No Pov.

======>Union City Street<======

When Spider-Boy is ready to face against Ethan in his Kamen Rider Form.

(A/n: I redesign his suit).

Primordial: Look, Spider-Boy. I know you want to fight me, but you know how powerful I am.

Spider-Boy: *glare* You think you can destroy any universe around the galaxy, now I can fight you instead.

???: Fighting him is not worth it, if I were you.

They heard a male voice as the Dimensional Gap appeared out of nowhere, Ethan's eyes widened alongside Yang, Winter, Ty and Fuyumi as they're shocked and it was Decadus.

Decadus: He is far more stronger than every Riders, he is the King to us after all.

Spider-Boy: *serious* And who are you suppose to be?

Decadus: I am-

Primordial: *shocked* He's the 10th Senior Heisei DaiKaiju Hero in Neo Chicago City, Decadus!

Yang/ Fuyumi/ Ty/ Winter: *shocked* The Former Destroyer of Worlds/ A Raptorian Decade/ Deinonychus Decadian/ Well-Known Hero!!!!

Decadus: *chuckles* Yep, let me reintroduce myself *Decade Pose* To Connect Everything, to destroy everything, Decadus the Raptorian Decade.

Spider-Boy: Wait, you mean you're the Heisei Kaiju?

Decadus: *nodded* Yes, I am the Legendary 10th Heisei Daikaiju. But, I need to warn you two.

Primordial/ Spider-Boy: *confused* About what?

???: That you two are gonna kill each other for both Shocker and Goblin.

They turned around as they saw Nick Hamada aka Venom.

Venom: We came to warn you that Goblin wants to kill you and Primordial's enemy as well.

Decadus: He's right, they want you two kill each other.

Primordial: No wonder why.

Spider-Boy: So you're saying that I was set up!

Then his reveals as Nick Hamada.

Nick: *nodded* Yes.

Spider-Boy: Grr, that double crossing Dark Rider. Now that Goblin freak is here. What else he's sending?

As they heard footsteps running towards them, they saw the Sinister Six and 15 Battle Raiders charging towards the heroes.

Dr. Ock: *glare* There's that Spider and that Symbiote!

B. Raider: And the Destroyer of Universe, let's get them!

B. Raider 2: Wait.......*eyes widened at Decadus* HOLY SHIT! IT'S ONE OF THE HEISEI DAIKAIJU!

Sinister Six/ Battle Raiders: *eyes widened* AH SHIT! IT'S DECADUS THE DESTROYER OF WORLDS!

https://youtu.be/3exztAq90TQ

Decadus: *smirking* Yep, now us heroes will join forces and fight those guys instead.

Both heroes facing back at each as they nodded and turned against the villains, then Ty joins the fight as well and he pulls out his card and his Driver and he insert his card inside as it activated.

Ty: *smirking* Let's do this. Henshin!

Announcer: KAMEN RIDE. DIVINE!

Then two illusions zooming around him as he transforms into Kamen Rider Divine.

Divine: Let's hunt for Treasure, and fight for freedom *chuckles* That's my new catchphrase for now.

Then Yang and the girls walked towards Ethan with their worried look.

Yang: *worried* Are you sure about this.

Primordial: *nodded* Yes, but don't worry..I'll handle these guys for all of us.

Fuyumi: *worried* Come back alive.

Winter: *worried* Promise us you will live.

Primordial: I will.

Yang, Fuyumi and Winter smiled as they kissed his helmet as they ran back to the building, he faces back at the heroes.

Primordial: Let's show those evil-doers how the real heroes made of.

Decadus: *smiles* Okay rookies, let's destroy them all.

They charging towards them as they engage their battle, Divine insert his two cards inside his driver to summon them.

Announcer: KAMEN RIDE. VIO-HOPPER! KAIJU RIDE. APESH!

He summons Kamen Rider Vio-Hopper and Apesh the Turtle Kaiju to battle against Battle Raiders.

Then Decadus confused with Kurma's name as he punched the Battle Raider, and he faces at Divine.

Decadus: I thought his name is Kurma?

Divine: He changed his name ever since he discovered that he lives in Egypt, his real name was Apesh the Egyptian Turtle God Kaiju. He's like Gamera-like type.

Decadus: *nodded* Ah, okay.

