Hi, this is CasualFictionWriter23 crossover between Gundam Unicorn and Infinite Stratos. After watching both the anime and OVA and reading Cosmic Compiler (now changed into Crossover Story Fanatic) fanfic titled Gundam 00: IS, I immediately thought about this. So, here I am.

I'm following the anime plot line of Infinite Stratos. However since this is a fanfic and a crossover one, except the deviation from the canon events in later chapters.

Well then, enjoy ;)

Chapter 1: The Day Where The Unicorn Vanished

Gundam…

The name for a Mobile Suit known as the White Devil, a powerful weapon that brought down many Zeon forces during the One Year War. A white Mobile Suit which surpassed any other Mobile Suit, one that had seen and destroyed more Mobile weapons in the battlefield whether in space or Earth than the others could ever imagine. Even generations later, that term is still used for the Mobile Suits with usually white color, a red chin, multi sensor eyes, V shaped fins, and obviously its above average power compared with standard suits.

But… was Gundam simply a battle machine doll built for killing those who dared to oppose it? No one could truly answer that as some people thought that Gundam was a savior for Earth's humanity from spacenoids, while the others thought that Gundam was a merciless white monster who had stolen the spacenoids' freedom from Earth's political government.

Through the various generations of the Gundams, starting from the RX-78, Zeta Gundam, Double Zeta, and Nu, the Gundam pilots had seen how war could change people's perspectives about the factions that had participated or been involved in it. Some people still judged that those who were part of Zeon were the evil ones, trying to wipe out humanity by dropping a space colony in the first place, that they deserved to be punished, but some of them also blamed the corrupt Earth government for oppressing those who lived in space colonies by enforcing the Earth's iron fist upon them.

Putting that aside, it seemed that the universe also had a weird sense of humor as the Gundam pilots who had piloted their respective Gundams in the past found them in such a position by accident or through sheer dumb luck.

If a Gundam could have its own mind and speak like a normal human, what would it say about this kind of situation?

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Universal Century 0096 - Earth's Stratosphere

60 kilometers above the Earth's surface, a dark green colored Neo Zeon freighter transport ship Garencieres could be seen being pushed by two Geara Zulu Mobile Suits and a white Mobile Suit with a single horn on its head from behind. Inside the bridge which consisted of two crew members: one captain, and one passenger, everyone worriedly watched the ship that was about to leave the Earth's atmosphere in order to rendezvous with the other ship which was none other than the Nahel Argama, a ship that had once been part of the AEUG, which had been re-commissioned as an Earth Federation battleship. In other words… the two ships were supposed to be bitter enemies.

However, the problem itself wasn't because of the Nahel Argama, rather it was because of Garencieres' current condition which had one of its booster engines malfunctioning after the dogfight with the ECOAS troops from a Garuda aircraft carrier. Even worse, their fuel supply wouldn't be enough for them to circle the Earth again until a certain brown haired teenager and some Sleeves pilots took the initiative to provide additional thrust with their Mobile Suits.

"Those three are really out of their minds…" the captain, Zinnerman, commented before turning to one of his wingmen, "Flaste! Will it work?"

"We're climbing, but…" Flaste replied with a still anxious look on his face as he looked at the monitor, "We still don't have enough power to regain proper trajectory! Hmm..!?" Noticing the incoming signal, the wingman then turned to Zinnerman, "Sir! The Nahel Argama has already fired the tether cable to us!"

Zinnerman gritted his teeth and punched his armrest in anger, "Dammit! Our altitude is still too low! How are we going to make it!?"

"Wait Zinnerman!" The girl beside Zinnerman, Audrey Burne, called out to the captain while trying to calm down his anxiousness as she pointed at the monitor which showed the top deck of the ship, "Look!"

Above the top of Garencieres, the horned Mobile Suit which had left its position grabbed the tether hook with both hands and began transforming itself as it boosted upward. The Mobile Suit's external frame started to separate, revealing the glowing components beneath, and the horn itself suddenly split out into two, making a V shaped antenna, and its face began to change into that of a traditional Gundam. Having fully activated the NT-D mode, the pilot then brought up the Garencieres higher with its additional thrusters from its new form.

"Come on Unicorn…" the pilot, Banagher Links muttered as he kept pulling the tether hook with his Unicorn Gundam, "You can do this… I know you can."

As the tether cable from Nahel Argama finally came into sight, the Gundam released let its right arm from the hook and grabbed the cable. However every action always came with its consequences as the Gundam now was struggling between connecting the cable with the hook and getting itself torn apart from the heavy forces of the Earth's gravity and the Nahel Argama.

"Hnnnggghhhh….. rrnnnnnnggghh!" Banagher tried to resist the pain throughout his body from the psycoframe cockpit as he kept trying to connect the tether.

