Gates and Woz had joined forces to suppress the rampaging Another Drive, while nearby, Sougo was being mercilessly overpowered by Eternal.
"Eternal is completely broken!"
Seeing that he was no match, another figure suddenly stepped in to assist, replacing Woz at Sougo's side.
"Using my power... you even copied that trick?"
Tsukasa Kadoya—Kamen Rider Decade—leaned against a wall, watching the small alternate dimension crafted by Swartz.
"Daiki Kaitou taught me," Swartz said casually.
"It's the thief!" Swartz narrowed his eyes. "But I've already stolen your powers, haven't I? Don't get any ideas!"
"Oh?" Tsukasa smirked. "You really think that's how it works?"
"Cut it out already! This isn't your show!"
"Unfortunately for you," Tsukasa said calmly, "as long as I still exist, my power isn't going anywhere."
With a wave of his hand, Tsukasa reabsorbed the dimensional pocket Swartz had created. The floating world hovered toward him and merged with the Dimension Wall.
(Cue Punishment Song BGM)
"NANI?!" Swartz was stunned.
"Bye-bye~" Tsukasa smiled, then activated the wall to engulf both himself and the battered Sougo.
Inside, they found themselves in a looping dimension—repeating the moment when Sougo's classmate, Owada, won the championship.
"What is this?" Sougo looked around, confused.
"It's a world that turns the impossible into reality," Tsukasa said, quickly analyzing the situation. "I'd call it... AnotherWorld."
"Another world?" Sougo echoed.
"Your classmate Owada had the potential to win. Swartz twisted that possibility into this reality."
"But why?"
"He's probably trying to resurrect fallen villain Riders," Tsukasa guessed. "Like that Kamen Rider Eternal who fought you earlier. In the real world, he lost to Double. But in this twisted world... he wins."
To free the people trapped here, the world itself would need to be destroyed. But Sougo was powerless here. Tsukasa, despite having the strength and experience, chose not to act.
"You're the one who should handle this, Sougo," he said.
After exiting the dimension, the two didn't return to their original battlefield. Because of that, they missed Minato Miharu rushing to get Tsukuyomi to safety, unaware that Swartz was still nearby.
Miharu, focused entirely on protecting Tsukuyomi, hadn't alerted Gates. Realizing Miharu wouldn't last long against Swartz, Gates rushed back—leaving Woz to handle Another Drive alone.
Not that Woz was worried. Even solo, he could easily defeat the weakened Another Drive.
But Another Drive had no intention of dying here. Knowing he couldn't beat Woz head-on, he waited patiently for the right moment—to strike Heure instead and make a clean escape.
Sure enough, Sougo returned right as Another Drive slipped past Woz. Seizing the opportunity, Another Drive drove his palm like a blade into Heure's side, piercing deep with a single, brutal kidney strike.
"HEURE!!"
Sougo rushed forward, catching the dying Heure in his arms. He had helped Sougo obtain watches and now... he was dying.
Sougo still had the time-reversal abilities of both Zi-O II and Grand Zi-O, but he didn't use them. He could only watch in helpless grief as Heure took his final breath.
Laughing maniacally, Another Drive boasted his triumph. With Heure dead, he could now take his place.
What an idiot.
Instead of fleeing, he stood there laughing—mocking a broken Sougo. It was a fatal mistake.
In a blind rage, Sougo once again transformed into Grand Zi-O. His anger ignited, he summoned the true Drive—the original—and together they unleashed a devastating Rider Kick that obliterated Another Drive.
Meanwhile, Gates finally arrived at Swartz's location.
Everyone was running across timelines today—desperate to save someone. It was chaos.
Minato Miharu, foolishly declaring "You think I'd fear an undead from the past?!" before fighting, was being pummeled by Eternal.
But Gates didn't spare him a glance. His concern was for Tsukuyomi alone. Seeing her in a tense standoff with Swartz, but unharmed, Gates sighed in relief.
"You're finally here, Gates," Swartz said with a twisted grin.
"NANI?!" A wave of dread shot through Gates.
"Now let me create your world."
Silver, wave-like energy surged from Swartz's hand, wrapping Gates in dimensional walls. He struggled fiercely, but it was no use—he was dragged into a new micro-dimension.
"GATES!!" Tsukuyomi screamed.
Smiling, Swartz reformed the small world into a glowing orb and fed it into the Dimension Wall, preparing to resurrect another villain Rider.
Ten seconds passed.
Thirty seconds.
A full minute.
Nothing happened.
"What?! Why is it not working?!"
"Looking for White Woz?" said a calm voice behind him.
Ryuga approached, smiling faintly.
Swartz's expression fell. Of all people, he wanted to avoid Ryuga. His power was on par with Ohma Zi-O's. Until he could absorb that power, he couldn't hope to beat him.
"If you wanted to resurrect White Woz," Ryuga said, "you're too late. I've erased him—completely—from this timeline."
Swartz's heart sank.
Since obtaining the Golden Fruit and unlocking divinity, Ryuga had studied time manipulation intensively. Among his discoveries: the ability to erase someone entirely from the timeline.
White Woz had been the first subject. After all—he dared to raise his hand against Ryuga's wife.
"Offend me, and I'll let you live. Offend my wife, and you're erased."
It was a dramatic technique, yes, but flawed. It only worked on normal people or those with weak resistance to time.
Still, for clean-up, it was perfect. Erased from the timeline meant no resurrection, no suspension, no trace.
"You were meant to be a test, a stepping stone for Sougo," Ryuga said to Swartz. "I won't interfere."
A portal opened behind Ryuga, taking him and Tsukuyomi away. Another portal appeared under Miharu, who had been thoroughly beaten, whisking him away too.
Later, at 9-5 Do shop
"Gates was trapped in an alternate world too?!"
Sougo's voice was hoarse—likely from screaming Heure's name earlier.
"It's my fault," Tsukuyomi said, eyes lowered. "I fell into Swartz's trap."
"No," Miharu interjected. "It was my cowardice—"
"No," Ryuga cut in. "You had too much courage. What you lacked... was power."
No one responded. They simply nodded in silence.
"Ryuga," Sougo said suddenly. "Do you have a way to save Gates?"
"Of course," Ryuga nodded.
"Really? How?!"
"You'll need the combined strength of Trinity Zi-O... and Eternal."