Then he brought out his Kaiju Booker as he slashed another Raider from behind, Divine started blasting them as well. Venom slammed Sandman as he threw him to the walls, but Sandman turned into sand by punched Venom to the glass window. Then Divine pulls out another Kaman Card as he inserted it inside his driver once again.

Announcer: KAMEN RIDE. KRYSTAL SORCERER!

He pulls the trigger as he summons Krystal Sorcerer to battle to help Venom.

He pulls out his finishing card as he insert inside his driver to help Venom from Sandman.

Announcer: FINAL ATTACK RIDE. KRYSTAL S-S-SORCERER!

He uses his ice magic on him as he froze Sandman, Venom turns his arm into sword blade and slashed him apart as his body parts exploded. Krystal Sorcerer turns back into a card, as both Venom and Divine are now fighting against Battle Raiders. 

Decadus slashing Electro as he kicks him backwards, Electro grunted as he growls at him while Decadus dusted his hands off.

Electro: *growls* You monsters will die for this!

Decadus: *pulls out his finisher card* Are you sure about, as of now....the finisher!

He inserted his card in his WristDriver.

Announcer: FINAL KAIJU ATTACK RIDE. D-D-DECADUS!

He leaped into the air as he kicked Sandman backwards as he crashed into the garbage dumpster as he exploded while he screamed in agony. He caught Kraven's fist as he punched him back as he insert his card in his WristDriver. 

Announcer: KAIJU ATTACK RIDE. SLASH!

He slashing 6 times at Kraven as he screamed in agony and finally exploded, he did Decade pose when he put his fingers on his blade.

Decadus: *smiles* I get a gist of it.

With Spider-Boy facing Doctor Octopus, he uses his webs to stick him to the wall as Divine inserted his card inside.

Announcer: ATTACK RIDE. BLAST!

He shot him multiple times as he screamed in agony and exploded, both Vio-Hopper and Apesh fighting the Vulture. Divine insert his card inside his Driver to use their finisher on The Vulture.

Announcer: FINAL ATTACK RIDE. V-V-VIO-HOPPER! FINAL KAIJU ATTACK RIDE. A-A-APESH!

Vio-Hopper leaped towards him by summoning his Ninja Sword by slashing him multiple times, Apesh energized his flames as he breathed Pyro Ball at him as he screamed in agony. Then he fell to the ground as he exploded, both Vio-Hopper and Apesh turns back into cards and went back to Divine.

Divine: *smiles* Alright!

Both Primordial and Spider-Boy fighting against Mysterio, Primordial blasting him with his Booker to help out Spider-Boy. Primordial charges towards Mysterio as he kicked him to the window, Spider-Boy sprout his web as he spins him around as he threw him up in the air and then Primordial pulls his empty Ride Card as it reveals as Spider-Boy's new form. He inserted his card inside his driver.

Announcer: KAMEN FORM RIDE. SPIDER-BOY!

He walks towards Spider-Boy as he touched his back, then Miyamoto confused what Ethan's doing.

Spider-Boy: Huh? What are you doing?

Primordial: Hold still, this might tickle.

He pressed his back as Spider-Boy's back started to glow as he gasped, then a bright red and blue started to glow as Miyamoto turned into his newer version of his suit.

???: *shocked* HUH?! Whoa! What am I?

Primordial: Your new suit, Spider-Boy or should I say...........Arachnid Rider.

A. Rider: *shocked* I-I-I'm half Spider-Man, half Kamen Rider?!

Primordial: *nodded* Hai.

A. Rider: Then.....*smirking* Let's finish this battle.

Then Mysterio got back up as he shocked & saw Spider-Boy that he transformed into his new form, then he growled at them as he energize his powers.

Mysterio: *glare* It doesn't matter that you have a new form, Spider-Boy. I will show the world who is their greatest threat, just like I did to Peter Parker.

A. Rider: *cocky smirk* Hate to tell you, Discoball. I'm not Spider-Boy any more, I am ARACHNID RIDER! This suit will reflect your powers and illusions. 

Primordial: So me and my Spider Buddy will finish you once and for all.

He pulls out his finishing card that has both his and Miyamoto's image in it, and he inserted inside his driver.

Announcer: FINAL ATTACK RIDE. P-P-PRIMORDIAL! A-A-ARACHNID RIDER!

