Crossover Shipgirls: Building a Dimensional Empire from Scratch

Colorado, Sector Seven.

An incalculable number of alien robots clashed across the open mountains and deserts.

Massive steel giants raced and collided on the battlefield, sparks flying as mechanical roars and explosions echoed across the land.

High-energy lasers and fusion cannons hit nearby mountains, shattering massive boulders into pieces.

Thousands of Terrorcons rained down from the sky, screeching as they attacked everything in sight.

Equipped with sharp blades on their heads and feet, the Terrorcons moved swiftly, tearing through tanks and turning them into scraps when they swarmed.

The battle between Transformers and Gundams was even fiercer.

The Decepticons unleashed their full firepower, using ion cannons to block anyone in their path.

Gudako, seeing Scourge charge in with a horde of lackeys, stopped holding back. She activated her thrusters and flew into the air, deploying her long-range strike modules.

Graviton cannons mounted on her head and shoulders rained down like a storm. After locking onto a target, the missile launchers on her back whoosh-whoosh-whoosh fired off a volley of Infected Missiles.

Boom—!

The Infected weapons exploded on the ground, creating several dark red spheres that obliterated everything within them.

Yet the Terrorcons continued to pour down from the sky, some crashing into the reservoir, others slamming into the ground, while a few even landed on the Gundams and starships.

The collision in the Klein fields shattered them into pieces, creating more explosions.

The chaotic scene on the battlefield was more intense than a Hollywood blockbuster.

The air was filled with steel, machinery, flames, and explosions.

Even the soldiers who had come to assist were pale, as in the battle between Transformers, light weapons had no effect whatsoever.

Only large-caliber tank cannons and rocket launchers could do any significant damage.

The battle was grossly imbalanced—the best they could do was stagger the larger robots, while a single fusion cannon from the Decepticons sent main battle tanks soaring into the air.

”Calling in airstrike squadron!! Requesting air support! Repeat, requesting air support!!”

The commanding officer tried to call for help, only to find that nearby signals had been completely cut off, and no message could get through.

Boom—!

Boom—Boom!!

After several rounds of combat,

the Hoover Dam was left in ruins, and the shielding mechanisms used to protect the AllSpark in Sector Seven had completely failed.

Whirr—

A faint signal wave emanated from underground.

Every Transformer present felt the unmistakable presence of this signal.

”The AllSpark!!! It’s the AllSpark!!”

”The AllSpark, the Transwarp Key, and Megatron are all here!!!”

The Decepticons grew even more excited. Everything they had longed for was right here!

Even though many Decepticons had never encountered the Terrorcons before, the moment they saw them, they knew they were here to steal the AllSpark and the Key. They quickly decided to destroy them all.

As for the Autobots and Maximals, they had always been bitter enemies, and it was clear that a decisive battle was about to unfold.

”First, grab the AllSpark!! Find the leader!!”

Soundwave, Starscream, and other Decepticons immediately changed course, charging toward the underground entrance.

”Stop them!”

Optimus Prime led the Autobots in pursuit.

At the entrance to the underground research center, two armies of steel giants collided, engaging in brutal hand-to-hand combat with melee weapons.

The Decepticons outnumbered the Autobots by far, and with their superior combat prowess, they quickly gained the upper hand, pushing Optimus Prime, Bumblebee, and the others into a disadvantageous position.

”Optimus Prime, you will die here today!!”

Soundwave fired his ion cannon relentlessly at Optimus Prime.

”Autobots!! Charge!!”

While the two sides clashed fiercely, the sound of explosions rang through the battlefield.

Boom—Boom—Boom—!

Accompanied by the earth-shaking noise, a red, white, and blue Gundam charged into the fray.

Its thrusters shot out bright flames as it flew low to the ground, swooping in from afar for a surprise attack.

In one hand, it held a beam saber, and in the other, an ion shield.

With a few swift slashes, the Decepticons blocking its way were torn into pieces.

The high-energy particle cuts on the Transformers’ metallic bodies went through them like a hot knife through butter, barely facing any resistance.

”Who?!!”

Soundwave quickly turned his head and saw a Gundam slightly taller than Optimus Prime.

”It’s been a while since I fought in this form... a bit nostalgic.”

Setsuna muttered to himself.

Most of the time, he used the Eternal Snowfall to take care of enemies. Occasionally, his subordinates would handle smaller problems for him.

But now, he felt this was a good warm-up opportunity, time to get the blood flowing.

One: The AllSpark was far too important—he had to hold it in his hands to feel secure.

Two: Fighting alongside the Transformers was just perfect for his Gundam form.

Big ships, giant cannons, and mech-on-mech combat were the epitome of every man’s dream!

”???”

”Bro?! I thought you were a starship guy?!”

Bumblebee completely didn’t understand where Setsuna had pulled out this mech from.

The Turn-A design looked a little odd, with modules on either side of the head making it resemble a white beard.

”I can also fight in Gundam form.”

Setsuna turned and sliced through a Terrorcon trying to sneak up behind him.

”???”

”You’re an Autobot?! No, you’re not a Cybertronian?!”

This was the first time the Decepticons saw a Gundam, and they were utterly shocked.

”Don’t worry about that.”

BAM—BAM—BAM—!

Soundwave fired his arm cannon repeatedly, but against the shield, the shots had no effect.

