DISCLAIMER: The following is a fan-fiction based story.Engine Sentai Go-Onger, the Super Sentai series, Kamen Rider Build, and the Kamen Rider series in general are properties of TOEI, TV-Asahi, and Ishinomori Productions. Soul Calibur is property of Project Soul and Bandai Namco.

Please support the official release of the upcoming Super Sentai V-Cinema, Engine Sentai Go-Onger: 10 YEARS GRAND PRIX.


Lap 021: Rampaging Cross-Z [暴れるクローズ/Abareru Kurōzu]


WARNING: This chapter contains scenes of graphic violence and obscene language. Viewer discretion is advised!


(*Opening: "Be The One" by Pandora feat. Beverly from Kamen Rider Build*)

"It has been four months after the destruction of the Skywall and Pandora's Box. A new era of peace has been begun. But, when monsters from different dimensions start attacking, a new chapter of Kamen Rider Build's battles are about to unfold..."

[~Kono mama aruki-tsuzuketeru~] (Tonight again, I keep on walking)
[~Konya mo massugu hitori no ashiato tadotte~] (Down this same path when I come across a set of footprints)
[~Hateshinai dakedo kimi dake wa~] (Which never end. But you're the only one...)
[~Dokoka de matteru egao tayasazu ni~] (Waiting for me somewhere without ever losing your smile.)
[~There you will...~]

[~Be the One! (DA!) Be the One! All right!~]
[~
Ashita no chikyuu wo nagedasenai kara~] (I won't give up on the Earth's future.)
[~Be the Lights! (DA!) Be the Lights! All right!~]
[~
Tsuyoku nareru yo ai wa makenai~] (I will become strong! Love doesn't lose!)
[~Nanika wo tasuke sukutte dakishime~] (Help something, save something, hold something)
[~Kokoro ni furete todoku yo tsutaware~] (Touch my heart and get through, shout it out)
[~Be the One! Be the Lights!~]
[~
Messeeji okuru yo hibiku yo~] (Send the message, it resounds!)


[Interlude]

(*BGM: Cross-Z Magma Knuckle Vortex Crank loop*)

Sento: It's been four months after the destruction of Pandora's Box, the Skywall, and the defeats of Kozuki Kaguya and extraterrestrial lifeform, Evolto. The Go-Ongers escaped into the other Human World where Kamen Rider Build, aka Kiryu Sento resides. When the mysterious underground organization, Foundation X made their presence known in their home dimension, Sento, along with the Go-Ongers and the SOLGU resumed their skirmish against the Foundation. While assessing Banjou's Hazard Level escalation, the others encounter another Foundation X attack in two different locations.

Banjou: Seriously, how long am I going to be put into this training. It's like that guy's [Goro] moves are ripped straight from a video game!

Sento: So what if he has moves that he saw from a video game? Seriously, musclebrain. You need to work out more.

Banjou: Come on man, stop screwin' around!

Sento: Let's just move on with episode 21 of Engine Sentai Go-Onger: 10 YEARS PRELUDE feat. Kamen Rider Build!

[Interlude Ends]


As Goro and Banjou continued their sparring, the more Goro dished out beatdowns on the musclehead, Banjou punches even harder. Hiroto and Miu then managed to enter the fray to test Banjou's skills for themselves.

When Hiroto is in the receiving end of Banjou's right hook, that's when he had the same sentiment as Goro about Banjou's escalating Hazard Level. Miu herself is not even safe from Banjou's unbridled strength.

"So he is this strong. As expected for someone born with an extraterrestrial DNA...", Hiroto notes the raw, brute strength unleashed by Banjou.

"It's going to take more than three to take him down. Ani?", Miu asks if it's ready to transformation.

Goro seems to take note of the permission from Miu to be cleared for transformation. "I read your mind, Miu-san. I guess it's time for Stage 2.", he said and then equipped his Build Driver. "Banjou, suit up. The next one is going to be even more intense."

"Just what I wanted!", Banjou answered, as he now readied his own Build Driver and took out the Magma Knuckle with the Dragon Magma Full Bottle inserted.