They both leaped into the air as he threw their kick together as they kicked Mysterio to the walls as he screamed in agony and finally exploded. At the top of the roof as both Green Goblin and Kamen Rider Shocker growled in anger as their minions had been defeated, they jumped down in front of them as they glared at them.

G. Goblin: *glare* Grr, you heroes will fall before our hands.

Shocker: *glare* You will never win in this round.

Decadus: *smirking* Oh yeah, says the guy who sets up Spider-Boy here.

Shocker: *stern* Who the hell are you?

Decadus: *smirking* I'm just Passing-Through Kaiju Rider, remember that. Also, Ethan...I have present for you ever since Omni-Arena when us Showa and Heisei DaiKaiju and Megaforce fought Virgolial and Dormammu. I found this in Virgolial's lab, he was about to use but I stole it from him..here.

He brought out a K-Touch device as he threw to Ethan, and his eyes widened that his K-Touch has all of Era Daikaiju Heroes.

Primordial: *eyes widened* You mean it?

Decadus: *nodded* Test it out.

He nodded as he pressed all of Era Heroes.

Announcer: SHOWA RIDER. ICHIGO! NIGO! V3! RIDERMAN! X! AMAZON! STRONGER! SKYRIDER! SUPER-1! ZX! GAIA! BLACK! RX! SHIN! ZO! J!

Then he pressed Showa DaiKaiju Era.

Announcer: SHOWA DAIKAIJU. GODZILLA! AGITO! CROSS-Z! OOO! SANGOU! ULTRAMAN Z! KAIJU NO 8! YIN/YANG DRAGON EMPEROR! SEIGA! ANCIENT SHINOBI! OSCURO! SLEEPER! HUNTER! EARTH GARON!

He began to pressed all of Heisei Riders.

Announcer: HEISEI RIDER. KUUGA! AGITO! RYUKI! FAIZ! BLADE! HIBIKI! KABUTO! DEN-O! KIVA! DECADE! W! OOO! FOURZE! WIZARD! GAIM! DRIVE! GHOST! EX-AID! BUILD! ZI-O!

He pressed the next Era buttons of Heisei DaiKaiju Heroes.

Announcer: HEISEI DAIKAIJU. VIRGO! VIGO! KIRGO! TITANUS VIRGO! VIRGO JR! VERTIGO! VIRGON! VI-O! DEMONIK! DECADUS! W-BREAKOR! AEON! GOLZAN! VIRON! DRACONIAM! CYBER-RAPTOR! DARKRAIJIN! DRACO BEAST! TYON! TIMERDON!

He pressed the Reiwa Riders now.

Announcer: REIWA RIDERS. ZERO-ONE! SABER! REVICE! GEATS! GOTCHARD!

And finally he pressed all of Reiwa DaiKaiju Heroes.

Announcer: REIWA DAIKAIJU. VIRGUL! VERO-ONE! HAOS VIRGO! SOLARAIGO!

He then switches his driver to his right hip side as he places his K-Touch on his belt.

Announcer: FINAL KAMEN RIDE. PRIMORDIAL!

Then he transforms into his final form, all of Showa, Heisei and Reiwa Heroes collide together as the cards spins on the chest area and he sprouts his cape out and revealed himself in his Complete form.

Yang, Fuyumi, Winter, Miyamoto, Nick, Venom and Akira shocked at his final form except for both Decadus & Ty who smiled brightly at him. Then he did Decade pose once again.

Primordial (Complete Form): I AM THE EMPEROR OF ALL RIDERS & DAIKAIJUS! I WILL BALANCE ANY UNIVERSES! KAMEN RIDER PRIMORDIAL, COMPLETE!

Then Decadus pulls out his K-Touch as well and he presses all of DaiKaiju Heisei Heroes.

Announcer: VIRGO! VIGO! KIRGO! TITANUS VIRGO! VIRGO JR! VERTIGO! VIRGON! VI-O! DEMONIK! DECADUS! W-BREAKOR! AEON! GOLZAN! VIRON! DRACONIAM! CYBER-RAPTOR! DARKRAIJIN! DRACO BEAST! TYON! TIMERDON!

He switches his WristDriver on his right wrist and places it on his left wrist.

Announcer: FINAL KAIJU RIDE. DECADUS!

He transforms into his Complete Form as well.

(A/n: Pretend he's wearing the armor, I didn't get to draw his complete form).

