No Pov.

=======Metropolis (A.R. Injustice)<======

When Ethan, Ty and Decadus are walking around the destroyed Metropolis, they saw nobody but a ghost town or city.

Primordial: Hmm, this city is like a ghost town.

Divine: *nodded* Yeah, who knew Regimes finally defeated Insurgency.

Decadus: Indeed, Superman cannot be stopped as long as their rebellions out there are hidden around the world. We need to stop Another Decadus before he's gonna turn this world into his wars.

Primordial: And how are we gonna find one of the Regimes?

???: Stop right there, criminals.

They turned around as they looked up at the sky, and it was Black Adam of the Regimes and they saw group of regime soldiers pointing their guns at them.

B. Adam: *glare* You rebellions shall surrender, out dictator Superman won't be pleased.

Decadus: *scoffs* Tch, please. Like I bow to him, he should bow to us instead.

B. Adam: *glare* Are you mocking his words.

Primordial: Nope, you guys are about be in trouble by us.

B. Adam: *growled* Who are you three?!

(A/n: If Decadus and Ethan are together, here are their new catchphrases).

Decadus/ Primordial: *unison* We are just a Passing-Through Kamen Kaiju Rider who Travels Space, Time and Dimensions, remember that!

Divine: I'm just a Treasure Seeking Kamen Rider who seeks through Universes, remember that.

B. Adam: *confused* Kamen Rider and Kaiju Rider?

Decadus: *nodded* Yep, as for now...let's battle.

https://youtu.be/ZLNWC0z4dBA

They charged towards them as both Decadus & Primordial pulls out their card forms as they transformed into their forms.

Announcer: KAMEN/ KAIJU RIDE. DEN-O!/ 

Primordial transforms into Kamen Rider Den-O.

Primordial (Den-O):

Then Decadus transforms into Godzilla Z.

Decadus (Godzilla Z): I am the Kaiju Guardian of the Galaxies! GODZILLA Z!

Then Divine insert his card inside his driver as he summons them.

Announcer: KAIJU RIDE. GAMERA! KAMEN RIDE. KABUKI!

He summons Gamera and Kamen Rider Kabuki to battle as well.

They charged at them to battle, Gamera uses his Plasma Breath at them as the Regime Soldiers alive as they screamed in agony, Kamen Rider Kabuki uses his finisher as well as they all exploded as well. Then Divine insert his card inside his driver.

Announcer: FINAL ATTACK RIDE. D-D-DIVINE!

He blasted them all as they screamed in agony as they exploded, he dusted himself off.

Divine: *sighed* Regimes never learn.

With Decadus in Godzilla Z form, he uses Atomic-Z Breath as he beams them all. As for Primordial in his Den-O slashing them all as they exploded as well.  Black Adam got angry and he was about to attack them, suddenly a yellowish bright lightning and he turns around as he saw a Dragon and he chuckled. All three heroes saw the dragon's appearance.

Decadus/ Primordial/ Divine: Who's there?

Then a dragon kept on laughing as he walking closer towards Black Adam, then finally a new Kamen Rider with a number 2 on his chest appeared who smacked the dragon kaijin's head.

???: Kaiju, what did I tell you: No rampaging!

Then a Dragon Kaijin has a number 3 on his chest and tail as well who groaned in pain.

Kaiju: Oh come on, Dai! You knew I was just kidding, right.

Dai: Mou! You always joking around Kaiju.

Then he was chasing him as he grabbed his tail, and Kaiju growled. 

Kaiju: Grr, you always grabbed my tail.

Dai: *glare* Because you are always a pain in the ass. 

Then Decadus, Primordial and Divine saw the numbers on their chest, Primordial faced back at his future son and Decadus. 

Primordial (Den-O): Huh? Who are those guys?

Divine: And what's with the number 23 on their chest.

Primordial (Den-O): *facing Decadus* Decadus, did you bring them here?

Decadus: No, but........They remind me of Revice. But what is with number 23?

Divine: Probably 2 months till somebody's birthday.

Primordial turns back to normal form.

Primordial: Who's two month birthday?

======>Omniverse Kingdom<=======

Then Jayden looked at the calendar of October as he looked at December 1st, and he chuckles.

Jayden: *chuckles* Two months left before KaijuMaster20's birthday comes, but now he has created a newborn Rider & Kaiju together!

Then a number 23 on December 1st, and it shines the name of KAMEN RIDER DAIKAIJU!

=======>Back to A.R. Injustice<=======

B. Adam: *glare* I won't let you defeat me!

Then he summons his lightning bolt as he threw it at them, but they dodged his lightning.

(A/n: I'm too lazy to type it all, pretend Black Adam is Asmodeus while Dai & Kaiju are Revi & Vice).

https://youtu.be/ZueJYU24tos

Kaiju: *amaze* Whoo! Yeah! Did you guys see that, we defeated that evil-doer for you. As we are the both dynamic duos of the year. 

Then Kamen Rider Dai grabbed his shoulder.

Dai: Come on, Kaiju. Let's go.

Kaiju: B-B-But, we don't want to miss the good part.

When they were about to leave, Primordial shouted at them.

Primordial: Hey! Who are you two?

They facing back at him and they nodded together as they did Revice Pose.

Dai: My name is Ray Marshall, call me Kamen Rider Dai.

Kaiju: *smiles* And I'm Kaiju the Dragon Kaijin.

Dai: Together we are.............

Dai & Kaiju: KAMEN RIDER DAIKAIJU! THE 23RD BIRTHDAY HERO OF DAIKAIJU-VERSE AND 6TH REIWA HERO!

Primordial/ Decadus/ Divine: *confused* Kamen Rider DaiKaiju?

Dai: *nodded* Right, we'll be waiting till December 1st. Till Solaraigo finishes his adventures, let's go Kaiju.

Kaiju: *nodded* Hai!

They walked through the portal as Kaiju waving goodbye as he went back towards it and it disappeared, as for the others who were confused and shocked at their appearance.

Primordial: Well....looks like we have another Reiwa after Solraigo.

As the screen fades black, the intro has started music. 

========>Intro<===========

https://youtu.be/XN6d3Gti5_g

WARNER BROS. PRESENTS, A LEGENDARY PRODUCTION PRESENTS. IN ASSOCIATION WITH TOHO & TOEI COMPANY LTD.

DC UNIVERSE AND KAIJUMASTER20 STUDIOS PRESENTS.

=======================================.

See ya in next chapter.