Infinite Evolution of Kamen Rider

"In order to show respect for both your strength and your character, I will fight with my full power!" Ryuga declared solemnly.

The Old Demon King extended a palm, signaling for him to proceed.

His silence was not disdain—on the contrary, it was a mark of approval.

Ryuga had shown respect, and the Demon King recognized it. Though he could sense the immense power surging within Ryuga, he was confident the young warrior still wasn't his match.

To face the King of All Devils, Ryuga knew the forms of the legendary Riders were no longer sufficient. So, he drew his trump card—a transparent, crystal-like Full Bottle.

"I don't even know how strong I am at full power... I've never tested it," he whispered, staring at the bottle before fastening his belt.

[EvolDriver!]

"Then let's begin." Ryuga inserted the transparent Full Bottle and a grey System Bottle into the drive.

[Unlimity! RiderSystem!]

(Note: "Unlimity" is a coined term derived from "unlimited"—as is common in Rider shows. It may not be a real word, but it captures the spirit. Consider it stylized.)

"Black Hole Trigger!"

[OverTheEvolution!]

Ryuga pressed the trigger above the belt and rotated the joystick.

[Are you ready?]

"Transform!"

The moment he began turning the joystick, the sky within a one-kilometer radius suddenly shifted—not to darkness, but to a cosmic starlit expanse filled with radiant celestial bodies.

[Rising Up the Throne, Lighting Up the Divine Fire!]

As he crossed his arms over his chest and pushed them outward in his iconic transformation pose, the stars above coalesced into nine glowing celestial dragons.

They let out an echoing roar before diving, spiraling downward from the sky, burrowing into the ground, then bursting upward beneath Ryuga. They raised him aloft, forming a throne made of starlight and scale—a Nine-Dragon Throne—that hovered beneath the vast starfield.

[Devouring Everything, Unlimited Evolution!]

A blinding radiance poured from the stars, engulfing Ryuga in intense light. His body seemed to burn like a new sun, his silhouette sharp against the cosmic canvas.

Suddenly, the light exploded like a brilliant firework.

[This Moment Is the Ultimate Time!]

As the final sound effect echoed, Ryuga completed his transformation.

Kamen Rider Evol – Infinite Dragon Form!

High above, surrounded by celestial glory, the newly transformed Ryuga sat upon his throne, silhouetted against the swirling galaxy. Even the Demon King twitched his lips in disbelief.

"Isn't this a bit... excessive? You're just transforming, not filming a movie! Do you really need all this?"

He had always believed his own transformations were impressive, but this—this was something else. Just based on visual impact alone, the Demon King had to admit: You win.

Moments later, Ryuga descended gently to the ground, and the cosmic illusion vanished. The sky returned to its calm, bright state.

Now, clad in armor that shimmered like crystal and reflected silver specks of light, Ryuga stood tall. His head, shoulders, chest, arms, knees, and shins were encased in brilliant diamond-like plating over a sleek, black bodysuit. His helmet gleamed gold, shaped like a dragon's head, and a regal skirt extended from his waist—part armor, part cloak.

They say:

A cloak marks the strong,A skirt marks the king,Flowing hair marks the invincible boss,And clasped hands behind the back mark the true demon king.

Ryuga had two of the four—and he looked like all four.

Strength may be temporary. But style? That's eternal.

There was no need for more words. He moved immediately, eager to test the limits of his new power.

The transparent Full Bottle—dubbed the "Infinite Bottle"—was forged from every power he had acquired: Evol's cosmic might, Tsukuyomi's temporal abilities, the strength of the legendary Riders, and the demonic energy of the King of Devils.

But only his own evolution-based power and Evol's cosmic strength were complete. The rest were still fragments.

He had only partially absorbed the abilities of the legendary Riders—primarily the main Riders. Secondary Riders were still untapped. Tsukuyomi's time powers had barely begun to take root. As for the Demon King's power, it was still beyond his grasp due to its immense complexity.

There was, however, a shortcut: gain the Demon King's acknowledgment.

If he could earn that, then by the King's own pride and honor, he would receive the full inheritance of that demonic strength.

With a powerful leap, Ryuga appeared before the Old Demon King and threw a punch. The King caught it easily—but the ground beneath them cracked violently, deep fissures spreading across the earth.

It was raw, unrefined force.

Such uncontrolled power was rare. Knights or monsters of a certain level could do this, but usually didn't. They had precise control—wasting energy on the terrain was inefficient.

Clearly, this was Ryuga's first time wielding such massive strength. The Demon King understood immediately—and decided to help him grow.

He chose not to use magic or other unfair advantages. Instead, he would meet Ryuga's strength head-on, relying only on his body.

And that body was formidable: the Demon King's base stats were among the highest of all Riders. A single punch could crush hundreds of tons. A casual kick could level mountains.

For a newly awakened Infinite Form, it was an overwhelming challenge.

Still, Ryuga was undaunted. He knew this was only the beginning. He was just getting started—and thanks to his power of Devouring Evolution, his potential was limitless.

Letting go of all restraints, he launched a full-on assault.

If the Demon King could take it—then so be it. Hit him with everything!

Every punch, every kick roared with unleashed power. Though the Demon King remained untouched, the world around them did not.

The once-level plain where they stood was now a ten-meter-deep crater, a newly formed basin carved from pure force.

And this was only the beginning.