Disclaimer: I own nothing.

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The GATE has appeared in September 2nd 1945 or in the Imperial Japanese Calendar, the year 2905 with it appeared.

This strange phenomenon has claimed the lives of many and the course of history was changed forever.

A portal between worlds, many had sought to claim the GATE as their own, but the GATE has appeared in a nation where it was heavily defended by a well-known empire and an Empire of great respect and power.

Its name is The Empire of Japan or many called it as the Japanese Empire, a nation with a long history and a nation with rich culture.

This particular Empire has gone through a series of modernization throughout the past century and has managed to keep up or rather surpassed the Western nations in terms of technology.

The Empire of Japan has been around for nearly 3 millennia and considered to be one of the oldest empire in the world.

But where do we start? Ah yes when the GATE has opened in Ginza, Tokyo, Empire of Japan. When the Empire was still recovering from a recently won war.

And this is where our story begins.

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Imperial Castle, Tokyo, Empire of Japan. Imperial Calendar 2905 (September 2nd 1945)

From on the Imperial Wall several Imperial Guardsmen and Policemen were running on one of the watchtowers and on the wall preparing defences against the Invading 'Roman' Army.

We see a man around in his early thirties giving orders to each of the Imperial Guardsmen and the Police stationed at the gate.

His name is Itami Youji, Second Lieutenant of the Imperial Japanese Army and he was the one who was ordering the Imperial Guards and the police to take up arms and put up defensive strongholds against the invading army.

Earlier in the day when a mysterious Roman building had suddenly appeared in Ginza District, he was there when it happened and so happens to be his day off when the Romans and creatures from some fantasy stories began slaughtering everyone; whether they were old or young, they killed them without mercy.

As of now he was given command of this side of the wall with the approval from the Shōwa Emperor.

"You get to that position, you mount that Machine Gun we might need its firepower to hold off those invaders, and you get more weapons from the storage room, we need everything that we possibly have to defend this wall."

"Yes sir."

Three Imperial Guards saluted at Itami as they began to move towards their designated location.

One of the Imperial Guards approached him.

"Sir, we have several Type 4 70 mm Rocket Launchers in the storage, should we use them?"

Itami gave him a confused look.

"Since when you guys have those Rocket Launchers? Did the Imperial High Command issued an order for you guys to have them?"

Itami questioned the Guard. He even began to wonder if they were actually that crazy to give a Guardsmen some Rocket Launchers.

"Yes sir, Imperial High Command issued those orders since the US declared war on us back in 1941. Back then they were afraid that the Americans would directly invade the Home Island and the Capital, so to ensure the safety of the Emperor; they gave us these Rocket Launchers for extra defense if such an invasion will happen and it has been approved by the Emperor Himself."

Itami looked at the guard with shock.

Wow... here I thought they were crazy.

Itami shook his head, now wasn't the time to think about it.

"Good, we might need those to shoot down any enemy artillery pieces should they be in the range of those Rocket Launchers, any reinforcements?"

"Yes sir, the first infantry regiment and elements from the First, Second, and Third Armored and Mechanized Divisions are approaching as fast as they can to support us."

Itami smiled. They're guns will mow down the invaders within minutes leaving but corpses of the enemy.

"We also received news that the IJAAF will be also supporting us in clearing the skies from enemy Dragon Riders, they also said they'll be sending in the newly developed Jet and Rocket Fighters to aid us."

"Really?! That's great, so what's next?"

"The IJN Yamato and the Musashi, with their Destroyer escorts are approaching at the Bay Area as we spe--

The Guard was suddenly interrupted by a police shouting:

"Incoming enemy forces!"

Itami gritted his teeth as he saw the invading Army.

"Prepare yourselves! Don't let the enemy take a single step to the Imperial Palace Gate! Defend it at all costs!"

Itami ordered or rather shouted at the Guards and the Police, while they replied:

"Yes sir!"

"You, get those Rocket Launchers along with several men to assist you, we need those Rocket Launchers now!"

"Yes sir!"

