Tomb Year 19191, February 6th.

This is a day that will determine the fate of all mankind...

For after this day, the total population of the world is likely to be halved instantly.

The mecha army of the military nation, Country of Mecha, is approaching...

While the remnants of the Empire Alliance can only build their last line of defense on the border of Lias Sand Hill.

So at this moment, at the junction of these two countries, a battle that will decide the fate of mankind is underway.

The ground is covered with shells, and the original terrain has long been exploded beyond recognition by artillery fire. Intense flames are spreading wildly, creating a scorched and endless wasteland, like a scene from hell.

"Bang! Bang! Bang! Bang! Bang! Bang! ..." Heavy footsteps sounded.

However, on top of this hellish landscape scorched by flames, a steel torrent is slowly crossing the fire, advancing fearlessly across the continent and crushing every obstacle in its path.

These are huge steel humanoid mechas, averaging around seven or eight meters tall, covered in thick armor. The complex mechanical structures and wires inside can be clearly seen between the armor plates.

The PLO-1 full-armor heavy humanoid mecha, the strongest and fearless warriors of the Country of Mecha, are codenamed "Red-Eyed Machines".

From the outside, they have no beauty to speak of, their appearance is nothing more than a large iron box formed by thick armor plates. Each heavy humanoid mecha contains a driver who operates these cumbersome iron boxes.

However, it is this group of "iron boxes" that are the most troubling and fearsome enemies of the Empire. There isn't a single part of them designed for decoration - every part of them is a deadly weapon.

Their main firepower equipment is extremely simple, with a large-caliber automatic multi-barreled rotating machine gun - "Flame-Enhanced" on both arms. Each side has two barrels, totaling four firepower output points, with a "Flame-Enchanted Bullet" auto-reloading mechanism of the same size on their back.

They can be said to have swept through all armed forces of the Empire with these four large-caliber machine guns and their fearless heavy armor. Whether it is airborne or land-based, as long as they are enemies, they will be utterly destroyed without mercy.

Of course, besides these basic iron boxes with four large-caliber machine guns, there are also many modified special models, such as the heavy firepower model carrying the "Anti-Fortress High-Power Laser Beam Cannon" or the strategic model equipped with "Flight Wings". These are mixed within the steel torrent of the army, greatly reducing the margin of error for the iron-blooded army.

The bright red probes on the iron boxes' heads have also led to them being nicknamed "Red-Eyed Iron Boxes" by the Empire's army.

-

And today, the Country of Mecha is launching a full-scale attack on the Empire from its national borders with all its military strength, 14,210 "Red-Eyed Iron Boxes".

Behind the "iron box" army are countless wind magic airborne engineers whose numbers are so vast they block out the sky. Under the cover of the humanoid mecha army, they advance forward slowly and safely, all with a cold and murderous demeanor.

Their "Long-range Magic Rifles" emit an ominous cold gleam under the moonlight.

-

On the other side are the Imperial forces - the passive side, the side being invaded.

The Empire has built a thick defensive line, deploying everything in the country that can be used for warfare here. Various magic-modified large cannons stand on the hilltops, with countless fortresses and soldiers covering the entire hill.

However, they are trembling, fearful, and cowering in the face of the steel torrent...

This is because the ignorant high-level officials of the Empire disdain to develop war mechas and exoskeletons, considering them to be barbaric and primitive, even claiming that they are not worth wasting money on warfare.

But the final result... They were driven to a dead end by the steel torrent of the Country of Mecha, beaten back step by step, and are now on the edge of their national border.

Behind them are the cities of the Empire. Though all the civilians have been evacuated, the moment the enemy invades, there will be no peace for them.

Once their territory is taken, the Empire will fall into an endless passive struggle, enslaved by the Country of Mecha for a lifetime.So even in death, they must hold on to this last line of defense!

However, sometimes wars cannot be changed by belief alone...

Over 14,000 "red-eyed iron boxes" advanced, ignoring the flames and pits on the ground, and no terrain or obstacles could stop their progress.

【Bang! Bang! Bang! Bang! Bang! Bang!...】

In an instant, the Empire's magical cannons fired, and huge flaming shells flew past the torrent of steel, exploding with deafening sounds.

But the raging fire and impact had no effect on these steel red-eyed armor. To them, fire was just tickling, and the impact could only make them shake twice.

Even in the center of an explosion, these hellish monsters seemed invincible.

That's because neither fire nor lightning magic can affect them since their armor is coated with an anti-magic layer. The explosion debris was blocked by the anti-magic field.

As they advanced to a certain distance, when the red-eyed machines detected that the enemy on the hill had entered their range, the real hell and the real war began...

【Click! Click! Click! Click!...】

All the red-eyed mechas stopped, their strong legs spread apart, two support frames were ejected from the ammunition box on their backs, deeply embedded in the ground, and slowly raised their arms, aiming the large-caliber multi-barreled machine guns at the imperial army on the hill.

14,000 humanoid mechas and more than 50,000 heavy firepower multi-barreled fire god cannons, in one second, could fire hundreds of flame-attribute armor-piercing explosive bullets.

【Boom! Boom! Boom! Boom! Boom!...】

At this moment, countless large bullets lit up the sky as they slanted towards the hill, blocking out the sun, and illuminating the night.

But this was the origin of killing, not the light of hope…

In the next second, the entire hill and the entire Imperial Army were bathed in the overlapping attacks of rain-like flames of armor-piercing bullets and explosive bullets!

"Ah! Help me! My leg!"

"Help!"

"Medic! Medic! Here... Ah!"

"Retreat! Retreat! Everyone retreat!"

"Run!"

The Empire's artillery, fortresses, and soldiers were nothing more than fragile paper under those bullets that could pierce through everything.

The sound of bullets firing, explosions, screams, and collapsing buildings formed the symphony of the war.

The battle was one-sided, and the Country of Mecha's iron-blooded onslaught destroyed the Empire's fragile army in an instant.

No way…

The gap between the military power of the two countries is too big. One is a total military state focused on war and resources, and the other is a democratic nation that enjoys the status quo and human rights.

The clash of iron-blooded order and free rights proves that too much freedom might not be a good thing for mankind.

However, future events showed that tyranny could not lead humanity forward, and the Empire of Mecha had to compromise and learn the Empire's freedom doctrine.

That's because…

This battle, which determined the fate of mankind, did not end with the iron-blooded victory of the Country of Mecha.

The sky, dyed red with fire, suddenly flickered with a deep shadow…

A black humanoid machine with wings roared from the Empire's sky, instantly flying over the battlefield, stopping at the top of the Empire Army's mountain.

Particularly, its shiny golden mechanical eyes, like a sentry overlooking everything from the sky.