I found it.

After all this time, I finally found it.

Ok, for those who may not know let me explain. When I first started here in FFN, I didn't know what kind of story to write. To fix it, I decided to see what other fanfics other authors had already made, and to be honest, they were great. But that all changed when the fire nation attacked… No? *Sigh* Fine. It all changed when I saw It. And by it I mean the ORIGINAL. Not the one I made, no, THE original "The Gunpla IS" fanfic that had properly introduced me to this world. But on one particular day… It vanished. But I didn't know why it vanished since my reading time was quiet slow due to school. And so I searched. And searched I did.

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But in the end, it didn't even matter. Because I never found it.

Well, until now that is. Thanks to a Reddit user going by the name throwthisaway11112 gave me my missing link. And with that, let me show you what gave me the inspiration to write.

DISCLAIMER: I don't own Gundam Build Fighters/Try, Infinite Stratos, hell, I don't own this fic. I'm just reposting.


Chapter 1: The Gundam IS


**Ayato Shopping Street, Japan**

Walking up the shopping arcade under the sun with pride and sense of accomplishment were two teens of 16 years old each. On the left was a girl by the name of Misa, a friendly and cheerful girl with brunette pigtails and attire that was a mixture of winter and summer clothing with short jean shorts, an orange shirt that has red writing of ' _Over The Rainbow'_ in reference to Gundam Unicorn. She also had a dark-ish green jacket with rolled up sleeves up to her elbows. In way of accessories she had a red watch on her right wrist and two red clips on the left side of her fringe in her hair.

Her Gunpla was named the Azalea Revive, a Gunpla with pink and white colors. The Azalea Revive's design had the Justice Gundam head, Gundam X chest, Tallgeese III arms, Rozen Zulu legs, Shenlong Gundam shield and Stark Jegan backpack with a few Builder Parts attached to it such as a Solar Reactor on the back.

The other teen was named Dart Silver, a Welshman who came across to Japan and moved to the area around Ayato Shopping Street to study abroad. This teen has a swimmer's build as he wore white Nike walking shoes, black pants with an elastic band and a plain black polo shirt with a sown-on white Welsh Feathers on the left chest. He has no accessories and he preferred not to have any. His facial features are sky blue eyes and dark brown hair that was curved to the left side with a little fringe covering his right eye a bit. His Gunpla is the Build Banshee, as a nod to the Gundam Build Fighters series. [Note that Gundam Breaker 3 is like the Gundam Build Fighters anime, but the latter is an anime show in the Gundam Breaker 3 universe.]

The Build Banshee is exactly the same in terms of design with the Unicorn 02, however the color scheme and the backpack are different. The Build Banshee is black in color rather than the usual dark blue and instead of the gold horns and flaps that open up during NT-D mode are now purple, with the eyes purple as well giving the Build Banshee a more malevolent look. The two Phenex Gundam's shields on the backpack are the same color as the rest of the Gundam. Like the Build Strike and Build Burning, the Build Banshee holds Phase Shift Armor parts on the elbows, knees and both sides in-between the neck. [ **AN:** Phase Shift Armor parts are the particle parts that glow blue/orange on the Build Strike or Burning when a unique ability is activated.]

Together Dart and Misa along with Robota, an SD Gundam AI were not only able to win the first World Gunpla Championship, but stopped the Ayato Shopping Street formerly with bad luck getting customers, be wrecked down to turn into a car park built by a rivaling shopping centre. With their championship victory people have flocked to the shopping district and the Ayato Shopping Street was now flourishing with customers. Gunpla fighters from all over Japan would visit the Gunpla Arcade to challenge the champions, and they wouldn't say no.

However, the Gunpla Arcade had a change of atmosphere than usual.

When Misa and Dart walked through the front door of the Gunpla Arcade, the first thing they heard were two kids complaining at something in a loud manner. It it sounded like they had their last straw and enough was enough before throwing the towel.

"This new enemy is too difficult!"

"Why even bother playing when you can't even beat it!"