Decadus (Complete Form): *smiles* So, shall we defeat these evil-doers.

A. Rider: *smirking* Hell yeah.

Then both Decadus and Primordial pull out their finishing cards as they insert it inside of their drivers, then Miyamoto presses his driver as well.

Announcer: *unison* FINAL KAMEN/ KAIJU RIDE. P-P-PRIMORDIAL/ D-D-DECADUS!

Announcer: REALIZING IMPACT!

They leaped into the air together and both Goblin & Shocker eyes widened as they kicked them together, they screamed in agony as their bodies began to electrocuting.

G. Goblin: *yells* NOOO! THIS CAN'T BE HAPPENING TO ME! 

Shocker: *yells* I WILL HAVE MY REVENGE ON YOUR, PRIMORDIAL AND DECADUS! YOU TWO SHALL BE DESTROYED!!!!!!!!!!!!!

They fell backwards as they exploded, and they finally defeated two evil leaders. The others cheered for them as they defeat both Green Goblin and Kamen Rider Shocker, Primordial faces back at Decadus as he thank him.

Primordial (Complete): *nodded* Thank you, Decadus.

Decadus (Complete): *smiles* No prob, Rookie.

====>Timeskip<======

https://youtu.be/nbXzP2VjZFE

As the sunset is going down, both Miyamoto and Nick are ready to leave.

Miyamoto: *smiles* Thank you for convincing me that Shocker guy set me up.

Decadus: *nodded* No prob, every villain always goes for lies. Just be careful what they're saying, you might as well keep an eye on him Nick.

Nick: *smiles* I'll do my best.

Then Decadus summons the Dimensional Gap and both heroes walk through the gap, and finally disappear. Ethan smiled alongside with everyone in Neo Rider HQ.

Ethan: *smiles* Thanks.

Decadus: *smiles* It's what all Senior DaiKaiju Heroes for, kid. Convince them before they'll kill each other.

They heard a vehicle as they saw Touya was driving alongside Raven and Vernal with him, Yang shocked at her mom came.

Yang: *shocked* Mom!

Raven notice her daughter is there with the heroes.

Raven: Ugh great, my daughter is here.

Then Decadus walked towards them as he put his hands on both Raven and Yang's shoulders.

Decadus: Before you two start arguing with each other, let's talk about personal things like family. Do you two want to hate each other?

Raven & Yang stared at him as they face back each other, but they looked each other ashamed.

Decadus: Okay, just talk to each other for a moment and work things out.

They nodded as they starting to have their conversation, Decadus walked towards Ethan.

Decadus: You know, rookie. You're the first Reiwa Hero who first appeared back then when Virgo and his team first fought against Godzilla and his Defenders. 

Ethan: *nodded* Yeah, who knew ya'll guys can be that legendary.

Decadus: Yes, ever Jiro and all DaiKaiju Warriors lives back in Union-Verse where Kenji lives and they recreate Union City into Neo Chicago City.

Ethan: Hmm, there's something I can't get my mind off.

Decadus: And that is?

Ethan: When is your journey ends?

Decadus: As long as I am still surviving, I've never given up on my journey. I just wanna be like Tsukasa, If I found a female kaiju....*smiles* I might end my journey for my family.

Ethan: Yeah, that's what I'm going to do the same thing.

Decadus: *smiles brightly*...I guess you and I will have a great journey together, to travel all universes to those who need our help. Like Akira Belmont, Max, Lincoln Loud, and others who need our help. 

Then Ty walked towards them as well.

Ty: *smiles* And don't forget me, dad and Decadus. All three of us will have a great journey, no matter what. Heisei & Reiwa Heroes never given up our hopes. 

Then Yang and Raven walked towards Ethan as Yang tapped his shoulder, and he's facing back at her.

Yang: *smiles* Ethan, this is mother: Raven Branwen. Mom, this is my boyfriend: Ethan Fredrick.

Raven: So you're the boy who's dating my daughter, right? 

Ethan: *nodded* Yes ma'am.

Raven: Hmm......in that case.

She grabbed his both cheeks as his eyes widened and pulled him to her lips, and everybody screamed except for Yang & Ty while Ethan's eyes widened in shock.

Fuyumi/ Winter/ Decadus/ Touya: *screamed* AAAAAAAAAHHHHHHHHH!!!!!!!!!!!!!!!!!!!