The Imperial Guard saluted at Itami as he and several others were going to the storage room to fetch those weapons.

"All men open fire!"

Itami made the order and after that all hell let loose.

All weapons ranging from Rifles to Heavy Machine Guns all fired at the same time, shooting at the invaders with concentrated and determined expressions on their faces as they rain with merciless fire.

Itami watched the scene as he remembered a certain day with the same feeling as it is right now.

Heh reminds of D-day.

Itami remembers that day when he participated the combined allied invasion of Nazi occupied Europe, this scene brought him back memories.

Men falling from gunshots, others got their intestines blown out of bloody gore, some have missing limbs, it was a day to remember.

So this is how those Germans felt when they defended against us? Can't say I'm impressed.

Before long the same Guard along with several others brought the Rocket Launchers and began positioning themselves at the wall.

"Artillery incoming!"

One of the Police shouted as the enemy Ballistae began shooting rocks, while on the other side of the wall, many civilians scattered around seeking shelter from the raining rocks.

"Use the Rocket Launchers and aim at the enemy artillery now!"

Itami ordered the men as they replied:

"Yes sir!"

The ones who were holding the Type 4 Rocket Launchers began firing the 70 mm on the enemy ballistaes and the said enemy artillery pieces were destroyed by the resulting explosion of the 70 mm rocket.

This process has repeated for several minutes before the radio spoke up.

"This is the IJN Yamato calling in any Japanese forces in Tokyo, we need target coordinates if we are to provide fire support. I repeat, we need target coordinates if we are to provide fire support."

Without any hesitation Itami replied.

"This is Second Lieutenant, Itami Youji of the Imperial Army; we need fire support outside of the Imperial Palace. I repeat outside of the Imperial Palace."

For a few moments the radio fell silent before replying.

"Second Lieutenant, please reconfirm that last message, did you say outside of the Imperial Palace?"

"Yes outside of the Imperial Palace at the Hanzo Gate and we have an invading army laying siege! We need that damn fire support!"

"Affirmative Lieutenant send those coordinates and commence naval bombardment, but be advised: our guns impact blast radius could be considered a danger close to your position, copy in?"

"Yes copy on that danger Yamato, fire for effect after we send in those coordinates."

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Saderan POV

"Damn those Barbarians, that was the last Ballistae we have."

The leading commander of the Saderan expeditionary force let out a frustrated tone.

Earlier in the day after we had reached on the other side of the GATE, we had made great progress on our advancement of this Barbarian land, until we had decided to lay siege of their fortress.

At the first we had thought it was easy for us to take before those Barbarians shot us with their strange magic.

Laud thundering booms as the barbarians shot us with their magic as everyone whether from the demi humans to a Saderan soldier fell down from the Barbarians magic.

At first we had tried to use the rams to break through the gate but the barbarians kept on firing anyone who tried to close the distance between them and us.

Then we tried firing our arrows, but the barbarians shot them down before they even released a single arrow.

Next we had tried using the ballistae and they were able to launch without so much of a scratch, after it had launched for a few moments then the barbarians retaliated with their explosion spells. Seriously how many wizards they can possibly have at their disposal?

Unfortunately for us we lost control over the skies due to some 'Iron Birds' flying at incomprehensible speed and most of the aerial units were lost during the ordeal while some were forced to retreat to the GATE due to heavy losses.

As I was about to give another order to send in more troops, until a messenger galloping towards us with a fearful expression on his face.

"My Lord! I bring you grave news. "

The messenger called out the commander as he desperately tried climb down his horse.

The commander curious asked the messenger.

"What news do you bring here messenger?"

The messenger replied with a fearful tone that spoke how badly it is.

"My Lord an army of barbarians has appeared on our left flank, we outnumber them significantly but we have taken heavy casualties approximately about two out of three legions."

"What!? That's impossible there's no way we are losing that fast, we just got here in this world, how can that be possible?"

The commander exclaimed, this was impossible, the mighty legions of Sadera are losing, unbelievable.