"Run away with your tails between your legs and come back again when you have money to spend!" An old and croaky female voice was heard after the kid's complaints. The old woman was Illut Granny, the owner of the arcade.

The two kids angrily walked from the top area of the rectangular Gunpla Arcade and were about to march out the door for the final time. When they walked down the few short stairs they saw the two Gunpla World Champions by the door, looking puzzled. The kids brightened their moods as if a hero had come to save the day!

"Misa! Dart! Thank God you're here!"

"You have to avenge our pocket money!"

The two kids pleaded desperately.

"Avenge your pocket money?" Dart asked tilting his head, struck with confusion at the odd request. "What do you mean?"

"There is a new Gundam to fight, but he is impossibly strong!"

"No matter how many tries or strategies we use we can't touch him!"

Misa, being the friendly and caring girl she is, placed her hands on each other their heads with comfort, giving them a smile. "Don't worry, Dart and I will get this new Gundam."

"Hehe, you can try." Illut Granny challenged walking up to the two champions. "But the Gundam will win…when he gives me all your hard earned money!"

Dart placed his right hand on his chin, deep in thought. "It's strange, Misa."

"What is?" Misa turned to Dart removing her hands from the kid's hair.

"Illut Granny wasn't always this scheming or diabolical. Whatever this new Gundam is, it is making Illut go money-mad desperate for players to spend their money on attempt after attempt." Dart dropped his hand from his chin and look determined to his teammate. "Whatever this Gundam is, you and I will have to bring it down."

Misa nodded, determined as well. "Alright."

Misa and Dart walked up the few stairs to at the end of the lower section to the upper section, where to their left were three big spherical pods lined up across the wall. On the sides of each spherical pod was a number labeled 1, 2 and 3. The front of each one was opened like a sliding Gundam hatch, revealing a replica of a mobile suit cockpit inside. There was a chair in the centre of the black walled pod. It was currently black because it was unused, awaiting to be booted up to show a visual from the cockpit POV. Misa and Dart entered pod 1 and 2 respectively, sitting on the seat and fastening their seatbelt for motion safety, with the hatch sliding down on them and locking them in the closed pods.

**[Please place your Gunpla]** The AI requested. Like the Gundam Build Fighters anime, the Gunpla had to be scanned before it would be used in the system.

Misa and Dart clicked their Gunplas on a pedestal similar to the ones they use in Gundam Build Fighters next to the right armchair. The Gunplas were scanned and after they were, the black camera around Misa and Dark appeared. The visual came up as being in a launch bay the Archangel, Dominion or Minerva from Gundam SEED/Destiny would use.

The Azalea Revive and Build Banshee walked three steps forward before they bent their knees a little. From the POV of Misa and Dart it actually felt like being in a Gundam anime, feeling the footsteps the Gundams made against the floor and bent down.

"Build Banshee…"

"Azalea Revive…"

"Launching!" Dart and Misa said simultaneously as they felt the G-Force being thrown out of the launch bay by the catapult and were flung into deep space, where the only platform in sight was a circular metal platform up ahead. It seemed like it was torn from a space colony in the UC era. Far in the distance in front of the two was a space colony, damaged in some areas that were visible from the platform. The Build Banshee and Azalea Revive landed on the platform ready for anything, as Illut Granny and the two kids watched on with both excitement and worry through a TV screen on the wall in-between the three pods. It viewed in third person so they could watch all the Gundams fight at the same time, rather than looking through each one individually.

Silence befell the two, creating nervousness. "It's quiet," Dart commented.

His words did not last for long when the Gundam that sparked the trouble for the two kids flew down from above and came to a stop, appearing in front of Misa and Dart, levitating in the air and struck a hostile pose. It was not the same scale model as either Dart's or Misa's Gundams. This Gundam was enormous, reaching 5 fives the height of any Gundam. This PG (Perfect Grade) machine that appeared before Misa and Dart was the Scramble Gundam from the OVA of Gundam Build Fighters Try.