Then she pulls away from Ethan as he shocked and she giggles.

Raven: *smiles* I don't mind sharing, as your Milf girlfriend.

Ethan: *shocked*...........Uh.......Uh........

Decadus: O-O.....Okay things just got awkward!

???: Or things are about to get destroyed.

Then everyone turns around as they saw Another Decadus, Decadus glares at his Timejacker counterpart.

Decadus: *snarls* Another Me or should I say Kaito Hoshino!

A. Decadus: *evil chuckles* Well, ain't the original Decadus. Glad to be here, I was about to kill Raven and Vernal if it wasn't for the Kamen Riders. Now it's time to end this once and for all, right now.......*devious smirk* Your world will be mine. Hahaha!!!!

Then he disappears as they know they're gonna fight their final threat of the world, Decadus faces back at them.

Decadus: Hey, rookies. You two are ready to travel to another world.

https://youtu.be/ZLNWC0z4dBA

Then both Ethan and Ty nodded as they pulled their cards, and they transformed together.

Ethan/ Ty: HENSHIN!

They both insert their cards together as they transformed together.

Announcer: KAMEN RIDE. PRIMORDIAL/ DIVINE!

They transformed into Kamen Rider Primordial and Divine, as all of Neo Riders alongside RWB, JNPR, CVFY and NDGO are watching all three of them leaving to fight against Another Decadus. Ethan faces back at them as he smiles.

Primordial: *smiles* I'll be back guys, I'm promise I'll make it out alive.

Yang: *smiles* You better, we won't live without you.

Touma: *smiles* Go defeat that impostor, Ethan.

Vamp: *smiles* Yeah, fight for us!

Ruby: *smiles be careful out there.

Jaune: Go get'em, Ethan.

Nora: *excited* BREAK HIS LEGS!

Ren: *polite smile* Have a safe trip.

As all Neo Riders and Huntsmen are waving at them as Decadus, Primordial and Divine are ready to fight against Another Decadus. Decadus summons the Dimensional Gap as they nodded together.

Decadus: *smiles* Let's go, Rookie Riders.

Primordial/ Divine: *smirking* Yeah!

And they finally jumped through the Dimensional Gap and it wrapped them through the gap to travel another universe to fight Another Decadus once and for all.

As the screen fades black, the words shown on the screen.

KAMEN RIDER PRIMORDIAL, DIVINE AND DECADUS WILL RETURN IN FINAL SEASON!

======>Credits<======

https://youtu.be/RD2YIEIjBzA

ETHAN FREDRICK (KAMEN RIDER PRIMORDIAL)

YANG XIAO LONG

TY XIAO LONG-FREDRICK (KAMEN RIDER DIVINE)

RUBY ROSE

BLAKE BELLADONNA

WEISS SCHNEE

WINTER SCHNEE

FUYUMI TODOROKI

RAVEN BRANWEN

VERNAL

TOUMA & VAMP

COLE (KAMEN RIDER RYUJA)

RYUGA (KAMEN RIDER DYNOMARU)

TOUYA (KAMEN RIDER DELTA J)

AKIRA (KAMEN RIDER PHANTOM)

RIKU SERIZAWA (KAMEN RIDER VIRGO CENTURY)

LINA SPRING (KAMEN RIDER MAIDEN)

JAUNE ARC

NORA VALKYRIE

PYRRHA NIKOS

LIE REN

TEAM CVFY

TEAM NDGO

DECADUS THE RAPTORIAN DECADE

=======>MARVEL HEROES (PatrickEstvo's Ocs)<=======

MIYAMOTO YAGI-MIDORIYA (SPIDER-BOY/ ARACHNID RIDER)

NICK HAMADA (VENOM)

=======Antagonists<======

KAMEN RIDER SHOCKER

GREEN GOBLIN

GOBLIN KING

WAKE GOBLINS

SINISTER SIX

BATTLE RAIDERS

JACQUES SCHNEE

DARK RIDERS

KAITO HOSHINO AKA ANOTHER DECADUS

========>DAIKAIJU REIWA CAMEO<======

CODY BATTLE (KAMEN RIDER KENZAN)

SOLARAIGO (DRAIGO & SOLARFLY)

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

See ya in Post Credit Chapter, Final Season is coming soon.