A/N: Hold your seatbelts on, cause this is gonna be a wild ride. I don't own GATE or any other universe except this story.

Enjoy!

New Baghdad, 2060

Pro1's POV:

Gideon: -Irons is confirmed EKIA, I repeat, Irons is confirmed EKIA.

My fireteam of Sentinels, consisting of Downneck, UMP-9, Skippy, Crim, and Putri all cheered.

Me: We did it.

Downneck: After 3 years.

Crim: It started back in 2057.

Skippy: And here we are.

Me: Celebrating our victory.

Putri: Yay!

We had gained a major foothold. No more were we in the defensive. Atlas forces were retreating or getting eliminated, the corporation would cease to exist after this day. No more should they threaten the world, or try to unleash Manticore on everyone again.

Me: What are you guys planning?

Crim: Dunno.

Downneck: Probably gonna hang out with some Gopniks, or Tovarischs. Or maybe...Putri....

Putri blushed.

Putri: Ara ara Downneck.

Skippy: I'm still undecided.

UMP-9: I would like to get a boyfriend! (yandere vibes)

Me: Well....okay, not unexpected of you UMP-9.

She smiles....evilly.

Me (sweatdrops): Okay, but please don't go yandere.

UMP-9 (goes back to normal): Hai! (Yes!)

Me: Right, where were we?

All 6 of us, standing onto of Iron's HQ, looked below to see the flames as Gideon and Mitchell were still there.

Me: So what now Gideon?

Gideon: We reform Atlas.

Me: Alright, that's your job.

Gideon: I know mate.

Me: Mitchell?

Mitchell: Gonna go back into the Marines.

Me: Good. I guess I'm going back as well. Ooorah?

Mitchell: Ooorah. And for Cormack's sake.

Me (I look down): Yeah......

Just as the dust was about to settle, a blue portal opened.

Me: Holy sh*t! It's pulling us in!

Downneck: Grab onto one of the bars!

We try to grab onto the bars as the portal kept sucking us in, with Gideon, Mitchell, and then Ilona trying to pull us back, to no avail!

My fireteam: AHHHHHHHHHHHHHHHH!!!!!!!! (we get sucked into the portal)

Gideon: Goddamnit!

Mitchell: F*CK!

Ilona: It's too late.

As we got sucked in, I start to wonder where it would take us.

Me (thinking): Hopefully it's not some fantasy world.....I hope.

Ginza District, Tokyo, World 2

Our Team: AHHHHHHHHH!!!!!

We almost landed face first onto the crowded streets below, but due to our exos, we soften our falls with our boost jump.

Me: Remember! Short bursts to control your fall!

Doing just that, we landed on the ground with a small "thud".

Downneck: Phew.

Crim: At least we're not goners.

Me (speaking on my wrist tablet): Scan the area.

Tablet Systems: Scanning area.....

The systems then take a few seconds.

Tablet Systems: Area confirmed. You are in Ginza District, Tokyo, 2021.

Me: You know what this means guys?

UMP-9: Teleported back in time?

Skippy: It would appear so.

Me (muttering): Vui lắm. Rất là vui. (Very fun. So much fun.) (sarcastic voice)

Downneck: Anyways. So we're in Japan.

Crim: Tokyo to be exact.

Putri: Though does everyone here know Japanese?

We all nodded.

Me: Well good for us. Let's ask a police officer where the Imperial Palace is.

Crim: Imperial Palace?

Me: Apparently some Palace that's famous here.

Downneck: Right.

UMP-9: But wouldn't it be dangerous to go in broad daylight with our exos on? They don't even know what it is! Not to mention the fact that we are soldiers!

Me: Well, I'm a Marine, so yeah. But anyways, Downneck?

Downneck: Yeah?

Me: Hold some of my gear, I'm gonna go talk to the police officer.

Downneck: Alright.

Me: And keep an eye on everyone, specifically your potential new girlfriend Putri over there.