Clang—

Setsuna pierced through him, tossing the Decepticon aside. He collided with a nearby mountainside, getting buried under falling rocks.

With the absolute advantage in defense, strength, and speed, a few more hits from Setsuna destroyed the charging Decepticons, either dismantling them or smashing them into walls.

”Wow, you’re way stronger than that little girl with the hammer.”

Bumblebee didn’t even get a chance to join the fight, giving Setsuna a thumbs-up.

”Just... your mech is uglier than hers.”

”...”

Setsuna was momentarily taken aback by Bumblebee’s bluntness.

Well, the Turn-A Gundam had earned the title of the ultimate Gundam—its power was undeniable.

But it had sacrificed a bit of looks and wasn’t as handsome as Gudako’s Barbatos.

”I’ll switch to an Eva Unit or the Zero Model next time. Maybe I’ll take the Moonlight Butterfly and put it on that one...”

He continued charging ahead with the Autobots.

The security forces inside had never seen anything like this.

A Gundam, accompanied by a group of Transformers, charged through the base. The guards were so stunned that they forgot to use their heavy weapons. They fired a few symbolic shots and immediately turned tail to flee.

Who in their right mind would try to stop these steel giants with their puny human bodies?!

Guided by the holographic map, they soon arrived in front of the AllSpark.

It stood at the center of a large hall, its metallic shell glowing with a dim golden light.

”It’s really here...”

Optimus Prime slowly approached and gazed at the massive metal cube, which was several stories high.

He couldn’t help but feel a deep sense of awe.

Reaching out, he gently touched it.

The AllSpark immediately began to shrink, compressing down until it was the size of a small cube, and fell into his hand.

He handed the AllSpark to Setsuna.

”Keep it safe.”

As the leader of the Autobots, Optimus Prime would not break his word after agreeing to cooperate with Setsuna.

In fact, without Setsuna, the Autobots would never have seen the AllSpark.

”Hmm.”

Setsuna nodded slightly and took the AllSpark from him.

Whirr—

A strange, subtle sensation pulsed through Setsuna’s body, as if the power hidden within the metal cube was about to dissolve into his hand.

It felt similar to when he absorbed the Wisdom Cube back then.

After a moment of thought, he stored it in his inventory.

No rush for now, we can study it later.

”I’ve got the AllSpark. Expedition team, go secure the outside...”

Setsuna activated his communicator, just as the words left his mouth.

Boom—!

Boom boom boom—!

A series of explosions erupted from the nearby factory.

A twenty-meter-tall steel robot broke through the walls and charged forward like a rampaging bull.

”The AllSpark!!!”

”It’s mine!!!”

After the power was cut and continuous strikes disabled the freezing equipment holding Megatron, it was no surprise that the device failed.

He had just woken up and immediately sensed a very familiar presence.

The AllSpark, the Transwarp Key, the Decepticon allies, the Autobots, even the Terrorcons—all old acquaintances.

If it weren’t for the unfamiliar environment, Megatron would have sworn he was back on Cybertron.

”Megatron!!!”

”You’re here!!!”

Seeing his old rival, Optimus Prime immediately charged at him.

The two leaders embraced each other and began rolling toward the underground, throwing punches and using their weapons to strike each other on the head.

Bang—Clang—Ding!!!

The battle between the Autobot and Decepticon leaders played out like a high-octane drama in front of Setsuna.

Sparks flew as they fought, with metallic clashing sounds echoing everywhere.

Everywhere they went, it was like a demolition project, reducing the underground research facility to ruins.

”Boss!”

Bumblebee tried to jump in to help.

”Get out of the way!!!”

Megatron roared, slapping Bumblebee into a wall.

”Hurry! Get the AllSpark and go!!”

Bumblebee shouted to Setsuna.

He knew Setsuna was strong, but whether he could defeat Megatron was another question. The Eternal Snowfall was still parked outside.

In the Transformers’ world, only the leaders could defeat each other. The leaders of both factions held a significant power over their subordinates.

”Tch.”

Setsuna leaped into the fray in his Turn-A Gundam, positioning himself between the two.

”Who are you?!”

Megatron growled, his gaze fixed on the Gundam.

He looked up and down at the Turn-A, wondering if he had been away from Cybertron so long that the Autobots had started modifying themselves?

But as he focused his senses, he realized that this was no Cybertronian.

It was a pure mechanical construct.

”Wait! You took the AllSpark?!”

After a moment, Megatron recalled the scene earlier.

He had been after the AllSpark, but had been tangled with Optimus Prime.

”Hand over the AllSpark!!!”

The massive steel giant thundered forward, charging at Setsuna.

”Let me see just how strong the Decepticon leader is.”

Setsuna stood his ground, activating the Turn-A’s weapon system.

In the next moment...

Boom!!

The Graviton Cannon locked onto its target and fired.

Megatron was hit by an immense burst of energy, sending the twenty-meter-tall Decepticon flying uncontrollably backward.

The Decepticons, Terrorcons, and Maximals engaged in hand-to-hand combat nearby quickly turned around, only to see a dark red beam of light burst from the ground, ripping open a massive crater with a diameter of several dozen meters.

Megatron was blasted into the sky by the beam, disappearing into the high heavens.

”...”

Bumblebee stared at the Graviton Cannon on the Turn-A, dumbfounded.

He had never seen anything so outrageous.

”Bro, your weapon looks pretty Decepticon-like?”

...

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