Goro takes out the G7 Jet Visor, now set in Live Mode and loaded the Jet Phoenix bottle. Both Goro and Banjou set their adapters into their Build Drivers.

*Bottle Burn! Cross-Z Magma!* / *Fumetsu no Yuugou! Jet Visor, Buildrize!*

Followed by the Sutou siblings inserting their Change Souls into their Wing Triggers, "Change Soul, Set!", they proclaimed, assumed their pre-transformation pose.

While turning his Build Driver's crank, Banjou proclaims his words whenever he is in Cross-Z Magma form, "My power is filled to the brim. My soul is on fire!"

*[Build Driver's voice] Are you Ready?*

Goro followed his, saying, "I have no limits!", something he usually says before transforming into Jet Phoenix Armor.

And Banjou finishes, "My magma is overflowing!" Both Banjou and Goro shout, "Henshin!" as they transform into their respective Rider forms.

*[Cross-Z Magma Knuckle's voice] Gokunetsu Kinniku! Cross-Z Magma! Aachachachachachachachaa! Aachaa!* / *[G7 Jet Visor's voice] Fumetsu no Tsubasa Moyasu! (Requiem Aeternam~) G7 Jet Phoenix! Moeru! (Dona eis Domine~)*

The two ESP siblings transformed into their Ranger forms, both Hiroto and Miu's helmets appeared above their heads. They say, "'Met on!" as they grabbed the helmets and equipped them, completing their transformation into Go-On Gold and Silver, respectively.

The Go-On Wings make their introduction.

"Break Limit, Go-On Gold!"

"Sparkling World, Go-On Silver!"

Surprisingly, Goro doesn't need an introduction, but a banter. "The burning red flames of rebirth unleashed!", which is relevant to his current form, Jet Phoenix Armor.

The two Go-On Wings finish their introduction, "Take off, Go-On Wings!"

"Shhuuwhaachhh!", G7 Icarus XYZ ascends to the skies, and sends out his Fin-Feathers from his wings. The Fin-Feathers serve as attack drones that attack enemies under Goro's control. "Go faster beyond fate!", he bantered as he sent these Fin-Feathers attack Cross-Z Magma.

Banjou managed to break through the Fin-Feathers, and even go as far to swat them out of the way as if they were mere flies. Go-On Gold and Silver double-teamed Cross-Z Magma before G7 Icarus XYZ (Jet Phoenix Armor) brought out the big guns. Or rather, brought two guns in the form of two Full Bottle Busters.

While Banjou managed to take down at least two Fin-Feathers, there are still more skewering him all while at the receiving end of a double-team from the Sutou siblings. When Cross-Z Magma cleared his way off the two Go-On Wings, Banjou finds himself at the receiving end of G7 Icarus XYZ calling back his Fin-Feathers into their firing position and Goro wielding two Full Bottle Busters in their Buster Cannon modes. After Goro already turned his Build Driver's crank, it seems that his Fin-Feathers are now charging multicolored energy from their micro-cannons.

*[Build Driver's voice] Ready, go!*

"That can't be good.", Banjou said as this is not going to end well for him as Goro is about to beam spam him.

"Taste the rainbow, motherfucker!", Goro smugly declares as he is about to open fire. Surprisingly, this is not the first time Hiroto and Miu hear Goro resorting to profanity. Both Izumi siblings are prone to swear and have a tendency to showcase crude and offensive behavior, especially towards enemies.

"Seriously, do you really have to say that?", even Miu is alienated with Goro's "colorful" vocabulary.

*[G7 Jet Visor's voice] Bakunetsu Finish!*

G7 Icarus XYZ's Fin-Feathers fired every multicolored beams and his Full Bottle Busters at Cross-Z Magma, spamming multiple beams in quick succession, ripped straight from a Gundam anime. Cross-Z Magma finds himself in the receiving end of continuous beam spams with devastating firepower, capable enough of almost destroying the ruins within the stadium.

Ragdolled by the beams, Banjou staggers. "Seriously, you've been watching too much Gundam!"