"Wha- PG type?!" Misa said stunned with the problem being a large scale model, something that inexperienced Gunpla fighters can take on by themselves, or as a team. The Scramble Gundam charged forward fast and when it got close to Misa and Dart, it swung its massive beam saber vertically at them. Misa and Dart swiped to the left and right respectively and evaded the attack.

"For a massive bastard like this one, it sure is fast." Dart commented as his Build Banshee landed on the ground to the left of the Scramble Gundam. The PG Gundam looked down to his left, setting his sights on the Banshee.

"Dart! Watch out!" Misa loudly warned watching the Scramble Gundam charged towards the Banshee and swung its beam saber, to a later miss when Dart flew up high into space. The Build Banshee aimed down, moving the two Phenex shields from the back to the front, while still stationed on their hoisters.

"Fire!" The Banshee fired two continuous beam blasts from the shields and aimed it at the Scramble Gundam. The attack hit, but it seemed the Scramble Gundam didn't feel it. "What?!"

"Hey! Over here!" Misa fired a Mega Beam Cannon shot from the Tallgeese III arms at the back of the Scramble Gundam to get its attention. The shot hit, but once again. It didn't get a reaction from the Scramble Gundam. The Scramble Gundam slowly jerked its head around and faced Misa. The Scramble Gundam's body turned around next so the Gundam was completely facing the Azalea Revive. The PG raised its arms in the air creating a large beam that looked like a sword in-between the arms and the Scramble Gundam struck it down in hopes to strike Misa down with quick reflexes.

Thankfully Misa got out of the way in time and flew to the left, reuniting with the Build Banshee currently flying over to the Azalea Revive.

"How can we beat him if our range attacks do nothing against his durability?" Wondered Misa with a concerned voice staring at the Scramble Gundam now turning to face the two paired up Gundams. "Those kids were right about this Gundam being tough to fight."

"This might be too soon, but we'll have to count on this ace up my sleeve…" Dart spoke as he took a deep breath. "Awaken… Build Banshee!" Dart shouted as his Gundam instantly transformed into NT-D Mode, showing the purple in the armor folds and glowed red, emitting a powerful aura. "Let's go!" The Build Banshee charged ahead with increased speed and a beam saber held in the right hand. As if in automatic reaction to the NT-D Mode, the Scramble Gundam surrounded itself with a purple aura, increasing its speed and power.

The Scramble Gundam raised its left fist in the air and pummeled it down on the floor directly underneath it to squash the Build Banshee; however the speeding Gundam was too fast and got underneath the Scramble Gundam as the Build Banshee rose itself up from the floor and up to the back piece of the Scramble Gundam. With Vibration Nails activated, the Build Banshee dug its nails deep into the Scramble Gundam's back, and quickly shoved its beam saber into the open cut. Electric sparks erupted from the back as the Scramble Gundam quickly swung back around and tried to hit the Build Banshee. Dart dodged the arm swing and kept dodging to keep the Scramble Gundam busy until Misa figured out what Dart had planned.

He made a weak point in the Scramble Gundam's back, leaving the Scramble Gundam open for a heavy attack.

'Got it, Dart!' Misa mentally said before she aimed her Mega Beam Cannon and two Large Beam Cannons on her back at the weak spot. At one all three cannons fired at the same time and directly hit the weak spot, causing the Scramble Gundam to become covered with sparks as it fell to one knee, defeated.

"Way to go Misa!" One of the two kids roared with cheer watching the tall Gundam they tried to defeat fall to its knee.

Back at the battle, the Build Banshee rendezvoused with the Azalea Revive. The two Gundam's nodded with victory, complimenting each other on a fight well fought. However, the fight was not over just yet. The Scramble Gundam tried to stand back up slowly, increasing the particles it dispersed per second. The particle radius increased outward.

"What's going on?" Misa asked looking at the struggling Gundam still attempting to get back to its feet. The overloading particles reached the two Gundam pilots, who assumed the particles wouldn't do anything. However the particles did something to the Build Banshee, and strangely enough got past the system and affected Dart too! The overloading particles were combining with the Awakening Mode the Build Banshee was still in.

