This is my first crossover fic. I love the Kamen Rider series, but Kamen Rider Gaim is a series that deserves my attention and I think should be called the darkest of the Heisei era. But that is just my opinion. I have also seen the Guilty Crown anime and am currently seeing it a second time. Here is how this fanfic is going to work:

- Shu's void ability will work a little differently. He will manifest both his own void and the void of others. However, when he is Gaim, he cannot use other people's voids. I don't wanna overpower him. It will be explained later on in the story as best I can

- Shu's character will be a mixture of his and Kouta's. You will find out later.

- There will only one kamen rider at first. I do not know if I will be using others or not.

- The Apocalypse virus will give rise to certain types of Inves when we get to the second half of the story.

- Hare will live to see the end. Inori will not. Sorry about that, but it is my decision. I have my reasons.

- Darryl will be featured a bit more. I see him as a rival to Shu.

I will explain more changes in later chapters, but not too much. Please do not forget to read and review.

The city of Tokyo. The capital city of Japan. At night, it is bright with so many lights from practically every building. The only part of the city that is dark are the ruined buildings, reminders of a horrific incident. A young high school student with brown hair stands outside from his apartment in the cool night with a holotablet. What he was doing was watching a J-Pop music video that featured a singing pink-haired girl that captivated his attention and, although he would not admit it, his heart. She was singing a song that was both melancholic and heartfelt.

xxxxxx

Inside the sewers under the city is the same pink-haired girl in clothes that belong to a J-Pop music video and a malfunctioning cloaking device. She runs from an unseen enemy. One of her comrades contacted her in her earpiece.

"Have you secured the key?"

"Yeah." she says, as she was following a little robot on wheels.

"Well done. I'll guide you out. Rendezvous in 30 seconds ."

The pink haired girl runs and runs and runs until her unseen enemy make the scene. It was a giant blue humanoid mech controlled via brainwaves from a pilot in a glass and metal pod in another location. It was called an Endlave, a weapon made for extermination. There were two, and they wanted this girl for some reason. The endlaves open fire on her and she tries to dodge their attacks as best she could. She ends up wounded but able to run. Her cloaking device works again. She escapes her pursuers at a bridge, but fears not for long. She gives to the little robot a vial to keep safe. The "key" that her comrade was talking about. One of the Endlaves finds and tries to kill her. The robot misses but has the girl on her sights. But then another Endlave appears. This one was green, a bit more clunkier, and had a cloaking device of its own. It was fighting off the Endlave that was going to kill the pink haired girl. The green Endlave spoke to the girl.

"I got you covered. Now go, and the key to Gai!"

The pink haired girl runs and the little robot speeds with her. The blue Endlave opens its silos to launch its missiles to kill the girl with. The resulting explosions blow both her and the little robot off the bridge and into the water.

xxxxxx

All this was going on while the brown haired high school student was standing in the night listening to Inori Yuzuriha, the pink haired girl with a singing voice that serenaded you with yearning love. As the song ended, he stood outside a little longer. Reaching into his pocket, he took out a toy. A toy that, for some reason, he would not let go. It was a lock with no keyhole. It resembled an orange and was labeled " LS-07." It was a lockseed. He did not remember where he knew what it was, nor did he remember who gave it to him. All he knew about that toy was that he never wanted to let of it.

The Seed of Change

Phase 01 - Outbreak; An Orange From the Void!?

xxxxxx

The year was 2039. A brown haired boy named Shu Ouma was riding the train to school. While he was listening to the same music video again from last night, he was approached by a classmate. Her name was Hare Menjou. She was the same age as Shu with wavy ponytails and an upbeat attitude.

"Rise and Shine, Shu. You look dead. Did you sleep well?"

Shu replied with little energy. "Eh... not exactly."

"Up all night in the old interwebs? or playing an RPG? " She looked at Shu's holo-tablet.

"Hey, what's that?"

Shu instantly switched windows.

"Just some flashcards."

Hare felt that he was being secretive for no reason. She looked through the train windows and saw a military tank as the train was moving. Shu saw this as well.

"More of them today, huh?"

"Didn't you hear? there was a terrorist bombing or something yesterday. Apparently, the attack happened in Ward 24."