"Why wouldn't I? I always use other things like anime and video games to find inspiration in creating things!", Goro bluntly points out.

"You and your weird imagination...", Banjou throws back another snarky comment, before G7 Icarus XYZ's Fin-Feathers continue to charge and attack him.

That didn't stop Cross-Z Magma from swatting all of G7 Icarus XYZ's Fin-Feathers like flies as Banjou and Goro tussle again. Since their forms are both associated to the element of fire, their burning spirits ignite further.


Go-On Gold helps Icarus XYZ. Hiroto manages to withstand Banjou's brute strength the only way he knew how, giving Miu enough time to catch the musclehead off guard. However, as Banjou stands up after getting tripped on the ground by Silver, Banjou begins to stop and having a vision of what appears to be in Evolto's viewpoint during the time when the evil alien obliterated Mars millions of years ago.

"What's going on...?", Banjou subconsciously struggled upon having this hallucination. That's when he loses control of himself and suddenly lashed out on the Sutou siblings.

"That can't be good...", said Goro as he's seeing this is not what he planned.

Cross-Z Magma haphazardly pummels Miu with a Volcanic Finish after turning the Vortex Crank of his Build Driver.

"Miu!", Hiroto runs to his sister after she got her transformation down by a berserk Cross-Z.

"Taki, change of plans. We need to subdue Cross-Z before he could lose control of himself!", Goro radios the two ninjas.

Thanks to their ability to teleport to their allies, Taki and Natsu arrived on Goro's position. The ninja now donned the Victory Armor as it's too dangerous to face a Rider in their strongest form without any defense.

"What's gotten into him?", asked Natsu.

"Fight first, ask questions later!", Taki replied. "Let's go, Natsu!"

Goro and the two ninjas separate Cross-Z from the Go-On Wings.

"Banjou, the training is over!", said Goro as he putting an effort to subdue Cross-Z.

"I can't...control my power!", Banjou replied, while his body continued attacking Goro against his will.

"I thought Evolto already ceased to exist since Pandora's Box, the only thing that his soul is bound to, is destroyed. But, how?", Goro noted that Evolto's demise is because Pandora's Box is destroyed, and it only left Banjou unable to transform at that time. The question is, what made Banjou to lose control of his powers in the first place?

*Volcanic Knuckle! Aachaa!*

Cross-Z Magma's unbridled raw power is too much for Hiroto, when the Philosopher finds himself in a receiving end of a Dragon Full Bottle (normal) charged Volcanic Knuckle, Gold's transformation is down.

"Even Hiroto-san could not stand the brunt of a Volcanic Knuckle! Figures.", Goro muttered. "Taki, let's stop Banjou ourselves."

"You might need some help, Izumi-san!", Sento, now transformed into Build Genius, arrived to Goro's side. "Let's stop him together!"

*[Genius Bottle voice A] One side, [Genius Bottle voice B] Gyaku side, [Both A and B] All side!* / *[G7 Jet Visor's voice] Dies illa, dies irae, Calamitatis et miseriae~*

*[Build Driver's voice] Ready, go!*

Both Build and Icarus XYZ leap simultaneously as they perform a double Rider Kick at the berserk Cross-Z.

*[Genius Bottle voice] Genius Finish!* / *[G7 Jet Visor's voice] Bakunetsu Finish!*

Build Genius's kick landed on the target, and the Nebula Gases inside Banjou have been suppressed, and subsequently the latter managed to regain control of himself and his transformation is powered down.

"Don't worry, the Nebula Gas in Banjou has been curbed down. I didn't think that would happen to him. Even though Evolto is erased from existence.", said Sento.

"I thought of the same thing...", Goro added.

Banjou woke up seconds later, he had no idea what just happened after having a vision of the time Evolto destroyed Mars centuries ago. Even though that he has recently regained his powers, and the fact that he is born from the fragments of the evil alien's genes, Banjou wasn't supposed to have these memory relapse even though Evolto's existence is erased after Pandora's Box is destroyed.

