(A/n: Before this starts, Say hello to a new Kamen Rider Legend, enjoy this story. Also, Jun will be replaced by Tamaki Hirohito).

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=====Tokyo, Japan/ Year: April 12, 2003 (DaiKaiju-Verse Earth TRN-420)======

The city is under attack by an army of Kasshine, civilians are panicking and screaming while running away from them. Most people died in vain, children were brutally killed. 

No one is there to save them, on the streets..two people are running away together while a woman holding her son is trying to get away from Kasshine.

Boy (5 year old): worried Mommy.

Woman: calm It's alright, sweetie.

Man: Yoko, we need to find a way out.

Yoko: How, Koichi? There's too many of those things, we can't outrun them for long.

They hear more footsteps coming towards them, they're facing back at their son.

Koichi: We have to protect our son: Tamaki.

Yoko: There's no way to fight those monsters.

Koichi: No, all we need is to hide from them.

Yoko was about to say something, they saw several Kasshine corner them in the alleyway. Young Tamaki hugged his parents, Koichi got in front of his wife and son to protect them and glared at them.

Koichi: glare You fiends will never get your hands on my wife and our son.

Then they pointed their staff at him by blasting him away, he screamed in pain and got hit in the wall by knocking him out.

Yoko: gasped KOICHI!

She's facing back at them as they walk towards Yoko and Tamaki closely, then a miracle has come to save them by blasting them away from Yoko and Tamaki.

Announcer: ATTACK RIDE. BLAST!

Something blasted the Kasshine away, Koichi groan as he saw a masked hero protecting them and it was none other than........KAMEN RIDER PRIMORDIAL!!

Primordial: Hmph, harming innocent family, eh? Not on my watch.

He charges towards the Kasshine soldiers to battle, Primordial kicked the first Kasshine to another Kasshine. A Kasshine soldier swings its staff at him, but Primordial caught the staff and pushed the Kasshine back. 

Primordial: Huh? You bad guys always get on my nerves, let's see y'all can handle this.

He pulls out a card and insert it inside of his driver, and pulls the handle.

https://youtu.be/cGtywvNCZ08

Announcer: KAMEN RIDE! BUILD! HAGANE NO MOONSAULT! RABBITTANK! YAY!

He transforms into Kamen Rider Build, and got into Kamen Rider Build's pose.

Primordial (Build): Now, shall we begin the experiment.

The Kasshine charging towards Primordial (Build), he morphs his Ride Booker into gun mode and he inserts his card in PrimordialDriver.

Announcer: ATTACK RIDE! BLAST!

He blasted several of Kasshine away, and he inserted another card inside of his driver again by changing his Ride Booker into sword mode.

Announcer: ATTACK RIDE! SLASH!

He slashed 5 Kasshine soldiers, and he insert his finale card.

Primordial (Build): Now, the grand finale.

Announcer: FINAL ATTACK RIDE! B-B-BUILD!

Primordial (Build): Hang on a sec.

Finally, Primordial (Build) dives underground to send a white energy chart flying up to the surface with the dotted line securing the enemy before leaping back up and delivering a kick at the last Kasshine, then he kicked through the Kasshine as it exploded. He lands softly back to the ground, he morphs back to normal form and faces back at the family. As for young Tamaki, he was amazed that Kamen Rider Primordial fought against all of Kasshine army all by himself. Also, he noticed one Kasshine was about to attack him and he inserted his card to transform into the new 14th Heisei DaiKaiju-Verse Rider. 

Announcer: KAMEN RIDE! DDRAIG!

He kicked the Kasshine away from him, as he transforms while the magic symbol appears beside of him.

Announcer: HI! HI HI HI HI!!!!

Then he turns into Kamen Rider Ddraig, the new 14th Heisei DaiKaiju-Verse Leader.

Primordial (Ddraig): Sa, showtime!

He dashes towards the Kasshine to battle, Primordial (Ddraig) punched him backwards and it swung its staff to hit him. But, Primordial (Ddraig) dodged it and kicked him away as he pulls out his finale card.

Primordial (Ddraig): Meet your maker!

He inserts inside his driver.

Announcer: FINAL ATTACK RIDE! D-D-DDRAIG!

Then he faces back at young Tamaki and his parents, Tamaki was surprised that Kamen Rider Primordial defeated the Kasshine. Right now, Primordial summons the gap to head back to DaiKaiju-Verse Earth Prime.

Primordial (Ddraig): *smirking* Protect this world kid, you'll need it.

As he disappears back to DaiKaiju-Verse, young Tamaki amazed at his fighting skills that he's protecting humanity from evil. And then, his teenage voice narrated in the background.

Tamaki: *narrated* My name is Tamaki Hirohito, I was 5 years old when this city was under attack by these Kasshine. They were sent here by Hundred, but then..a Kamen Rider who appeared out of nowhere to save us. He fights for humanity-in-secret, I was inspired by his combat skills and transformation. He saved me and my parents from the Kasshine, he goes by Kamen Rider Primordial. I remember the episode of Kamen Rider Gotchard when Ho-Oh Kaguya Quartz first met Kamen Rider Decade in his childhood.

Then Tamaki's parents witness a Kamen Rider who saved their lives from the Kasshine army, young Tamaki looked up the sky that went back to normal.

Tamaki: *narrated* Now I have my own childhood savior, Kamen Rider Primordial is my childhood hero. Just like Decade, when Quartz becomes Kamen Rider Legend. I wish I was like him these days, one of these days...I will become a Kamen Rider sooner or later.

As the screen fades black.

Tamaki: I will protect my world from evil..and defend it.

=======Title Intro=========

https://youtu.be/D4o3IHS1TaI

PRESENTS

IN ASSOCIATION WITH TOEI COMPANY LTD, LAY-DUC AND CRUNCHYROLL

AND 

GAMEFREAK, NINTENDO AND CREATURE INC PRESENTS

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See ya in next chapter.