet away as he walked towards him.

Ryuga: To top it all off, you don't have any transformation left, you have at least half of your original strength left.

He stopped as he looked at Build, struggling to stand up as he looked at other riders, having to manage fighting on his Advent.

Ryuga: Looks like they improved, at least temporarily. Let's wrapped this up.

He said as he draws out another card as he places it on his Dark Dragvisor.

Dark Dragvisor: Fainaru Bento!

His foot started to flare up as Dark Dragreder started to appear, swirling around Ryuga as he started to float up as the other Dark Dragreder coiled Cross-Z and Grease to witness the destruction of their friend.

Ryuga: Game over!

Cross-Z/Grease: Y/N!

Ryuga extended his foot as he started to dash towards Build with Dark Dragreder leading the charge as his foot made contact with Build, explosions went off as Ryuga float down on the ground.

Ryuga: Nothing can stop me now.

He said as the two riders were shocked at what they have witnessed, they couldn't save him in time, yet, they were still weak that they weren't strong enough to even beat an overgrown lizard.

???: Jump!

Amidst of the smoke, a green light shined bright as a figure of Y/N was seen, standing as he was holding a device on his hand.

Ryuga: How are you still standing!

He yelled as he was shocked at what he just saw, as Y/N placed the Progrise key on the belt as a sound was heard.

01 Driver: Authorize!

Ryuga: You're at your limit! This isn't fair!

Y/N: Nothing is fair, let's just say.

He paused as he gets into position for an another transformation, hearing a beep as his watch started flash up.

Y/N: I'm just one step ahead of you now. Henshin!

He said as he puts the Progrise key in the 01 Driver as he begins transforming.

01 Driver: Progrise! To-bia ga rise! Rising Hopper! A jump to the sky turns to a Rider Kick.

His armor now was a perfect replica of Hiden Aruto's armor having to access the Zero-One form was new to him, as he is now a wielder of the First Reiwa Era Kamen Rider.

01: There's only one person who can stop you, and that's me!

He said as Ryuga wasn't happy about the turn of events as he charges straight to 01 throwing a punch as 01 just kicked him away walking towards him as Ryuga regained his footing.

01: Not impressed.

01 said as he jumps straight ahead, getting in front of Ryuga as he throws a punch making contact with it as he was ready to close it down.

01: This ends now!

He yelled as he presses the button on the progrise key.

Progrise Key: Rising Impact!

He got ready as he charges at Ryuga, kicking him up as Ryuga failed to block it, sending him upward as 01 jumps up and kicks him down, extending his foot as he charges back down at high speed, making contact with Ryuga as the battle was now over.

01 Driver: Rising Impact!

The Mirror World shattered as 01 landed to the ground, leaving Aku in pain as the Advent of Ryuga was now gone.

Aku: I should have won!

He said as he slowly started to stand up as Jack and Senkai went to Y/N, looking at Aku as a portal started to take him.

Jack: Should we let him go?

Senkai: Don't be the obvious one, you saw the portal right.

The both of them bickered as Y/N was quiet, having to access a new form that came across with Aruto as being the first one to give it to him was nothing of a surprise, he looked up to the sky as he let out a sigh.

"Thank you, Aruto."