What's even more surprising that his Dragon Full Bottle, which is supposed to be blue, turned silver during the middle of the battle. The fact that he used it on the Magma Knuckle and threw a Volcanic Knuckle on Go-On Gold. Both Sento and Goro are shocked at the sight of the sudden change of Banjou's Dragon bottle.

"Is that Full Bottle of yours supposed to be blue?", asked Taki upon her eyes locked on the Full Bottle.

"I have no idea what just happened. I also asked of the same thing to myself!", Banjou replied.


Meanwhile, on the outside of Mount Minami...

Kamen Riders Rogue and Grease managed to clean sweep of Foundation X's forces, the whole area is littered full of corpses of Guardians, Dopants, and other Inves. For whatever reason, Foundation X is most likely testing the Kamen Riders due to the fact that they sent away their artificially created and/or resurrected creatures from Dopants, Greeeds/Yummies, Zodiarts, Phantoms, Inves, numberless Roidmudes, Ganma, and Bugster viruses to fight the Riders and Go-Ongers.

Gentoku and Kazumi powered down their transformations by removing the trinkets of their Sclash Drivers.

"Just why Foundation X kept sending their artificially-made creatures for us to deal with them? Are they been gathering combat data of the Rider System as well?", Gentoku panted, seemingly exhausted after the whole day fighting the Foundation's legion of monsters.

"Beats me, beardy. I don't sound like Goro-chan whenever he's thinking of assumptions whatsoever.", Kazumi replied. As he and Gentoku are about to walk off to the forest, the farmer stumbles something which causes him to stumble onto the ground. "What in God's name was that...? Hey, what's this? A chip with a number "3". Does this look familiar to you, beardy?"

That's when Gentoku figured out that's actual an Engine Soul belonging to one of the Go-Ongers. "That thing belonged to one of the Go-Ongers, potato."

That Engine Soul Kazumi stumbled into actually belonged to Engine Bear-RV, the partner of Saki/Go-On Yellow. To Kazumi's surprise, the Soul started shaking. But, he kept the Engine Soul into the pocket of his jacket. The two unlikely allies left the scene.

As Gentoku and Kazumi leave Mount Minami through the forest, from within the first level of the mountain, Foundation X agent, Amataro Kai is watching them from the distance. Since the Foundation are responsible for that incident in the Machine World, Kai had six of the Engines' Souls scattered around Build's world. The fact that Kazumi stumbled into Bear-RV's Engine, they have no idea where their Engine Casts' are.

"Excellent.", Kai spoke to himself, as always without any evident emotion. "The plan is working according to what I have calculated.", he opens a briefcase with a "X" branded, containing all of the six Engines' Engine Casts, from Speedor, Buson, Bear-RV, Birca, Gunpherd, and Carrigator. "It's only a matter of time that the Go-Ongers will realize the foolishness of leaving their world behind. With the combat data gathered from each of the Riders, the Foundation's grand plan will be achieved."

Kai closed his briefcase as he leaves Mount Minami as his helicopter escort is waiting for him.


At nascita, Anzu returns and regroups with her team after having lost sight of the Phantom Medusa. She will resume hunting the resurrected Phantom tomorrow.

While Goro and Sento have been discussing about Banjou's Hazard Level escalation, Gentoku and Kazumi returned back to the cafe and showed the gang the surprise they stumble in Mount Minami.

"You guys are so not gonna believe this. After we laid waste on those Foundation freaks, beardy and I stumbled into this.", Kazumi then presents what appears to be Bear-RV's Engine Soul, surprising even the Go-Ongers.

"Kazumin, is that-", Anzu shook her head in surprise looking at the yellow Engine Soul.

"That's Bear-R's Engine Soul!", said Sosuke as he takes the Engine Soul from Kazumi. "Give me that.", he inserts Bear-RV's Soul into his Go-Phone, and Bear-R's soul form manifests through the Go-Phone's screen right in front of Team Build and the SOLGU operatives.

"Sosuke, what's going on?", asked the yellow Engine.

"I wanna ask you something? Is it true that there were guys from the Human World attacked the Machine World?", asked the Speed King.