They both blush.

Me: Ha! (gives Downneck some of my gear as I go talk to the police officer)

As I do so, I start to look around my surroundings.

Me: Hm. Seems like a normal day here.

I then approach the officer and ask him for directions.

Me (IJ): Sir? Do you know where the Imperial Palace is?

The police officer probably recognized me as a foreigner, due to my shabby Sentinel pilot uniform from when we had to fly in with the 37th Airborne.

Police Officer #1 (IJ): A foreigner huh? And on leave as well? Well, the way to the Imperial Palace is this way-

As he was talking, I noticed strange people is Roman-like uniforms trying to disturb the peace. They looked about a good 300 yards from our location. I warn the officer to prepare himself.

Me (thinking): Cái đ*t...

Me: Sir, you better get ready, we have company up ahead, looks like invaders.

The police officer sees, widens his eyes, and gets ready his pistol out.

Police Officer #1 (IJ): Thanks for that! Now get moving outta the area!

Me (IJ): No problem. Will do.

In reality, I was lying.

Me (radio): Team, get ready to kick some a*s!

My Team (radio): Yes sir!

I then rushed back to where my team was standing and grabbed on my exo.

Me (cocking my IMR): We need to get the civilians outta the way before we can deal with them. Roger?

Downneck and Putri: Yes sir.

Me: Let's move! ĐI! (Go!)

We all start boost jumping towards the Roman-like invaders, who had probably had no idea that a force like us existed. As I jumped in mid air, I came crashing down in an exo slam.

Me: EXO SLAM! (I then slam and kill several Roman-like soldiers)

Roman-Like Soldiers: ARUGH! (dies)

Meanwhile, Downneck and Skippy were ordering the citizens to evacuate the area.

Downneck: PLEASE GET OUT OF THE AREA! THIS IS NOW A COMBAT ZONE!

Skippy: IF NOT, SEEK SHELTER!

All the while I used my IMR to shoot some of the invaders who were rushing us with swords. Guess the phrase "never bring a sword to a gunfight" is right.

Me: UMP! Toss a Threat in there!

UMP-9: Aye! (tosses a Threat Grenade)

She tosses a Threat Grenade, revealing the multitude of enemies.

Me: V*L CẢ L*N! NHIẾU THẾ! (SO MANY!)

My fireteam amps up the amount of firepower, but the Roman soldiers keep coming.

Me: How much of them is there?

Systems: About a total of 60,000.

Me: HOLY SH*T!

UMP-9: THAT MANY?!

Crim: HOW ARE WE SUPPOSED TO TAKE THEM DOWN?!

I start thinking of a plan.

Me: We'll do a tactical withdraw back to the Imperial Palace. We'll wait until Tokyo police or the Japanese military get here.

My team then nods.

Me: Alright. Hơn chướng, đi, đi! (Now, go, go!)

The team acknowledges and we start to boost jump our way to the Imperial Palace, all the way shooting the invaders who were behind us and in front of us, along with tossing Smart Grenades their way.

Minutes Earlier, US Navy delegation

Third Person POV:

In another side of Ginza, a delegation of US Navy officers were enjoying themselves (some of them are yanderes) after a long week of meetings with the Japanese.

Jean: Ah what a beautiful day. Hope that nothing happens.

Nimitz: Baka!

Grey: -_-

Jean (holding his face): You've got to be kidding me.

Windle: I don't know Admiral, why am I summoned here?

Jean: Apparently because brass wanted to have a Marine in the delegation.

Windle: Right......

In another corner, Alice and Justin were sitting together.

Alice: Justin.....

Justin: Alice.....

Alice: You're mine....

Justin: And you're mine....

Pro1: O-O

Downneck: What. The. Sh*t?

Crim: Yandere Commander and Captain? Fraternization? I suppose not! Totally!

Justin: You're the best Captain I can ask for.