Suddenly, Dart could see actual real life light blue particles floating in his pod, rising from the ground up like fireflies.

"What's happening?! Why can I see particles in my pod?!" Dart was starting to worry. He tried to eject from his pod, but the hatch wouldn't open, no matter what.

"Dart?"

Before Dart could get another word in, the particles immensely grew in numbers and in a short time, it fully enveloped the entire pod, creating a white blinding light within the interior. Back in the simulation, the Build Banshee started to glow pure white too, removing any detailed features of the Gunpla other than the Gunpla's shape Light blinded every screen of the battle, even in Misa's pod. When the light died down, the Build Banshee was no longer in the simulation, nor was the Scramble Gundam.

In Dart's pod…it was empty. Dart had vanished without a trace.

With the battle over, both pod's hatch opened up and Misa rushed out of hers in within a second and ran over to the pod on her right as fast as she could. "Dart!" Misa cried stopping before the pod. What she saw was nothing. Dart was gone. Not a single thing of him remained. Misa's heart started to pump rapidly as she got really concerned and looked all around the Gunpla Arcade to see if Dart was still here.

No sight of him…

"Dart…" Misa sorrowfully muttered showing an upset face.

**Infinite Stratos World, Japan Streets**

"Grr…what in the name of Zeon just happened?" Dart weakly asked himself starting to regain consciousness. The last thing he could remember is being covered with light blue particles in his pod before a blinding light affected his vision. As his eyes were readjusting to their normal vision, Dart could feel something…hard. First he was in a pod, but now he is lying on a piece of hard ground.

Dart lifted himself up as he continued to lie on the hard ground and looked around with returning vision. He saw he was in an alleyway.

"Why am I in an alleyway? Dart brought his left knee towards the front so he it could help him kneel up from a prone position. Nothing on his body was harmed or damaged, so that was some good news. Now with the other leg Dart pulled himself up and stood straight still getting his mind straight.

"Where am I, and where is my Build Banshee?" Dart asked himself possibly thinking of hundreds of questions at the same time. "I probably just fainted and now found myself in an alleyway. Yeah that must it," Dart said to himself thinking of a theory how he founded himself here. A least likely theory anyway…

To see where he currently up, he proceeded to walk normally without any injuries toward the entrance to the alleyway to the street, with passing civilians and cars. Behind them were buildings like a Japanese shopping district would have with cafés, clothe stores and the like. It seemed pretty normal. But the truth was, it wasn't.

When Dart stood in the sunlight of the street that wasn't that too busy, the buildings looked a bit more…

"Futuristic? Did I somehow manage to travel in time?" He pondered looking left and right, completely not looking suspicious at all.

"Hey! Watch where you're walking weakling!" A female voice spat like a thug. Dart looked left to see what was going on and it was a full grown female forcing a man to the front wall of a building a few stores away from where he stood. Dart looked around the spectators and saw if they were going to help at all, but it looked like every single man passing this public bullying was looking away surrenderingly walking past. Some women were smirking at this sight too, like it was good to see this happen.

"I'm sorry! I'll look out next time!" The man held against the wall surrendered immediately in a cowardly tone.

"Pfft, I can't believe you men were supposed to be manly. Now you're just reduced to feeble beings," the woman looked down on the man before she let go and strutted away with overconfidence and arrogance.

'What the fuck happened?' Dart thought with outrage. A man was bullied on the streets by a woman and no one did a thing to intervene. It was sickening! Dart ran towards the cowering man who had slid his back against down the wall and sat down. When Dart approached the sitting man, he crouched too on the man's side. "Are you okay?"

"Y-y-yeah," the business man jittered. "It's nothing new after all…"

"Nothing new? Does that mean street bullying has happened frequently?"

"Haven't you been around for the last six years?" This question made Dart's head tilt. "Women have dominated society for six years now with the IS."

IS? What is this man on about?

"I-I'm sorry. I have to go," the business man rushed to stand back up and sped walked away in the opposite direction of the female. It was obvious to avoid the bully, but Dart wasn't going to let that fear interfere in catching up to the bullying woman and get her explanation for the public threat.