"Yeah. I remembered one of the humans wearing a white suit and holding a briefcase with a letter "X". They took Speedor and the others..."

Even Bear-RV remembered that Foundation X was the culprit of the attack in the Machine World. And the human in question mentioned by Bear-R refers to Amataro Kai, the Foundation's benefactor.

Bear-R continued. "Those people took our Engine Casts and our Engine Souls have been scattered here in the Human World."

"So that's why Foundation X purposely dropped the little bear's Engine Soul at Mount Minami at that time...", Sento deduced.

"Those Foundation X creeps are so going to pay!", Sosuke promises that he the Foundation will pay the price for kidnapping not only his partner, Speedor, but the other Engines.

When asked of Saki's whereabouts, Sosuke reveals that Saki left the Go-Ongers ever since the Gaiark threat has been eliminated 10 years have passed. While Saki is currently working with the Japanese government in the other Human World, the government itself implemented a Sentai Activity Ban Law. When the Riders came contact to Sosuke about the disappearance of the other Engines, along with Neo Faust's presence, the Go-Ongers are forced to transform in order to repel them, which results them into being labeled as terrorists.

Learning this, Bear-RV is heartbroken, with Saki not being with the Go-Ongers. Saki herself isn't aware the her partner was captured by an underground evil organization whose goal is to expand their illegal experiments for profit.

"Saki...", Bear-RV is driven to tears after learning what happened from Sosuke.

"It's really heartwrenching for someone not to be someone who is close to them.", Goro lamented. "And as for the other Engines' Soul and Engine Casts, we got to do something about them before the Foundation would plan to do something..."

"Goro, should we let Prime Minister Suzumura know?", asked Anzu.

"I was thinking of the same thing. But, not now.", Goro reciprocated his older sister's question. "But first, we're going to have Bear-RV-san in to question later before we inform the Prime Minister."


Engine Soul obtained: Bear RV

Engine Souls remaining: 5 (Speedor, Buson, Birca, Gunpherd, Carrigator)

Engine Soul count:

- Engine Soul in Kamen Rider Grease's possession: 1 (Bear-RV)

- Engine Soul in Go-On Red's possession: 4 (Kishamoth, T-Line, K-Line, Machalcon)

- Engine Soul in Go-On Gold's possession: 2 (Toripter, Jum-bowhale)

- Engine Soul in Go-On Silver's possession: 1 (Jetras)


Author's Note:

Goro's other catchphrase back in Vol. 3, "Go faster beyond fate!" serves as his official catchphrase throughout (originally that's used for his New G7 Icarus form and Archangel Cerberus form). Back at that time, I was having a hard time thinking different catchphrases for the character. He uses different catchphrases before and after transformation, but not to the extent of Tendou's grandmother's quotes.

Before giving Banjou the Gundam SEED Destiny-esque beam spam in Jet Phoenix Armor, Goro even says "Taste the rainbow, motherfucker!" That phrase actually came from a Nostalgia Critic episode focusing a Care Bears movie that sees a rainbow defeating an eagle. Funny enough, the "Beam Spam" trope in TV tropes' poster boy, the Strike Freedom from the aforementioned Anime had the said phrase as a caption. The said phrase also doubles as a meme commonly associated to rainbows.

Kazumi and Gentoku stumbling in BearRV's Engine Soul after they fought Foundation X's grunts is a subtle foreshadowing to 10 Years Grand Prix when a kid going by the name of Soji (not to be confused with Tendou) stumbles to BearRV's Soul and Engine Cast causes him to be targeted by the authorities.

Kazumi being the one who gets hold of BearR's Engine Soul also doubles as a reference to the fact being a Rider from Hokuto, the Kuma Full Bottle is also colored yellow, matching the Engine's appearance.

Kai is this story's Knight of Cerebus, since his role in the story ever since his introduction serving as the mysterious main antagonist that pose a threat to the Go-Ongers and Kamen Riders. What made him separate from Neo Faust and the Pollution Ministers is that Kai is bereft of any humor in a lighthearted story, he even shows no emotion and most of his actions, and by proxy, Foundation X, are played seriously to realistic levels.