Alright guy's depending on the reactions I get I'm going to try and write a triology.It's based on an rp(Rixku will know some of the story) which was based off a story I started when I was a kid. Anyway there will be three stories The darkside, the light side, and the twighlight side. I'm going to start with the darkside because it is my favorite one to remember hope you guys enjoy it.

Prologue

Rob Devereaux lived on earth where worlds are created biased on the ideas of humans (unknowingly though) was chosen by a primordial being (creator of the worlds) Infineon before his passing on( after a war with his twin Finitreon in which both are destroyed) choses a mortal to receive his power in form of a fragment of crystal called The Infias X. He told his people to that a child would one day be born (marked by a specific date told to only one Infinian Master Zion) to bear the power. However he prophesized that the boy would either use its power to save the worlds or destroy them (He also told that Master Zion that the choice was not the boys but lay in the hands of his closest friends) and the Infinians were not to interfere for if they did destruction would befall their race and hope would leave the universe.

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On the marked day Rob was born (the only child born on that day).Rob grew up to be a fierce boy with a slight arrogant complex he was mostly good nature he made a group of five friends. As instructed the Infinians froze time in Rob’s world and brought him to their planet to inherit the fragment from then on his 11th birthday. Against his masters orders Zion told Rob his closest friends had the potential to sway him to the darkside. Rob who had already decided to bear the responsibilty of the universe made a decision to drop his current friend in doing so sealed his doom. After training for a year on Planet X under Master Zion the greatest warrior in the universe Rob returns home.
Rob would go on defending his planet (for the activation of the Infias X triggered an opening between realms in which many villains and creatures escaped into his world.) occasionally the Infias X would transport him to another realm to complete a task, collect a power, or defend that world, the first world he visited was the realm of Kingdom Hearts where he received the power to wield Infinity keyblades.(Extensions of the all-powerful Infinity X-Blade) He then decide to call his alter ego Infinty- X.

Not long after he returned to his own world he befriended Mary Anne and Derrick (the two would become his best friends) as years would pass Rob would become a master swordsman and could defeat the biggest of threats with ease he eventually surpassed Zion in skill and power. He had also found a new set of friends which became as close as the old ones which included Sarah, Nicole, Nick, Jerry, Kyle (including Derrick and Mary Anne the latter who Rob had begun an intense relationship with) unbeknownst to Rob Finitreon from the clutches of death had orchestrated an event that would lead to his down fall.

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While on the Senior Trip to New York City (the day before graduation) Finitreon commands the villains of all worlds to invade New York. Led by the Xehanorts: Xemnas, Xehanort's heartless, Xehanort's ghost and Xehanort's snatcher (beings that seek the Infias X) a horde of villains, ghost, nobodies, heartless and snatchers attack the city. Rob manages to defeat all but the Xehanorts but is at the point of pure exhaustion. He then seemingly defeats them but they reveal they have suspended his friends (with the exception of Mary Anne was on a vacation and would not return from her trip untill graduation) high above the city as the Xehanorts fade back into their own world the spell suspending his friends is broken. As they begin to fall rob uses the last of his strength to duplicate himself and save them. As he fuses back together he collapses and transforms back into himself his secret revealed to the entire world.
Finitreon then fills the world an intense hatred for Rob (immune by only Mary Anne and his family the only one who already knew his secret) The next day Rob seeks comfort in his friends but is shunned by them shocked and hurt Rob runs home to see Mary Anne (also his neighbor) however her mother and father come out and call him a freak and tell him their daughter could never could love someone like him, confused and horrified Rob begins to lose sanity.
Later that night before the graduation ceremony Rob attempts to confront his friends one more time. Their anger intensifies and through that anger Finitreon is able to open a portal to a special fragment of the realm of darkness created by him. His friends, even his best friend Derrick (much to Rob’s surprise) then pushes him into the portal. As the portal closed Rob summoned a blade and carved an X on his cheek and swore upon his own blood vengeance.
As soon as the portal closed the pain began. The realm of darkness created by Finitreon was designed to forcefully push one to complete darkness through pain and suffering, only stopping for short lapses of time with nothing but a device that marked his time in the place. However Rob who had strong memories of Mary Anne and his family survived through sheer will. The pain was immense and constant shattering his faith upon this happening the fragment of the Infias X became of no use and shatters. This went on for years eventually the darkness began a new approach because his memories were so strong they could no longer be erased, so the darkness began to bury them by placing itself onto his heart in massive amounts bury all memories but those of revenge.
Now in almost complete darkness complete Rob realizes he has been in the realm for a thousand years but since his body is tied to the time of his world he has only aged 35 yrs. He then notices he has no way to escape his prison. Using the very darkness around him Rob re-forges the Infias X through his control of the darkness into the Finite zero and Finitreon appears to him in the form of a shadow heartless and hands him a blood red crown the base for an ancient artifact of myth and power the crown of blood. He also gives him the ingredients list needed to complete it. Once completed it would enable him to take over the entire universe. Dropping his human name, as well as his hero name Rob dubs himself Nega- X. He creates a dark floating castle and names it Void Castle. He then proceeds to travel for the first ingredient of the crown of blood(The light of a pure soul) in the realm he first visited as a child 35 years afterwards the realm of kingdom hearts. But first he had to revisit one place important.