Lucky for Dart the woman wasn't too far, so it took him at least 20 seconds to catch up to her.

"Hey you! What the hell is your problem threatening someone in public like that!?" Dart said loud and clear. The woman in question came to a halt, turned around a few seconds later and looked down on the teen condescendingly.

"Eh?" She gave Dart a dirty look.

"You heard me."

The passing people stopped and gazed to see the confrontation this stupid male has introduced himself to that would get him injured by the end of it. The males were praying for the male's safety, while the women giggled mockingly.

The woman who was being confronted leaned her head forward and turned it sideways so her left ear was at the front. She slowly raised her hand to behind her ear, making her look sarcastic or even more mocking than before. "Would you…repeat that?"

"With pleasure," he replied coldly. "What the hell is your problem-"

*Smash*

Dart was punched in the middle of the face with a hard metal object, sending him sliding against the ground a few metres. The women around Dart laughed condescendingly, viewing the same scene that makes them so much better than men. A woman with an IS hitting a weak man. Only a tank versus a bug would summarize this situation pretty well.

Dart leaned up and he saw this woman had a metal arm now over her right arm. Placing his hand over his broken nose dripping blood out the nostrils, Dart stood back up, mentally confused and physically enraged. "This….fucking…woman…" Dart said to himself gritting his teeth furiously. This woman continued to smirk at him, and it got Dart pissed off faster.

"You want to be put in your place, little boyo?" She asked insultingly. To her it was like talking to a baby.

"Punch him more!"

"Put him in his place! In the trash!

"How stupid can a man get?"

The woman surrounding the two joined in on the feminist fun, laughing away like a joke.

"I…won't forgive you!" Dart charged towards the woman, covering his nose with his left hand so he could keep his right fist handy. Dart's attempt failed again when the woman with the metal arm fully activated her IS (Infinite Stratos) and kicked Dart on the stomach, shortly falling to the ground with stomach pain too.

"Hahahaha!" The woman laughed loudly placing her right foot in the air above the grounded, humiliated and injured male. The men around him were desperate to help him, but if they did they would receive the same beating as this little teenager. "Time for you to get your hospital bill, boy!" The woman was about to stomp the grounded teen, but her foot was stopped by another piece of strong metal, or rather a claw.

"What?!" The woman exclaimed with shock, widening her eyes with disbelief. The grounded man by her feet activated his IS, black in color with purple trims around the entire IS. The IS had activated NT-D Mode. "This boy has a personal IS?!"

The woman chatted among themselves outrageously, asking themselves how on Earth this male has a personal IS. The males on the other hand gasped with joy, seeing another male with an IS to help bring balance to the Earth.

The new IS's claw grabbed the foot of the woman above it, and slowly stood up staring the feared IS female pilot right in the face. It was like having Death in front of you with purple eyes. When the new IS now stood on its feet while holding the other IS's foot, the new IS squeezed its Vibration Nails and was able to crush the left metal foot, to the horror of the female IS.

Not risking anymore damage to her IS, the female quickly deactivated her IS, releasing the claws's grip and ran away as fast as she could. The women felt their morale drop, as the males cheered. Maybe now the females would see their useless discrimination and stop their violence, male slavery and public beatings to bring the world back to normal, the way it was before a certain someone tore the world in two with the IS.

The new IS dropped its left hand down, deactivated its NT-D Mode and IS and returned back to normal, before Dart faded away into consciousness and collapsed to the ground, succumbing to his injuries and mental pain using NT-D Mode.

"Boy!" One of the men around Dart rushed to his aid and checked his pulse, relieved to know he's still kicking but unconscious. "Get an ambulance!"