Alice: And you're the best Commander ever!

They both hug. (A/N: They don't go lovey dovey yet)

Back to Jean and the rest of them, Lexi and Helen are chilling, although Lexi is getting a bot yandere over Helen.

Lexi (thinking): Hm, I wonder how I'll get Helen....to be my husband?

Pro1: -_-

A/N: The author has now died because of too much yandere writing. Also, F for Helen the cargo ship when UMP-9 comes as well.

F

Anyways back to the story.

Jean: Okay my delegation has a bunch of weird officers.

Windle: Don't look at me, I'm just a Marine who so happens to be in the Navy SEALs.

Jean: Which team?

Windle: 6. Also known as DEVGRU.

Jean: O-O....oh sh*t...

Windle: I'm also in Force Recon.

Jean then gets a bit of a stroke.

Jean: OH SH*T!!!

He then hides under the table where they were all meeting.

Jean (muttering): Please don't kill me, please don't kill me.

Windle just comes and taps on his shoulder.

Jean: AHHHHHHH!!!!

Windle: I'm not going to kill you. You outrank me remember?

Jean (panting): Right. Now. Time to enjoy ourse-

They were interrupted by some Roman-like invaders in the distance.

Jean: What the? (looks to everyone) Everyone, get out your weapons!

Since they were all in uniform and had gear on, even though the Japanese civilians were a bit uneasy, they took out all their weapons.

Jean: Ready yourselves! Cause this is gonna be a hot ride.

Windle casually gets out his M27 and puts on his Ops Core FAST Helmet, while the others put on their PASGT helmets.

Jean: It's showtime! Weapons free everyone!

Alice and Justin: Hell yeah! (both laughing)

Nimitz (looking back at Grey and cocking her M4A1 back): You better now let us down this time you baka Rear Admiral.

Grey (cocking his M4A1): I won't, I promise. I almost never done that you know.

Nimitz: SHUT UP YOU BAKA REAR ADMIRAL!

She throws an M9A1 his way, but Grey dodges.

Grey: Jesus you Tsundere. You're gonna kill us all. Damn.

Jean: Alright cut the chatter! Engage!

They all ran out of the meeting area to begin shooting down some of the Roman-like soldiers as all around them, civilians were screaming for their lives.

Jean: Windle!

Windle: Hm?

Jean: Help out the civilians! We can't let them get in the combat zone!

Windle: Already on it.

He uses the opportunity to direct the fleeing civilians to the Imperial Palace, to where the rest of the Japanese Police were waiting. Everyone else continued to engage the enemies.

Alice (with her TAC-50, sniping): If you dare touch Justin, you're all gonna die!

Justin (shooting his AR-15): And if you touch Alice, the same thing is gonna happen....to you!

Grey and the Tsun Nimitz provided suppressing fire from their M4A1s.

Grey: Die you cowards! DIE!

He killed some of the invaders as well.

Nimitz: Ah no fair! (pouts)

Grey: Fine, I'll let you in some of the kills as well.

Nimitz: Yay!

She also killed a few of the invaders as well. Until that is.

Grey: Watch out!

A soldier tried to stab Nimitz from behind, but an unknown man came in and punched the invader.

Unknown Man (Itami): Sup.

Grey: Who are you?

Unknown Man: Well I should start with you. You with the US Navy?

Grey: Yes. Rear Admiral Greyghost, pleasure to meet you.

Itami: First Lieutenant Yoji Itami, pleasure to meet you too.

Nimitz then shouted at them.

Nimitz: You bakas! What are you doing?! Shoot!

ItamI (pointing to Nimitz): She a Tsundere?

Grey (sighs): Yes. (gives Itami an M4A1) Here you go.

Itami: Thanks.

The both of them then kept shooting the invaders. Back to Jean, he had support from the Marine Windle, as he had evacuated the rest of the civilians into the Imperial Palace.

