Kamen Rider from the ancient times

The Time-Space Demon Machine quickly arrived above the pillar of darkness.

Tokiwa Sougo was slightly surprised to see the Humagears launching a massive attack below through the electronic screen, but then he thought that since his school had been occupied by the Humagears, the situation here seemed quite reasonable.

Furthermore, it seems quite reasonable for Kawahara to carry out indiscriminate bombing of this area...

Even blowing up the world...

Tokiwa Shogo suddenly shivered.

"What's going on here?"

Meikoin Gates and Tsukuyomi, who were standing nearby, were both shocked. Woz walked over and looked at them, raising an eyebrow slightly: "It seems there are other outsiders in this world."

This is already obvious.

To prevent the situation from spiraling out of control, Tokiwa Sougo handed the Time Machine over to Meikoin Geiz to operate, and then jumped out of the hatch himself, with Tsukuyomi following closely behind.

With a very forceful approach, the Humagear army was temporarily kept outside the vulnerable base.

Yua Yaiba and Isamu Fuwa, who were already planning to transform into Kamen Riders to fight, exchanged a glance, with the former looking at Kawahara with some wariness.

"you……"

Just as she was about to say something, Kawahara suddenly looked up at the sky, and Yua instinctively followed suit.

But there was nothing in the boundless sky.

However, the space around them froze the next moment, flickering strange color differences like a television with a faulty signal. Everyone was frozen in place, time stopped, and only a few of them were able to move freely.

"What's going on?"

Feidian or Ren stared in disbelief at their surroundings.

Kawahara then turned around and saw a familiar man and woman walking towards them.

“Mr. Kawahara!” Tokiwa Sougo greeted him.

"Hello..." Tsukuyomi nodded slightly.

Kawahara nodded and said, "You came here because you must have already discovered the Otherworld Zero-One."

Upon hearing this, Tokiwa Sougo paused, then chuckled awkwardly, "Actually, it was Woz who discovered that our world seems to be merging because of the birth of Zero-One, so we came to him to find out what's going on."

"Oh, I see. Looks like his day was pretty eventful." Kawahara remarked.

Because he originally came to see Hiden Aruto.

It just so happens that everything happened at the same time.

In an instant, all three eyes were focused on Hiden Aruto, who pointed to himself with a blank expression.

Tokiwa Sougo smiled and extended his hand to him: "Hello, I am Tokiwa Sougo, Kamen Rider ZiO!"

"Oh, I am Hiden Aruto, Kamen Rider Zero-One!"

Hiden Aruto quickly shook hands in return.

He then slowly looked at Kawahara beside him and tentatively asked, "Um, it seems like I haven't asked yet... who are you?"

Kawahara paused for a moment: "Didn't I say that?"

"no!"

"..."

Kawahara paused: "Kawahara."

Then, a strange silence fell over the room.

Tokiwa Sougo looked at the bewildered Hiden Aruto, then smiled and filled in the gaps in his understanding: "He's also a Kamen Rider, Kamen Rider Aguru!"

Hiden Aruto then seemed to suddenly realize what was happening.

So a group of Kamen Riders suddenly approached him because the world had been taken over by Humagears?

"We've been looking for you."

Tsukuyomi then explained, "The world is probably the way it is now because the Time Jackers interfered with something in the past and changed history."

Kawahara then looked at Tokiwa Sougo: "Since you've already come looking for us, let's just go back twelve years and quickly take care of that outcast Zero-One."

Tokiwa Sougo asked with some surprise, "Kawahara-san, do you already know what happened?"

"Hmm, I'm just one step ahead of you." Kawahara turned and walked towards a certain place, and the next moment, the huge spacetime demon machine landed right in front of him.

As Meikoin Gates watched the man approach through the screen, unpleasant memories flooded back, and even Woz's expression became somewhat strange.

if you can……

They really didn't want this person to hitch a ride.

The two, who usually don't get along, surprisingly reached a consensus.

Tokiwa Sougo then extended an invitation to Hiden Aruto: "Let's go, we must restore history to its original state!"

Hiden Aruto couldn't help but wonder: "Change history? But how is that even possible?"

"It's possible!"

Tokiwa Sougo smiled confidently: "With your memories and our power, we can definitely do it. Trust us, for the sake of this world!"

After making a serious eye contact with Tokiwa Sougo, Hiden Aruto seemed to gain courage as well, and he nodded confidently: "Okay!"

He then looked at Izu, Yua, and Isamu, and smiled at them.

"Don't worry, I will definitely save everyone!"

"Although I think all of this is outrageous, we have no choice but to trust you in this situation." Ren Yua sighed.

“Feidian Intelligence is a bunch of bastards, but if you really can change history, then go for it!” Fuwa Isamu said heavily.

Izu said nothing, but looked at Hiden Aruto with her usual clear and trusting gaze.

After bidding a solemn farewell to his comrades who had once fought alongside him but were now strangers, Hiden Aruto turned and left with Tokiwa Sougo.

……

Inside the Time-Space Demon Machine.

Kawahara looked at the young man.

"Kamen Rider Zero-One..."

As a Kamen Rider, he certainly possesses the courage to face adversity head-on, but courage alone is not enough to protect the world.

A world where humans and Humagears live together.

This is really a dangerous setup.

Kawahara withdrew his gaze and looked down at the golden emblem that appeared on the back of his left hand. This power had been subtly fluctuating ever since he encountered "Kamen Rider Zero-One".

A certain void that had previously been completely undetectable seemed to have reconnected.

He suppressed his thoughts for the moment, then turned his head to look again, only to see two people beside him, one looking at him with disdain and the other backing away, about three meters away.

"how?"

Kawahara looked at them with great interest: "You make me sound like some kind of terrifying thing. You're at least the Demon King's retainers."

"Who is the Demon King's retainer?!" Meikoin Geiz immediately retorted.

"Alright, let's not talk about this for now—"

"Hey! Get this straight, I'm not a retainer of ZiO!"

"When you came to this world, did you encounter a world destroyer?"

"..."

Just as Meikoin Geiz was about to continue arguing his point, he stopped abruptly. Unpleasant memories resurfaced in his mind, and his eyes immediately revealed an even greater sense of disgust than before.

Woz snapped out of his daze: "No, my [Oma Tsukaima: Advent of the Demon] has become like this because it merged with the world of Zero-One. There are no other records on it besides Zero-One, but this matter should have been done by the Time Jackers—what does it have to do with Decade?"

The fusion of Kamen Rider worlds is a significant matter for his Demon King, and if it's too big, it could even affect the power of Oma Zi-O. Woz is being quite cautious.

Kawahara stroked his chin: "It shouldn't have anything to do with Decade, but that guy disappeared after he came over, and I'm a little uneasy."

The last time Tsukasa Kadoya disappeared in a way that made him uneasy...

They created an event that changed the course of history.

What about this time?

...(End of chapter)