Infinite Evolution of Kamen Rider

Tan Li Dou, the king of modern society, quickly attracted the attention of Tokiwa Sougo—who also dreamed of becoming a king. Fascinated, Sougo chose to follow Tan Li Dou under the pretense of "observation and learning," which only intensified the tension between him and Geiz.

Then came the plot twist—Sougo, who normally couldn't beat Geiz, suddenly overpowered him and delivered a satisfying beatdown. Viewers might've muttered "what the hell?" but the story had its own rhythm.

Naturally, as the protagonist's "good friend," Geiz declared he'd kill Sougo. But as soon as Sougo gave a half-hearted explanation for his so-called betrayal, and conveniently apologized in time, Geiz—having the emotional range of a shonen rival—instantly forgave him. The beating? Forgotten.

After all, falling in love and fighting to the death is just another day in the life of a protagonist and his secondary lead.

A few days later, on November 18, 2018, the clock chimed five times in the darkness of the night.

"Sougo, heading out again?" asked Junichiro Tokiwa, Sougo's cheerful uncle, as he noticed Sougo and Tsukuyomi getting ready to leave.

The Tokiwa Watch Shop, also Sougo's home, was no ordinary place. Junichiro was a quirky watch repairman who could fix anything—watches, trains, even time-traveling mecha. As long as he considered it a "watch," he could work his magic.

"Yeah," Sougo nodded. "We're going to bring Geiz back."

Though Geiz had forgiven him days ago, he later felt he'd made it too easy. After all, people often take for granted what comes too easily. So, he ran away from home—perhaps hoping Sougo would come chasing after him, like any good tsundere would want.

"Let him be, Your Majesty the Demon King!" said Woz, ever the loyal retainer, who entered dramatically with a flourish. He was holding an old alarm clock.

"Could you fix this for me?" he asked, handing it to Junichiro.

"Sorry, this is a watch shop. We don't fix—wait, is this an alarm clock?! Please, leave it to me!" Uncle Junichiro was about to decline, but his eyes sparkled as he snatched the clock with glee.

Despite the shop's name, watches were the least-repaired items there. So when someone finally brought in something that technically was a clock, the man was overjoyed.

"..." Woz stared silently, then turned to Sougo. "But, Your Majesty, why are you so intent on getting Geiz back?"

"My friend's gone. Of course, I'll go find him," Sougo said with a carefree smile.

"But my book, The Advent Calendar of the Demon King, makes no mention of Geiz playing a role in your path to domination!" Woz protested, holding up his mysterious tome that records the King of Time's destiny.

"Maybe," Sougo replied. "But I want him with me because I intend to be a good Demon King."

He walked out without another word.

"Eh? Back already? Did you forget something?" Tsukuyomi asked in confusion as Sougo, who had just left, came walking back in.

"Hmm…" Sougo's eyes darted around until he grabbed a magazine. "There's a report here about members of a dance troupe mysteriously disappearing. Must be the Time Jackers. I've got a feeling Geiz is involved!"

Before she could reply, Sougo dashed back out, leaving a very puzzled Tsukuyomi behind.

"…What just happened?" Woz muttered.

"Oh dear, this won't do. As his retainer, I can't even recognize my master's thoughts. What dereliction of duty, Woz!" came a voice from the door.

"Who are you?! And how do you know my name?" Woz demanded, eyes narrowing at the newcomer.

"Me?" the stranger said, thinking for a moment. "Just a passing Kamen Rider~"

"Kamen Rider Decade? Tsukasa Kadoya?" Woz was stunned.

"No, no. I'm not Tsukasa. He doesn't look like me," the man laughed. "But impressive that you know what he looks like."

The stranger, who called himself Ryuga, seemed surprised. Recognizing Decade's belt was one thing, but knowing Tsukasa's face? That was next level.

"I wasn't lying," Ryuga added. "I'm a Kamen Rider who just happened to wander into this world. I'm not Decade, but I figured—since this is Sougo's world—I may as well stick around to witness the rise of the most powerful Heisei Rider."

"You're not here to stop His Majesty from conquering the timeline?" Woz asked, genuinely surprised.

"Why would I bother?" Ryuga rolled his eyes. "This isn't my world. Whether it's ruled or destroyed has nothing to do with me."

"Anyway, enough of this pointless banter," Ryuga interrupted as Woz tried to continue. "Just a friendly heads-up: Sougo just ran off to save Geiz. Three days earlier than he's supposed to~"

"What? That's reckless time manipulation! How is this different from what the Time Jackers do?!" Woz exclaimed, and immediately rushed out in a panic to "educate" his wayward king.

Back inside, Junichiro reappeared with tea and snacks. "Eh? Where'd everyone go? And who are you?"

"Oh, they had something urgent. I'm Sougo's friend!" Ryuga said, quickly grabbing all the tea and desserts intended for three.

"Hmm…" Junichiro said nothing, watching the man polish off everything with lightning speed.

"Thanks for the treat! See you next time~" Ryuga said cheerfully, strolling out of the shop. From a distance, he followed Sougo and the others, casually observing as Sougo clashed with the next Another Rider—Another Gaim.

Ryuga managed to extract the power of Kamen Rider Gaim from the encounter—but nothing more. There was no sign of that divine energy.

After all, Kamen Rider Gaim was no ordinary warrior. He had ascended to the realm of gods. Known as the "Fruit God" or the "Beginning Man," his power stood apart.

But divine power was rare—even across infinite timelines and parallel universes. It made sense that such a force wouldn't just fall into Ryuga's hands. If every timeline had its own god, divinity would be as common as vending machines in Tokyo.

And this led Ryuga to a troubling realization: no matter how strong a character was in the Rider multiverse—whether it be Gaim the god, or the Demon King himself—unless they were a singularity, they lacked temporal uniqueness.

A singularity was a special being unaffected by changes to history. Destroy their timeline, erase their past—they would still exist, memories intact.

But everyone else? Even gods like Gaim… even kings like Sougo… could disappear if their past selves were destroyed or their histories altered.

It was a terrifying thought. A single loophole could end them forever.

And the question lingered in Ryuga's mind—was anyone truly safe?