Jean: Just how many of them are there?! (shoots one of the invaders)

Windle: Must be at least a whole battalion per say.

Jean: Then fall back to the Imperial Palace!

Windle: Right. (he then gets on the radio) All officers, fall back to the Imperial Palace. Over.

Alice (radio): Roger.

Justin (radio): Read over.

Grey (radio): Moving along with Nimitz.

Lexi and Helen: Moving.

As with the Sentinel operators earlier, they fell back to the Imperial Palace, where reinforcements would be waiting.

Moments Later, Imperial Palace

Pro1's POV:

Once we reached the Imperial Palace, we find that the whole place was being secured by Riot Police and SWAT members.

Riot Police Officer (IJ) (to us): There will be some JGSDF units that will come assist us in about 10 minutes, for now though, we need to hold them off. Also, who are you with and what's with your gear?

Me (IJ): We're US Special Forces. Also, our gear is classified.

Riot Police Officer (IJ): I see.

Downneck: Sir! We got incoming!

Me: Weapons free!

I held up my IMR and started firing at the invaders, along with the riot police and from a distance, some others who looked to be wearing US Navy uniforms. After some time, we were approached by the US Navy group.

??? (Jean): Who are you?

Me: Americans.

??? (Jean): Which unit?

Me: American Special Forces.

??? (Jean): Army?

Me: No. Assortment of other branches.

??? (Jean): And what is with your gear? The US military doesn't have that. Unless....you're all imposters!

The US Navy group raises their weapons up, along with us.

Unknown man (Itami): Guys, guys, guys, stand down. You're all Americans. You should talk to each other, not try to kill each other.

??? (Jean): Fine.

We all lower your weapons.

??? (Jean): Now. Who are you?

Me: Captain MilitaryPro1, Sentinel Task Force.

??? (Jean): Sentinel Task Force?

Me: A multinational coalition task force created by the US military to deal with threats.

??? (Jean): What threats?

Me: You don't wanna know. Oh and by the way.

??? (Jean): What?

Me: We're from the future.

Everyone except for us Sentinel operators stood in shock.

??? (Helen): From the future?

??? (Grey): No freaking way!

??? (Alice): What is that metal thing strapped around your whole body?

Downneck: That is an exo suit my friend.

I look back for a second and UMP-9 starts to get yandere vibes again.

UMP-9 (yandere vibes and looking at Helen): I want him to be my husband.

Me: O-O

Let's just say it was weird. After we all introduced ourselves, we all decided it was good to have a break.

Windle: You're a Marine?

Me: Yep.

Windle: Fellow Devil Dog.

Me: Yes. Semper Fidelis.

Windle: Always loyal. Always faithful.

Me and Windle: OOHRAH!

While Windle and I were discussing Marine type of stuff, the others were chatting about themselves as outside, the JGSDF had arrived and dealt with the rest of the invaders.

Windle: This is only the beginning huh?

Me: Yeah.

Windle: But we will be prepared to take it back to them.

Me: Yes. We will.

A few weeks later

To try to explain this all up, a ceremony was held to commemorate the victims of the what is now called the "Battle of Ginza". The portal that appeared out of nowhere was now called the "Gate" (totally no provocations there ahem). The ceremony was also held to award all of us for our actions in Ginza. Itami was promoted to Captain, while for me, I was promoted to the rank of Major. Since there was no one from our world to promote us, we had to get several US Navy officers to promote us. The ceremony had soldiers from all the different nations, such as the US, Japan, Vietnam, the South American Federation, and some more. Along with this, all the flags of the different nations were held up as a sign of friendship.

3 months later (just before the Battle of Alnus Hill):

Me (thinking): It's about time..