As the commander was about to tell the messenger until another messenger appeared with the same expression as the first.

"My Lord! An army of Barbarians has on our right flank and they what appears to be several dozen iron war elephants with one large head and two smaller heads, while the other iron elephants has one head but a smaller body than the one with three heads."

"What?! How can those barbarians possessed those creatures, do they have sorcerers that controls them?"

The commander asked, the messenger shook his head.

"No, we saw no sorcerers amongst their ranks that controls them my Lord."

"How... can this... be possible?... there's no... way it can be true."

The commander spoke slowly, the morale has already been too low to maintain, combined with the news the morale has started plummet to deep unreachable levels.

Then they heard thunderous boom sound too loud to be an ordinary thunder storm.

After that, they had heard multiple whistling sounds coming from above.

As the commander looked up and what he saw was falling objects moving at unbelievable speeds.

What in Em--

The commander was never able to finish his thought, as the loud fiery explosion took over his form and the next thing he knew was permanent darkness.

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Imperial Palace, Tokyo Imperial Calendar 2905 (09-02-1945)

High above of Tokyo, a squadron of the newly developed Rikugun Ki-93 Attack Aircraft along with their fellow escorts namely the Nakajima J9Y Kikka and the Nakajima Ki-201 Karyū Jet Fighters all carrying with their respective payloads as they flew towards the Imperial Palace, while shooting down any enemy Dragon Riders along the way.

Back at the Imperial Palace Itami along with the police and the guards all took cover from the Yamato and her sister ship's destructive artillery support. While they heard the enemy speaking in their unknown language in a state of panic.

What was that?!

The commander is dead?!

What kind of magic they've used?!

It came from a ship, no two ships exactly twenty-five leagues!

What?! Twenty-five leagues?! How is that even possible?!

Even though they can't understand their but it served as a great boost to the defenders morale.

Itami then heard an unfamiliar sound above.

Curious he looked above and saw an unfamiliar squadron of war planes, but when he saw the insignia at the side of the planes Itami couldn't help but grin and shouted where everyone can hear his voice, and pointed at the sky.

"EVERYONE REINFORCEMENTS HAS ARRIVED!!!"

When the defenders saw where Itami was pointing at and their morale has gone so high they practically even cheered in agreement.

In Response the war planes began to drop their payload on the enemy forces and multiple explosions began to take place amongst the ranks of the invading army.

"What are those things?!"

"Run away those are Hardy's demons!"

Before they could even tried to escape they were met by the 1st infantry regiment who had just finished fighting the other enemy forces few miles east of their location.

Before the invaders could even react they were met a charging battle-hardened Japanese infantry while they all cried out in a loud voice:

"TENNŌ HEIKĀ BANZAI!!!"

The Japanese 1st infantry regiment all charged at the invading forces with their bayonets affixed on their rifles; they weren't just any normal infantry regiment, no they were one of the many veteran forces in the Imperial Army from the Second Sino-Japanese war and were well versed in closed combat in their experience against the Chinese.

While some of the invaders tried holding their ground against the charging infantry, they have failed miserably against them due to the shock and trauma they received earlier.

And what's worse for them was the timely arrival of the 1st, 2nd, and 3rd mechanized and armored divisions and began firing from their cannons to their Machine Guns while carefully shooting at the enemy, not wanting to hit any friendlies by accident.

Itami and the defenders looked at the massacre with glee on their faces.

"Sir, the enemy is in disarray."

"Good, tell everyone to affix their bayonets. We are going to support the army the best we can."

"Yes sir."

The Guard saluted at Itami before calling out the defenders as they opened the gate and began jumping into the fray.

As the battle began to wind down as the enemy forces dropped their weapons and surrendered to the IJA.

Now they have awakened the Dragon and the Dragon has awakened with a terrible resolve.

And so began the Empire of Japan has officially declared war on a whole different world.

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And cut!

Hopefully you liked the first chapter of my fanfic story.

be sure to PM me for ideas and be sure to leave a review.

gabrielchiong11.