"Eternal's power can permanently destroy the alternate world. First, send Woz there to prepare. Then, using the power of the Trinity Zi-O, summon yourself and Eternal back to Gates. With Eternal's help, you can save him."
Ryuga carefully explained the plan to everyone.
"But the entire operation hinges on whether you can withstand Eternal's Maximum Drive."
"No problem! Leave that to me!" Sougo responded without hesitation.
Ryuga nodded. "Then, summon Tsukasa and Daiki."
"Tsukasa will send Woz into the alternate world. Daiki can use the Future Notebook to bring out Eternal."
"Got it!" Sougo immediately reached for his phone, then paused. "Wait... I don't have Tsukasa's contact."
"Uh... I do," Tsukuyomi raised her hand timidly.
"…"
Ryuga chuckled. "Lucky, Gates isn't here."
Tsukuyomi stared in confusion, a black question mark practically floating above her head.
Sougo gave a mysterious smile.
Oblivious to the undertone, Tsukuyomi quickly contacted Tsukasa. He and Daiki didn't bother with travel time; the next moment, they crossed through the dimensional wall and arrived at 9-5 Do shop.
After hearing the plan, Tsukasa gave Ryuga a deadpan look.
"Couldn't you have sent Woz yourself?"
"I could," Ryuga replied calmly.
"Then why call me?!"
"Isn't meddling your specialty? You hijacked Zi-O and turned it into Decade Season 2. This suits you perfectly."
"I— you— I— ￥m%m%p￥…!" Tsukasa choked on a curse, unable to argue.
Seeing Tsukasa speechless, Daiki laughed heartily and agreed to the plan. After all, his job was simple—just write a line in the notebook.
"Tokigawa Sougo and Kamen Rider Eternal engage in battle."
And just like that, Sougo, who had just stepped out of the house, ran straight into Eternal.
"It's the Grim Reaper's party time. Go on, jump to your death!" Eternal grinned, giving his signature thumbs-down as the fight began.
"Transform!"
[RiderTime!]
[Kamen Rider Zi-O!]
Sougo transformed into his base form and rushed in.
Ryuga frowned in confusion. Didn't he just agree to take Eternal's full attack? Why not activate any heavy armor? Starting in base form—what's he thinking? Masochist, maybe?
Meanwhile, sensing Eternal's energy signature, Swartz quickly appeared—bringing along his own summoned villain, Kamen Rider Yuki from Den-O.
"I won't let you interfere with the King of Time!" cried Minato Miharu, leaping forward to intercept Yuki.
Pulling out a pair of... floral boxers (wait, no, that's just courage), Miharu strapped on a transformation belt resembling Kamen Rider 1's Typhoon. It was almost identical—except this version was powered by water instead of wind.
"Transform!"
Suddenly, the entire atmosphere shifted—classic Showa Rider energy.
The belt's central fan spun, sucking in the surrounding moisture and completing the transformation.
Back at the main battle, Sougo glared at Swartz. "Give me back Gates and Owada!"
Swartz sneered. "Give up. You'll never see them again."
"Forever? What a fun word!" Eternal grinned. He kicked Sougo aside, then pulled out the Eternal Memory and slotted it into his Eternal Dagger.
[Eternal! MaximumDrive!]
A surge of blue flame erupted, scorching everything in its path.
"Aaaahhh!!" Sougo screamed in agony.
That blast should've knocked him out cold. But for the sake of rescuing Gates, he gritted his teeth and endured it.
Still—why no Gold Zi-O armor?
Just as Sougo was barely holding himself together, Tsukasa had already sent Woz into the alternate world.
There, the timeline fragment endlessly looped Gates's "confession" to Sougo…
"You became the Demon King and ruined the future!"
"I fled here, but I know I must return someday…"
"But now… I want to stay in this era and create a new future—with you!"
Gates passionately gripped the faceless figure wearing Sougo's uniform. The world reset. Then it played again.
Tell me—what is the essence of humanity?
Woz watched the infinite confession loop play out with amusement. "So this is the possibility Gates wants to realize…"
An endless confession loop. Not bad.
Meanwhile, Sougo—still getting roasted—finally realized he should be using some armor.
He pulled out the W Ridewatch.
"Didn't you once lose to Kamen Rider W?"
W: Why am I being dragged into this? I didn't sign up for Golden Storm Ace shenanigans.
[W!]
[ArmorTime!]
[Cyclone! Joker!]
Two U-shaped Gaia Memories materialized and fused into W-style armor on Sougo's shoulders.
"All right, tell me your sins!"
Eternal scoffed at Sougo's knock-off catchphrase. Instead of replying, he tossed his cape.
Again?! You lost last time because you threw that thing!
"I didn't lose! A gust of wind blew by, that's all!"
No, you lost because you ditched your cape, genius.
[Zone (Space)!]
Eternal sneered, slotting the Zone Memory into his driver and slapping it.
[Zone! MaximumDrive!]
"HYAAAH!!"
Twenty-four Gaia Memories materialized around him, locking into his armor slots one by one.
[Accel! Bird! Cyclone! Dummy! Fang! Gene! Heat!
Iceage! Joker! Key! Luna! Metal! Nasca! Ocean!
Puppeteer! Queen! Rocket! Skull! Trigger! Unicorn!
Violence! Weather! Xtreme! Yesterday!]
[MaximumDrive!]
"Burn in hell!"
[Eternal! MaximumDrive!]
With the final Memory inserted into the Eternal Dagger, all twenty-six powers converged on Eternal's right leg.
He leapt—delivering his ultimate finishing kick.
Sougo, faced with inevitable defeat, suddenly felt a surge—not from his willpower alone, but his inner magic activating on instinct. He braced, took the hit, and in that moment, pulled out the Trinity Ridewatch.
[Zi-O! Geiz! Woz!]
In the alternate world, both Gates (still confessing) and Woz (still watching) transformed into watches. But instead of flying to Sougo, they began emitting a reverse-summoning signal.
It pierced the dimensional wall—locking onto Sougo and Eternal mid-impact—and forcefully pulled them into the alternate world.
"NANI?!" Eternal twisted in midair, baffled by the sudden change of scenery.
[TrinityTime!]
[Tri-ni-ty~]
[Trinity!]
Before he could react, Sougo had already completed his transformation into Trinity Zi-O. Finally able to breathe, he stepped forward to end this once and for all.