**So how did you guys think of that first chapter? Any reviews would be really appreciated and welcomed. As I said this is a trial chapter. If you want more I'll make more chapters

**Judging by the reviews the first chapter got, you like this crossover and would like me to continue it, and so I shall. **

**CasualFictionWriter23 – I know it was strange and going overboard a bit too far to have one female in the streets possess an IS, however using that way to introduce IS to Dart was the first idea that clicked onto my mind so I just wrote it. I'll put a Build Banshee profile before I write this chapter so everyone has a general idea what the Build Banshee looks like both Gundam and IS forms along with its full arsenal.**

**New Universe Returns – Unfortunately I'm not familiar with the Kamen Rider universe, so you'll have to pass that suggestion to someone else. **

**Build Banshee Profile**

**Name:** Build Banshee (BB for short)

**Appearance:** The Build Banshee's design is based completely on the Unicorn 02 Gundam before it became the Banshee Norn: so the Head, Chest, Arms and Legs are the ones belonging to the Banshee. In placement of the Unicorn 02 Gundam's backpack there is a Phenex Gundam backpack instead, holding two Banshee/Unicorn shields upside-down. On the knees, elbows and on both sides of the neck on the body are Phase Shift Armor parts that come from the Build Burning Gundam. (The knee, arm and chest parts that glow orange when Sekai Kamiki uses an Ultimate Technique or Build Burst. If you still don't know what I mean look up _Gundam Breaker 3 Phase Shift Armor_ on Google Images and it should be in the second image that says _Barbatos Ignite._ Look at that custom build's legs and those are the parts I am talking about.)

**Infinite Stratos Appearance:** When the Build Banshee is in its Infinite Stratos form, the base suit is exactly the same as the Gundam form, however it is shrunk down to Infinite Stratos scale and the Gundam's face is gone so the Banshee's head looks like a soldier's helmet with the Banshee's horn. In the normal form and Dart's face is fully exposed, he has black armor reaching from his jawline by his ears that meets at the chin where it connects to the purple rectangular Gundam's chin.

On the backpack though, the two Phenex shields are levitated behind the back instead of on holders and they stay in place like any disconnected weaponry or armor from any IS. With the Armed Armor VN and BS, the Build Banshee IS does not carry them all the time so the Build Banshee IS has the Banshee Norn arms. These hands are replaced with Armed Armor VN or Armed Armor BS when the Build Banshee equips them, as if it was any IS weapon summoned for use.

In NT-D Mode, the Build Banshee IS gets back its Gundam's face when both halves slide to the middle from the side of the face.

**Color Scheme** : The entire Build Banshee from the head to the legs and to the shields on the back is black. The horn, the Gundam chin and armor fold are dark purple while the eyes are orange. This color scheme brings a more malevolent look. The Phase Shift Armor on his knees, elbows and body are dark purple too.

**Armaments**

**Armed Armor DE (x2) –** Two shields located on the back of the Build Banshee that can only be detached when it enters NT-Mode. When they have been detached they can become I-Field Shield Generators, reflecting any beams fired at them. At the very bottom of the DE Shields (not on them, but under it it) they can fire yellow Mega Beam Cannons at the enemy. When they are stationed out of NT-D Mode they can be brought up and aim to the front from behind the head.

**Armed Armor VN (x1)** – One of the three close combat weapons the Build Banshee possesses. Like the Banshee, it can be used to clobber enemies like a fist or act like a last-resort shield. It is used as a metal ripping claw when NT-Mode is activated.

**Armed Armor BS (x1)** – The standard long range Beam Smart gun that the banshee uses.

**Beam Tonfa (x2)** – Since the Build Banshee is no longer bound by the BS and VN, the Build Banshee IS can utilize its Beam Tonfas to flip Beam Sabers from his wrists forward and be used in close combat. Now with the IS Mode, they can be re-summed as Beam Sabers.

**Beam Magnum w/ MGaAP–** The standard 4-barrelled grenade launcher rifle that fires both metal-heating beam rounds and that fires four armor-piercing grenades that can be set to stick and detonate upon impact to the target.

**NT-D Mode** – While the Build Banshee is in NT-D mode, like in the Gundam Unicorn anime the NT-D allows Dart to maneuver his IS with his thoughts alone with increased speed and increased reaction time.