"This is no good! Your suit will be ripped apart!" Zinnerman warned from his seat at the sight.

"Banagher!" Audrey cried out his name out in fear, hoping that the brown haired boy wouldn't do anything reckless that could cost him his life.

Inside the Unicorn cockpit, Banagher could only grit his teeth as he kept maintaining his position. Cold sweat then began to run across his face within his helmet as he started to feel exhausted over the situation that he was in now. 'Dammit! Is this as far as I can go!?' He desperately thought as he began to close his eyes in fear, 'And yet… we've come this far…'

(Psycho-Field 2nd half- Gundam Unicorn) At the brink of despair, suddenly Banagher could feel a warm sensation as if someone was holding his shoulders. Opening his eyes slowly, the boy could swear that he saw the images of two people giving him reassuring smiles on their faces as if they wanted to say 'everything will be okay.' They were none other than the ECOAS commander Daguza Mackle who was killed by Full Frontal in the ruins of Laplace space colony, and the Sleeves member Gilboa Sant who had been accidentally shot down by Banagher's beam magnum when he intended to shoot Frontal's Sinanju for killing Daguza.

"Commander Daguza… and Mr. Gilboa…" Banagher muttered, looking at his right and left before their faces slowly faded away. Realization then struck him as his expression eased up.

'That's right... I can't give up yet. Especially not when everyone is depending on me!' Finally regaining his composure from seeing their spirits, Banagher then closed his eyes again and began to focus his concentration throughout the psycoframe cockpit as the monitor showed the NT-D text turning from a red color into green. Responding to the pilot's increasing willpower, the suit's inner frame then began to change its color from pinkish red to light green while emitting a yellowish green aura from its whole body. The light slowly began to cover the Garencieres and the tether cable all the way up to the Nahel Argama itself.

Everyone from both the Nahel Argama and the Garencieres watched in awe and astonishment as they saw the same light that pulled Axis away from the Earth three years ago. Even Banagher was completely speechless as he saw the 'miraculous light that had saved humanity on Earth' coming out from his Mobile Suit's psycoframe.

...

Down below the clouds above the sea's surface, inside the flagship of the Earth Federation's Londo Bell task force, the Ra-Cailum, Captain Bright Noa watched in satisfaction at the light displayed on the monitor as he slowly leaned back in his seat.

"See? I knew that boy could be trusted, Amuro…" the captain mentally spoke to his departed friend and comrade before taking a deep breath and looking up at the monitor again with his hands intertwined, "I wish you could be here and see this though…" (End of Psycho-Field)

"Captain Bright! Something strange is happening up there!" The operator called as he turned his head toward the captain, "The light! It's getting bigger!"

"What do you mean by that?" Bright then looked at the monitor again, and this time his eyes widened in surprise as he saw the aura coming from the Unicorn Gundam suddenly became larger… larger… and larger…

'It can't be…!' thought Bright, fearing that the same incident that happened to Amuro would happen again to Banagher as he watched the psycoframe's light become so intense that it totally hid the white Mobile Suit's presence from the ship.

…

Inside the Unicorn's cockpit, Banagher couldn't see anything clearly as all of his surroundings were obscured by the thick aura emanating from his Mobile Suit. Having no idea about what was happening; Banagher jumped out from his pilot seat and began to take a look closer at the panoramic monitor.

"What's going on here?" Worried and puzzled with how the situation had developed, the brown haired boy then turned around to see the view behind him only to see the same green aura until an idea came into his mind.

'That's right, the communication device!' As Banagher returned back to his seat, he started to try to contact either the Nahel Argama or the Garencieres. But instead of getting an answer, the device only let out a harsh buzzing sound no matter how many times he tried. "Come on… please work…" He pleaded as he kept trying to initiate contact but failed. Seeing that he couldn't get any signals at all, Banagher finally gave up and lowered his head in desperation until suddenly… a brighter purplish-blue light appeared right in front of him or rather his Gundam which caught his attention.

"What… what is that light?" The brown haired boy wondered while looking at the strange light, "And why does it feel so… very different?"

Suddenly the Unicorn's cockpit blinked several times while displaying a red '!' mark. Shocked with the sudden warning, Banagher then looked around his panoramic monitor which started to give red dialogue boxes everywhere which read:

WARNING! AN UNKNOWN ENTITY HAS BEEN DETECTED! EXERCISE EXTREME CAUTION!

"What!?" Banagher then immediately moved the control lever to escape from the strange light… only to have his Gundam's thruster output suddenly cut off with the screen on his cockpit saying 'FUEL EMPTY!'

"Argh! Why now!?" Frustrated with how fate seemed like to toy with him, Banagher then looked up at the strange light which now slowly became larger and brighter than before, strong enough that he had to shield his eyes from it.