Over the last 3 months, I was in charge of some of the planning that would go in this operation. For instance, I named Alnus Hill, Hill 001, for the sake of simplicity in logistics and a common Vietnamese habit. I was also made the US and Vietnamese military attache, along with being the US-Vietnamese senior advisor (even though my squad and the US Navy group were stlll allowed to be in command) because of the combat experience and training I had with both armies during my time in the Corps and QĐNDVN, and also being from the future as well. While during the time, I learned Japanese military formations, tactics, units, and command structure, and in the meantime got to know Itami better. I learned more about his otaku nature and since anime is usually associated with the younger people (like me, though I don't watch that much to be called an otaku or weeaboo), I called him "dân chơi". I then put on my normal Sentinel gear to head out with the squad and a formation of JGSDF soldiers.

As I got out, I see that the SDF soldiers, my team, and the US Navy members I met 3 months ago were already standing in line and formation, and Itami and I do the same. We then wait for the Prime Minister to speak his speech to the soldiers.

Prime Minister Motoi: Today is a new beginning, and all of you carry the hopes of the Japanese people. You have all waited for 3 months to start the campaign, and you will get your wishes. The Japanese Diet and military command have authorized immediate action as of today for all of you to be the first to enter the other side of the Gate. Remember that this will be for your country, so I expect respect and to follow the laws of war in our world. Now, would I like to welcome Major MilitaryPro1 on the stage?

I go up to meet the Prime Minister on the stage.

Prime Minister Motoi: I would like to thank you, Major MilitaryPro1, for serving alongside us as our military attache and senior advisor. I would also like to thank your team and the delegation of US Navy officers for the support in the battle.

Me: My pleasure, Prime Minister Motoi.

I salute him back and fall back in line for the briefing with Lieutenant General Hazama.

Lieutenant General Hazama: My name is Lieutenant General Hazama, and I will be your commanding officer during this campaign. Lets start the quick briefing. 4 weeks ago our scouts scanned the terrain that we will be entering shortly. We will take Hill 001 as our base of defense. Also, expect that we will be under fire from the enemy immediately when you disembark, since the enemy has positioned themselves close to the hill. We will be moving shortly, stand-by, and thank you.

The soldiers, Itami, the US Navy officers, and my Sentinel Team double check our equipment, with me checking my ECH helmet, my plate carrier GEN 3, my Assualt type exo suit, checked the ammo for my IMR (my IMR 3D prints ammo, so I should be fine), my MARPAT Woodland uniform, my radio, my backpack, and finally my IMR. All were in good order, with the SDF soldiers checking their Howa Type-64 rifles and their Type-74 tanks. Once everything is set and done, the general walked up to me and Windle and talked for a bit before we moved.

Lieutenant General Hazama: You ready Marines? I take that you're going with the first soldiers to enter the Gate?

Me: Yes sir. Our motto is "First to fight", so I am ready for what lies ahead.

Windle: I agree with what he said, sir.

Lieutenant General Hazama: Very well, good luck, God bless, and Semper Fidelis.

Me and Windle (saluting): Ooorah!

Lieutenant General Hazama: Take care. (he salutes to us)

I then yell back to everyone.

Me: Everyone, move out!

I go into the lightly armored vehicle with the rest of the SDF infantry going into their respective vehicles as well. Soon, the tanks started to move forward, followed by the mobile artillery, and then us grunts in the vehicles.

Me: Alright listen up! Once we move onto the hill and get out of our vehicles, we are to take the positions surrounding the hill. Stick with your fireteams and get yourselves into some of the foxholes that have already been dug beforehand, providing you with cover. RÕ CHƯA?! (UNDERSTOOD?!)

SDF soldiers: YES SIR!

Me: My team, you stick with me.

My Sentinel Team: Yes sir.

Me (turning back to everyone): I am very proud to be able to fight along with you. Now all of you stick to the plan that you were given before this operation, and you'll make it out fine. Cho tổ quốc! (For the nation!)

Everyone: YES SIR!

We were all ready for the battle ahead. Let's just hope it turns out okay though...

A/N: And that's the prologue! Hope you enjoyed this chapter!

Have a nice day!