As the train was moving, Shu saw the GHQ building, a building with unusual architecture. Shu then switched to another window on his holotablet that featured net idol personality, DJ Sagara. He was a man of medium build, in his early 30's, wore some hipster clothing and a colored bandana, and had silver short hair and glasses. Shu liked his show for some reason he could not pin down. All he knew has that he just liked the guy.

"WHASSUP TOKYO?! That's right. It's your good friend DJ Sagara here giving you the latest in news and music at your earliest pleasure. Okay, so you all heard. Major explosion in Ward 24. Officials at GHQ said it was terrorists at work. Man I tell you, people that raise HELL for no good reason make me sick"

Sagara holds a thermostat on his mouth for comedic effect. Various computer animations emphasize the sick part. This makes Shu laugh a little bit.

"All right y'all. Time for some music updates. Topping the music charts for this week is EGOIST. We all know who's in it." The screen cuts to the pink haired girl Shu saw on a J-Pop MV last night.

"I tell you right now. If I was still young, and I mean high school or even middle school young, I would fall in love in her and my ass wouldn't go to jail for it." Further computer animation feature big pulsing hearts on his eyes while behind old-school jail bars. This made Shu laugh even further.

"All right now. I'm signing off for a while. But we will still be on for all your music listening pleasures. This is DJ Sagara signing for the morning, telling you to be kick-ass any way you can."

xxxxxx

Shu made it to school. As Shu was sitting on his desk, Souta, one of his "friends" (as he would put it) called for him.

"Hey, Shu."

"Yeah, I know. I'm still not done with the video for the competition. Sorry."

"I'm... not here to bust your balls."

"Well, what else did you want?" Souta looked frustrated with Shu, but Shu replied nonchalantly,

"Don't worry. I'll have it finished by the deadline."

"Man, what's wrong with you? All I said was..."

Another one of Shu's "friends" named Yahiro grabbed Souta's arm just to get him to back off.

"Come on, Souta. leave him alone. He doesn't want to talk right now."

Hare heard the whole thing.

"Poor Souta. That was rude."

Shu said "It was? Cause I'm trying hard to be more socially perceptive."

Hare was a bit skeptical about Shu's efforts. "You're just too dense."

xxxxxx

As the day rolled by, Shu just did what every student in his school did. Sometimes he would wonder if he really was like every body else. But he also wanted to change. To be a different person. Someone other people could rely on. Shu thought that people respond positively to people like that.

'A person like that would have any anxieties to hide. He would be open to anything and not freak out about it.'

Shu wanted to be something like that so that he could stop pretending to be a friend and just be one, period. He then thought about the current state of his home, Japan. How it operates as a quasi-independent state, as his mother would put it. 10 years passed when Lost Christmas, the incident that gave rise to the Apocalypse virus, happened. As the country flew into chaos, the nation had no choice but to rely on foreign aid. It made Shu fell that he had do something.

xxxxxx

When it came lunchtime, Shu went off-campus, pass a blockade zone, and into his clubroom. An abandoned building almost covered in moss. As he went inside, he heard some singing. When he got further in, he would not believe what he was seeing. And yet, he dare not deny it. It was Inori Yuzuriha, the pink haired girl he saw on a MV last night. An underground celebrity, right in front of him. He did not know how to respond. He walked forward, just trying to think of something to say to her. Shu kicked an empty can and made a noise. This alerted Inori and the little robot on wheels that was with her. The robot immediately went on the offensive, just to protect Inori. It extended its arms, shot out a grappling hook, tied it to one of Shu's legs and made him fall on the ground. Shu got nervous as he saw Inori covering herself.

"I'm sorry. I wasn't trying to sneak up on you. What are you doing in here?"

Inori back up to the point she bumped into the desktop computer that was in the building by accident. It turned on and played a video. Shu spoke.

"Uh... I'm not quite done with it yet. It's just my hometown..."

"It's pretty." Inori spoke as she was impressed with Shu's apparent skills.

"Really?" The video was the only sound being made for a few seconds until Inori's stomach made a call for food.

"Uh... Do you want some of my rice?" Shu offered.

A few minutes passed as Inori recovered and was singing London Bridge. Shu went upstairs to check on her.

"So uh... You're Inori, aren't you? The lead singer for EGOIST?" Inori keeps on singing.

"So, what's a famous singer doing here? And how did you get so banged up?"

Inori responds. "I need to get this vial to Gai." Inori holds a complex string web and shows it to Shu.

