This fanfic completely ignores 3D and most of the stuff that was published in the Ultimania magazine. I'm ignoring 3D as it turned the story from a hard to follow dumb and cheesy story into complete Shonen drivel which also marked the day that Tetsuya Nomura finally threw his hands up into the air and said: Fuck it! You guys think my story is stupid now!? Fine, have stupid plot twist after stupid plot twist! And I'm not using any of the info from the Ultimania magazines because I don't want to track down obscure shit and I really don't to as Kingdom Hearts runs on Shonen anime and JRPG logic as if they were laws of physics.
Oh and this story takes place eleven years after II and during a decade old war.
Organization XIII ARE Villains: Look, I know how some of you think that they just want hearts and that somehow they're good people. Don't read this fanfic because I'm going to portray them as evil and everyone in-universe will see them as evil due to their antics to obtain hearts in CoM, Days and II. And I don't care if you see them as good people. What comes to mind when I think about Organization XIII is Xaldin mind raping Beast (One of Sora's good friends) into believing that Belle doesn't love him to get a powerful Nobody out of him and then taking the Rose and kidnapping Belle as a last ditch effort. Or Luxord raiding and pillaging Port Royal to create more Heartless so Sora and any other Keyblade user will defeat said Heartless and power up their Kingdom Hearts. And let's not even get into how much of this stuff they did off-screen. Roxas, Namine and Axel/Lea also DO NOT have nice things to say about them.
The SI and his OC friends are the main characters: This is going to turn off a lot people from reading this fic and I completely understand why. You want to read about your favorite characters not some author playing hero with other characters that you'll probably not care about after you read it. I have good reasons like trying to avert the whole i haz a kyebled!11! I git 2 advanture wif sora!1!1 cliche that fucking plagues the self-insert fics in this fandom. Well that and the whole I got sucked into a video game! cliche but that one isn't exclusive to Kingdom Hearts. I need to get the next part out of the way...
Let me ask you a question, if you were a highly accomplished adventurer gearing up to save the world and were saved by someone who you didn't know, would you let them go on an adventure with you that will decide the fate of the world/s? No, you wouldn't. You'd thank said person, hell even give them a reward but you wouldn't let him go with you for several reasons. One, being you do not know them. And I know that sounds really redundant but I want to clarify why. First, how do you that they didn't get lucky in that fight? Or if they're working for the person who is trying to destroy the world be it a god or a normal mortal man and is trying betray you at the most opportune time or they have ulterior motives and will leave you hanging when you really need them. So, no you wouldn't.
And the reason why I went on this tangent is because whenever I read KH fan-fiction the authors seem to add a poorly thought OC to the plot for seemingly no reason. I know that Kingdom Hearts is a very optimistic series but when people just join for seemingly no reason at all several alarms just ring in my head because it's like the canon cast bringing a shady hitchhiker who looks like he'll try to mug you and steal your car on to their ship to fight monsters. So instead of just joining Sora and his friends because *insert reason here*, we'll be going to a military academy for two arcs which will go out of it's way to world build, go over how the self-insert and his OC friends will train, sprinkle cameo's from canon characters and have Final Fantasy characters from games other then VII, VIII, and X show up.
While we don't start off strong we quickly get ahead due to being in a war and unlike canon characters who learn everything at once due to being very balanced (Sora says hi.) or due to having their adventure by themselves (The BBS trio say hello as well.) we specialize in what we do. So if, say the self-insert gets training in martial arts, using weapons and armor then he'll become a top-notch front-line fighter. That's all he'll be able to do but he'll be REALLY good at it. Or a character who uses Black Magic (Offensive magic like Fire and Thunder. And status ailment spells like Sleep, Poison and Silence) that can rain magical death and destruction in the right and precise way.
Here are all the skill-sets of all the self-insert and OC's.
Male Monk/Warrior SI: Eventual mastery of two fantastical martial arts with general hand to hand fighting techniques based on Krav Maga and Muay Thai which are THE fighting styles if you want to fuck someone up, various weapons training, marksmanship skills with every type of gun and thanks to the supercomputer in his head, tech wizardry. He can't use magic at all and his resistance to magic is horrible. Also, because of his lack of magic he has to rely on items for healing if the party's main healers aren't there.
Female Black Mage and later Mystic Knight OC: Keyblade user, offensive magic mastery, rapier weapon training and Mystic Knight training (heavy armor training, binding complex spells like Ultima and Flare to weapons, endurance and strength training). Doesn't have a real answer to long range attacks like archery or guns. Also, thanks to her Keyblade which lets her basically be the best Black Mage ever extremely hampers her ability to learn and use White Magic (defensive magic, healing magic and light magic attacks like Protect, Cure and Dia) so she has to rely on items for healing if the main healers are gone.