"W-what the hell is going on here!?" Banagher asked to himself as he helplessly watched the light became so bright that it blinded his vision, as though it wanted to consume him and his Gundam.

In the state of panic and helplessness, the Unicorn pilot could only shield his eyes firmly as everything around then became nothing but pure white that he felt dizzy from the intense light. In desperate attempt, he even tried screaming for help, hoping that a miracle would come and save him. However, he couldn't even hear his voice anymore…

Then suddenly, everything turned dark and…

*THUD!*

The body of the young Gundam pilot fell and now slumped in the seat, unconscious from whatever that took away his consciousness…

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Meanwhile… in a specialized facility in an alternate universe…

The interior of the room appeared to be some kind of command room, which was operated by a green haired woman with glasses. She was sitting in front of the monitors that showed the surrounding areas of the island. It was nighttime and the sky was raining hard as the sound of falling water and sometimes thunder could be heard clearly throughout the room despite the building's sturdy walls.

"(Sigh) the weather sure is really bad, isn't it?" The woman asked her friend who was making a glass of hot coffee on the nearby tray. The other woman was quite different from the green haired one. She had long black hair which was tied into a ponytail. Her clothing consisted of a white shirt with a green tie underneath her black overcoat and a black skirt along with a pair of stockings and black high heels giving her the impression of a businesswoman or a profession similar to it.

"Sure is…" She replied before taking a sip from her coffee and walking to her side, "How long do you think this will last, Yamada?"

The woman, Maya Yamada, thought for a moment before replying, "Hmmm… I'm not sure, although I hope it'll be better again by tomorrow." She then brought up another subject as she faced the black haired woman, "By the way, do you think it was really a good idea to pair up Orimura and Shinonono as roommates, Orimura-sensei?"

"As if I would let my stupid brother to share a room with a complete stranger." The woman, Chifuyu Orimura replied as she took another sip and continued, "Besides, Shinonono knows him better as she was his childhood friend. Being the only guy in all-girls school surely has made him very nervous."

Upon hearing her answer Maya gave her a tender smile, "You really care about your brother, don't you?"

"Got a problem with that?" Chifuyu asked back, giving Maya her usual stern look which startled Maya a bit as she looked back at the monitor.

"Err… n-nothing at all. Huh?!" Noticing the incoming signal, the green haired woman's face turned serious as she turned again to Chifuyu, "Ma'am! There's something coming from above the academy!"

Chifuyu arched her eyebrow at this, "An IS?"

"It appears to be!" Maya replied while typing away at her keyboard in an attempt to get more information, "The target seems to be moving… no, falling towards the IS arena!"

"Falling? What do you mean?"

"Here, take a look!" Yamada then swiveled one of her monitors which showed a white armored IS falling in head-first while heading right toward the empty arena field.

Without wasting any time, Chifuyu immediately put her coffee back on the tray and spoke in a tone of authority, "Have three of the student council members get in their IS at once! I'll tag along to ensure everything is okay!"

"Yes, Orimura-sensei!"

...

Banagher's POV

How long had he been passed out? Ever since he was consumed by the strange light inside the psycoframe aura, he couldn't remember anything aside from the fact that he was falling… falling… and falling until he finally hit the ground. But how did he even survive from falling at that height in the first place? Feeling too weak as he couldn't even feel his body anymore, Banagher could hear the sound of the rain pattering all over his body and the incoming footsteps.

'W-who's there..?' Banagher slowly opened his eyes, but he couldn't see anything clearly due to the rainwater had blurred his vision. However, he could identify that at least there were four people approaching him in some kind of strange mechanical suits, 'These people… who are they…?'

As the four began to circle around him, one of them crouched down and looked at him closer while the others were chattering. Banagher wasn't sure about what they were talking about due of the sound of the heavy rain. Banagher could barely make out anything that they were saying…

"…kind of IS… this?"

"The pilot… a… boy?"

"Another… piloting… IS?!"

"…standing like idiots!? Bring… to infirmary at once!" the one who appeared to be their leader told them in a commanding tone which made the other three immediately help her to carry the brown haired boy with their mechanical suits.

'Just… what is happening here…?' Unable to process everything that was happening, Banagher slowly closed his eyes as once again his consciousness began to leave him and the world began to turn black for him.

'Audrey… everyone…'

(Re: I Am - Aimer - Gundam Unicorn)

If you wonder how Banagher's Infinite Stratos looks, just imagine a Unicorn Gundam cosplay done by Clive Lee at AFA Singapore 2012 or Fallout Power Armor. And by the way, a new mod pack for Fallout 4 Power Armors is out where you can play as 08th MS Team. Check out nexusmods for more information.