"Here take this." Shu is bewildered as to why she was doing this. When he looked at the sting web on Inori's hands, memories flooded him. Memories that were both pleasant and scary. Like something he repressed a long time ago.

"What? What the hell... was that?"

Just then, a group of military men with guns come marching in. Leading them was a bald African man in a white coat. Shu was shocked. Inori jumped down to get away. The little robot tried to follow her, but was damaged. Inori tried to run, but was grabbed on the Arm by the African man.

"Not so fast." The soldiers all aimed their guns at her. One of the soldiers used the butt of his rifle to knock the girl unconscious. Shu continued to looked shocked and was frozen in fear of what was happening. The African man noticed Shu and spoke to him.

"Are you a student?"

"Yes sir. I am. I don't know of you noticed, but that that girl was hurt bad."

"This woman is a criminal. If you plan on protecting her, then we can purge you as a accomplice." Shu reacted with fear and fell to the floor.

"What are the results of the background test?"

One of the soldiers replied "We have confirmed that she is a member of Funeral Parlor in Roppongi, Major." The African major then kicked her.

"Worthless terrorist scum. Bring her in"

The soldiers collected her and left the abandoned building. Shu laid on the floor in shame that he could not gather the courage to protect Inori. The little robot made a beeping noise that got Shu's notice. It displayed a holographic map into the ruined ghettos of Tokyo. Shu remembered that Inori was trying to deliver something to a person named Gai. Shu made a choice, one that most people would find reckless. He went into the ruined ghettos to the destination on the map, hoping it would help him rescue Inori. He walked into the sewers, carrying the little robot, and hoped that wherever he was going, it would redeem him.

xxxxxx

Meanwhile, at GHQ headquarters, the powers that be discussed the ongoing situation.

"I have just been given word that you felt the need to dispatch a squadron to Roppongi."

"With all due respect, I considered to be a necessary action."

"This could mean that unnecessary violence will take place. I cannot allow it if it is not for an aid mission"

"Whatever you think best, sir."

"We still like to know the rationale behind this decision of yours. How dangerous, exactly, is this void genome?"

"That is level 3A classified intelligence."

"Something you can't divulge even to GHQ's supreme commander?"

"Yes sir. However, there is no need to feel concerned. The antibodies under my command are currently searching for the void genome as we speak. They have even captured the culprit that was holding it"

xxxxxx

Out in the ruined streets, the antibodies covered the area. Inside of their command trailers, an interrogation was taking place. The antibody major was heading it.

"Still don't feel like talking, do ya? You do realize we can exterminate the infected without any warning? If you don't tell us where this 'genome' is right now, I will purge this neighborhood of every disease ridden resident with a sea of fire."

Inori stood silent with a blindfold as she felt the sharp side of the antibody major's knife on her skin, but the major made no attempt to cut her. Still being silent, the major withdrew his knife.

"Very well then. Just remember, this was your choice." The major went to the trailer's intercom and made the announcement to his troops.

"Attention all units. All area residents have been designated stage 4 infected. Engage proper protocol."

One of the soldiers approached the major.

"What do you want to do with the girl?"

"Keep her until the purge is over. Then dump the body."

xxxxxx

Night feel, and Shu stuck out like a sore thumb. He saw numerous people living in poverty. He arrived at the destination, but nobody was there. He waited for a while, but caught the attention of some thugs.

"Hey schoolboy. Whatcha got there?"

Shu was nervous.

"Hey, that thing work?"

"What thing?"

"The rice cooker you holding."

"Well, it does work, but it's not a rice cooker."

"Leave it"

Shu responded nervously, "But I can't do that."

One of the thugs punched him square in the jaw.

"Don't mess with me. Put it down and walk away."

"I can't. It doesn't belong to me. Somebody I know risked her life to keep it safe. It was only a little while, but I'm still not gonna let it go."

Suddenly, bright lights came on. Out of the light, a lone figure arrived. Nobody could make it who it was. He spoke.

"Well look here. A group of corpses."

The thugs were confused, and one of them spoke out and said,

"The hell you talking about? What corpses?"

"I'm afraid gentlemen that you're in a situation that you can only die your way out of."

The figure in the light stepped forward and Shu got a good look at the person that was talking to the thugs. He looked older than Shu, had blond hair, grey eyes, and a commanding presence. He looked at the leading thug straight in the eye.