Male White Mage and later Paladin OC: War-hammer weapon training, White Magic training, patching up wounds with a first aid kit if he's Silenced. Paladin training (heavy armor training, sword and shield training and binding light magic to weapons.) Before the Paladin training, he doesn't really have anything to offer when fighting non-Heartless/undead and is just better healing wounds anyways. Also doesn't have an answer to long-ranged attacks.
Male Ninja/Time Mage/Summoner hybrid OC: I know I'm giving this OC a crap ton of abilities but back in the old days, Summons were earned via buying them in shops but mostly defeating said summons in a battle. Can manipulate a person's individual time (spells like Stop, Haste and Slow) to buff up the party and debuff the enemy. Can also open up portals to get through secure buildings and teleport the party. With his ninja training he can sneak up and kill enemy soldiers before they even notice him, he can also throw weapons with stunning accuracy and use elemental (fire, thunder and water) scrolls though he has to write them before a fight. His main weakness is that he can't take a physical hit worth his salt. He can cast Regen which heals the target bit by bit over time but if the enemy is quick about it or he's Silenced, it won't matter so items are still better.
Female Bard OC: Keyblade user. Sound manipulation via literal magic music from her harp (firing 'notes' which hit like actual bullets, making air 'bombs', making wind vortexes, shattering the sound barrier. Can sing various ballads to either heavily de-buff the enemy or buff up the party but she can only sing one ballad at a time. Rapier training (so she can use her Keyblade more effectively). She can heal by playing certain songs on her harp or by singing but she has to stop singing/playing what ever song she's playing and buffs or de-buffs will end right there. And like the last OC, she can't take a hit at all.
Male Dark Knight OC: Keyblade user. Darkness user. Heavy armor and sword training. Uses Darkness in ways that typical darkness users don't even consider. Utterly immune to darkness's corrupting nature. Later learns more fighting techniques to round out his skills with a sword. His skilled use of darkness is both his greatest strength and weakness. He doesn't have an answer to light magic and that becomes his kryptonite. Unlike most people here, he later learns to use bows and Black Magic so he can have a ranged attack.
Male Alchemist OC: Master marksmanship with every type of firearm, mixing two or more items into another more powerful item. Is the only one that doesn't have an answer to close ranged combat in the group so he pairs up with melee oriented fighters of the group. Can make items in non-combat related situations only. Can pretty much MacGuyver any type of potions, cures and tonics if given enough time. Is just as fragile as a mage.
Female Paladin OC: Archery and Heavy Armor training, light magic and some healing magic. She later to learns to use a sword and shield during the time-skip, but is still dependent on her archery skills as her main form of attack.
Max: Goofy's kid! Unlike the usual weapons that he gets like two shield or a skateboard, he gets an actual weapon. Just what? You'll see... I'll be nice and even give you a hint: Since his father is always traveling with Sora and thus not around to train his son, Max had to get training from a certain dragon knight...
Robert Edward O. Speedwagon:
And I know this is very Final Fantasy but we're getting trained by people from a world that is a composite world of multiple versions of the same world from three spin off games and one main series Final Fantasy title so (at least I think) it makes sense.
Strategy is Key!: The most awful pun aside, since most of us specialize in one thing (temporarily) we'll have to plan and be more strategic then the canon characters will ever be. We'll be using teamwork in junction with just not fighting fair at all because we'll be good but not good enough like the canon cast where they don't have to not fight fair. And even after the time skip, we'll be using teamwork as there's only so much you can do by yourself.
Romance: All of the pairings are Canon x Canon and OC x OC. This would be the time I reference the Don't cross the streams! line from Ghostbusters but that would re- oh. Anyways, here are the pairings: Sora x Kairi x Riku as an OT3 (One True Threesome or a poly-amours relation between the three of them), Roxas x Namine, and all the canon pairings for the Disney movies.
As for the OC's, well... I'm just going to post the parings here.
Black Mage OC X White Mage OC
Monk/Warrior SI X Ninja/Time Mage/Summoner OC (Yes, that's right.)
Bard OC x Dark Knight OC
Paladin OC x Alchemist OC
And lastly, I can't vouch for the quality of writing for the prologue as I wrote it on the seat of my pants and it SHOWS. Hell, I didn't really have any idea other then parody. And then I realized that I only read 'Kingdom Hearts III' fan-fics. The self-insert just used a shit ton of weapons that I ripped off from an MMO that had nothing to do with this series, he had a shit ton of psychic powers and his characterization ever really went anywhere or never really suffered. Now? Well... You'll see...
I honestly brainstormed more then I wrote it. Half of the OC's outright didn't exist and the other half weren't planned at all other then being a person just caught between all the bull-crap that they get into because they're soldiers/adventurers. I'll have the prologue up soon.