Chapter 1

Bond of Brother,Hold Me Down.

He stepped out of the portal and gasped in surprise, in the exact spot he was standing right now, under his very feet, he had found himself standing in the very school and in the very spot that he had been cast into the realm of darkness all those years ago. An intense hatred coursed through his veins, he could feel the anger pulsing through body dying to escape. The hallway was dark not a soul to be found so he concluded that it was a weekend day. He walked down the hall it was sleeker and newer then when he walked the very same halls. The anger was still pulsing through him pinching and pulling at every fiber in his body. He stopped and peered out of a window "Not much has changed" he mused. It was at that moment the true impact of his situation sunk in. While it was true he had spent a thousand years in the realm of darkness because his body was tied to his own world's time it had only aged thirty-five years. He kept walking down the hall until he came across a giant frame. Inside was a class portrait of every graduating class in the history of the school he quickly located his class and there they were. All huddled together a smiling his closet friends, friends who had ensured that the one person who had always sought to protect them suffered for all eternity. One person stood out in particular his best friend Derrick the one he had thought would understand but turned out to be the who had shunned him the most. The anger was now throbbing through his body an aura of black energy surrounded his hand. They were all smiling despite the fact that they cast their best friend into oblivion, despite the fact that they went on to live normal lives while he had lost his to protect them, despite all he had given. Suddenly he punched the wall and it shattered the entire frame into dust while crumbling the wall into gravel. Anger pounding through his blood screaming for release, by now the dark energy surrounding his hand had engulfed his whole body and released through a giant burst of energy exploding through his body. The walls supporting the school around him collapsed as black flames began to engulf the remaining building. He then collapsed and clenched up the anger he thought to be coursing through his body he now recognized to be pain. It was a horrible pain beyond anything he had felt in the realm of darkness. He could hear sirens knowing that the fire department was surely on its way but he could take no notice, all he felt was blinding agony searing his body. Just as his skin had begun to sear from the very power of and that’s when he heard a voice " You are tied by an act of kindness you cannot enter your home world without suffering immeasurable pain leave this world, build your army, forge the crown of blood and power beyond what you crave will be yours." With the last of his dwindling strength he opened an Infinity Portal and crawled into it making it through the portal before passing out.
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He awoke in his throne room, he was no longer in pain and he could already feel his full strength returning. He lifted himself onto his throne and pondered what had happened. He could come up with no plausible reason for that to have happened. What act of kindness did he have ties to that kept him from entering his home world suddenly a searing pain tore through his head as he had a flashback.
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A young Rob was fishing on the beach next to him his best friend Derrick had reeled in a stick. Young Rob laughed "Shut up! At least I caught something" said Derrick "Whatever you say Derrick" Rob replied. "Hey Rob how come you don't call me by my last name like you do ......... (The vision blurs.) asked Derrick. "I only call people by their last name if I totally respect them and I respect.........(vision blurs again) " Hey Rob do you think me, you and ..............(vision blurs again) will always be friends."
Asked Derrick "Sure" Rob replied "In fact let’s make sure of it, let’s become blood brothers" Young Rob picked up a piece of glass and pricked the top of his finger, a stream of blood trickled out. "Now let me do you" said Rob. Derrick held out his finger and Rob pricked it with the glass. He then held the two wounds together for a couple seconds. "There now no matter how far apart or how mad at each other we get at each other we will always have a piece of each other to keep us from fighting." explained Rob. "Cool but there’s one problem my finger is starting to bleed real badly" said Derick. "That’s ok my mom makes me carry extra Band-Aids" joke Rob both of them break out in laughter.
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"So the bond of brothers is what keeps me from my goal !" He yelled as he awoken from his vision. He smashed his fist onto the arm of his throne, angry that a stupid act of humanity was holding him back. As quickly as he flared up he calmed himself. "No matter I will forge the crown of blood and force my way home if I have too" He hopped of his throne and began to pace another thing troubled him it appeared that his own home world had fought against him. If it was capable of causing such pain what other tricks might it have been capable of. “I need an army and generals if possible" he began planning it out in his head he needed a group that would be so blinded by their own lust for power that they would follow his every command, for he would tolerate nothing less than complete loyalty. “The Xehanorts" As he said aloud it made perfect sense but he would have to travel to the realm of kingdom hearts for Sora and Riku would have surely defeated them by now. He would need to travel far into the realm of darkness and find at least a fragment of them to revive them. He stepped towards the window to the castle and looked at the vast darkness then lifted a single hand summoned an Infinity Portal the biggest one he had ever used one that would lead him exactly where he needed to go. He made another motion with his hand and Void Castle moved torwards the portal making the first step towards a war that would span the universe over, a battle in which would ensure he was the last one standing.