"You were pretty much dead men the moment you approached this schoolboy."

One of the thugs in a hoodie recognized the blonde person.

"Hey, isn't that Gai?"

"Damn"

Shu instantly recognized the name, and remembered that he was the person Inori had to meet.

"You got some balls, pretty boy." said the leading thug as he pulled out a knife. But Gai dodged it as he grabbed his arm and karate flipped him into the wet ground. Another thug tried to attack him, but Gai punched him in the face and made him bleed. A third thug tried to do the same thing, but Gai kicked him in the face.

"Holy shit, it really is him."

Gai proceeded to kick their asses as Shu watched in astonishment. The thugs ran in terror of this man who can take more than 5 men at a time. Shu turned his head at the thugs who were running away, then he saw a young black haired girl with a metallic headpiece that almost looked like cat ears. Shu said to the girl

"I'm not with them."

"Then give it back."

Shu assumed she was talking about the little robot he was carrying. As the black hair girl grabbed it and was leaving, he saw Gai as if he wanted to talked.

"You're Shu Ouma?"

"Yeah." Gai approached him.

"Last time I checked, there should have been a girl with that."

Shu was speechless as to explain why.

"You abandoned her." Gai said in a harsh tone.

Shu snapped back. "WELL I DIDN'T WANT TO!"

Gai had a surprised look on his face. He did not expect this outburst out of the kid that was in front of him. All of a sudden, explosions took place and alerted Gai and his band of fighters. One of Gai's lookouts alerted the others.

"Heads up. One of the GHQ's whitecoats just launch a full-scale attack."

Out in the fire ridden streets, people were running in fear for their lives as the antibodies continued in their campaign of state sanctioned genocide. One of Gai's fighters voiced his outrage at what was going on.

"Bastards. They're opening fire on anybody that moves."

Gai approached the black haired girl on her computer.

"Tsugumi, updates on our units."

"Just came online." Tsugumi was shocked at the data. "Incoming enemy."

The enemy Endlave was approaching on their location, but the green Endlave from the Ward 24 bridge crushed the enemy Endlave. It spoke with a teenage girl's voice.

"Idiot! You're in the way."

Gai told Shu to run.

"Make sure nobody gets that vial. Treat it like it matters to you."

Shu took that command to heart, and ran from the ensuing battlefield.

xxxxxx

Everywhere Shu could see was fire and destruction. He wondered if that person, Gai, really trusted him. As the fighting raged on in the ruined neighborhood, the green Endlave contacted one of her comrades. The green Endlave was piloted by a red haired teenager.

"How many targets?"

Tsugumi responds, "It's too much. I can't get a count."

"Keep it together."

the green Endlave crashed into one of the enemy units. It then proceeded to fire its missiles.

"Back it up, pal."

Each of the green Endlave's missiles missed the target, but one of them hit the ground near the command trailer of the antibodies and caused it to flip on its side violently. The people inside were knocked unconscious, except for Inori, who survive and took the opportunity to escape. While Inori was escaping from her captors, Shu coincidentally found where Inori was captured but was facing two enemy endlaves ready to kill her. Mustering up all his courage, Shu braved himself into danger just to save her life.

"Inori!"

Shu compelled himself to do something that he would never expect himself to do. Inori looked back to see Shu come to help her. But the enemy Endlave was ready to perform its task of extermination. As Shu charged, an unpredictable thing happened. The vial that contained the void genome started to glow. As Shu grabbed Inori out of danger, the Endlave shoots at both of them. By sheer luck and adrenaline, the Endlave missed. Shu ran as fast as he can, carrying Inori out of danger. The Endlave pursued, but lost them in the smoke and fire. As Shu and Inori relaxed in an alleyway for a moment, the vial broke and everything went white.

xxxxxx

When Shu opened his eyes, he and Inori were in some sort of space in an sphere surrounded by crystal-like streams of energy that acted like water. The crystal streams then attached themselves into Shu. Shu was more confused than before.

"What is this?" Shu heard a voice speaking to him.

"Take it."

"What? Who is it?"

"Take this power and make it your own "

"What power? What are you talking about?"

"Didn't you wish that you can change? To be better that before? To be different than the way you are right now? Well, here it is. Take the power that lies within your heart. "

Shu, taken aback at how this voice knows his deepest desires, wanted to take up this offer.

"But how do I..."

"Imagine a mirror reflecting yourself. On the mirror's reflection of yourself is a glowing circle on your chest. Now imagine nothing else on that mirror but the glowing circle that was on the chest of your reflection on the mirror. Reach inside the glowing circle on the mirror and take it. What is inside your heart is only half your power. The other half is inside your pocket."

Shu felt something inside one of his side pockets being levitated out. It then floated right in front of him. Shu saw his toy lockseed as a clue as to what the voice was talking about.

"The rest is up to you, Shu Ouma."

"Wait. Aren't you going to help me?"

"This is your story. Not mine."

Everything went white again.

xxxxxx

When Shu open his eyes, he saw himself in the same alleyway he went to escape the Endlave. Inori was there with him. Unfortunately, the same Endlave they escaped from came back and found them. Inori ran fast just so that Shu could escape.

"Inori no!"

But Inori ran and the enemy Endlave went after her. As Shu was going to go after her, he then remembered what happened a few moments ago. And so, Shu did what the voice from that moment told him to do. Shu imagined a mirror that held a reflection of him. On that reflection was the glowing circle on his chest. He then erased the reflection of himself on the mirror, but the glowing circle that was on the chest of his reflection remained. Shu reached inside and pulled out a rather big belt buckle. However this was not an ordinary belt buckle. It was a kind of belt that you would see on a tokusatsu superhero. It was black with a space on the center that you could attach something to. Shu looked at his toy lockseed and figured that is the other half of his power. It also had a knife-like object attached to it. Like it could slice. Looking further was a black rectangular plate that was blank. All this was becoming familiar to Shu; like it was something out of his childhood. Shu then knew by instinct what this belt was called, and what he was going to do next. He put the belt on his waist, the black rectangular plate glowing becoming a faceplate that showed the face of a masked warrior. But, before he attached his lockseed, Shu grabbed a nearby rock, threw it at the Endlave chasing Inori, and got is attention. The pilot of the Endlave tried to see Shu, but his machine was having interference of some sort because he could not see Shu's face. Shu faced the Endlave with Inori watching from afar. The green Endlave was searching for Inori, saw her watching Shu. The red haired pilot wondered,

"What is that guy doing right now? Does he want to die?"

With a loud voice, Shu yelled,

"HENSHIN!"

"ORANGE!" the lockseed said as it opened. The crystal streams appeared again, forming a metallic orange.

Shu then performed a pose and placed the lockseed on the empty space on the belt.

"LOCK-ON! "

Then, some sort of Japanese samurai-era music with a techno beat started to play. The people that were witnessing this both were this was happening and afar via surveillance systems were waiting to see what would happen next. Shu then used the knife-like object on his belt like he was slicing fruit.

"SOIYA! ORANGE ARMS! HANAMICHI ON STAGE! "

The lock opened and the metallic orange descended onto Shu's head and a kind of blue latex suit formed around his body. A katana also appeared on Shu's side as his default weapon. The metallic orange unfolded to form samurai armor. On Shu's right was a sword that resembled an orange slice. As all this was going on, a rush of various images flooded Shu's mind until the last image that slowed was a girl with a darker shade of pink in a red coat in a snowy city.

Shu glowed with an aura of power that was seen by leaders on both sides of the conflict. They saw this as a sign of what is to come.

"What's happening? What's going on? Why am I..."

Shu regained his senses as he saw an enemy Endlave fire its missiles.

"Inori!"

Shu reacted by covering Inori with his armored body. He felt impact but no damage. The enemy Endlave charged forward. Shu attached the rear ends of both his swords to make a bladed staff. Shu then took off the lockseed on his belt...

"LOCK-OFF."

and put it on his bladed staff.

"LOCK-ON! 1, 10, 100, 1000 "

Shu then shot off energy slices from his daidaimaru, his orange peel sword, and the enemy Endlave was trapped in a flaming orange shaped sphere.

"ORANGE CHARGE! "

Shu then jumped in the air, and sliced the enemy Endlave that was trapped in half and exploded. Feeling exhausted, Shu was still reeling in as to what was happening. Taking another good look of himself on a nearby reflective surface, he saw what he had become. An armored warrior that had the potential to change the world. He had become Kamen Rider Gaim.

My first chapter. It took me a while to finish it. but it was worth it. Feel free to review it. I accept criticism as long it is constructive. Please fav.

Later.