Okay, I'm taking a little break from my two crossovers and I'm starting a fresh new one; it's another Sonic crossover, but this time, IT'S KINGDOM HEARTS!

I thought about this for a little while and I wanted to make it a reality! I will do the Legend of Signers chapter very soon, but for now enjoy this!

This is just an opening to get you excited, but hopefully, It will get better; I might not put Sora, Riku or Kairi in it, so if you like them and not a solo story of Sonic, then you can get out!

I don't own SEGA or Square Enix (Or Disney), I just own Roxas (My OC); please review and enjoy!

Opening

(Playing "Sanctuary" by Utada Hikaru)

It was sunset and a purple airplane is heading towards a floating island called Angel Island, home of the Master Emerald and Guardian named Knuckles; the pilot of this plane was a two-tailed fox named Tails and standing alongside him was a blue hedgehog named Sonic. The airplane named Tornado made a safe landing and Sonic sees Knuckles waving at him and Tails.

Sonic, Tails and Knuckles were sitting on the steps of the Temple, chatting; after when Knuckles was finished, he was blown away like sand on a beach when it was a windy day, then suddenly, the same happened to Tails. Sonic looked down a little bit, but he tucked his legs in and pushed his hands down and kicked forward; as he was kicking the scene disappeared like his friends did.

Sonic landed onto a marble flooring of Sky Sanctuary and started attacking robots that have egg shaped heads; he attacked them by using his spin dash on their heads. Once the robots were destroyed, he found a path that lead him towards a giant floating base that showed a moustache and a pair of glasses.

As he reached the end of the path, the scene changed to a city at night and helicopters started to appear; Sonic jumped up and grabbed the bottom rail of a helicopter, he rode for a little while until he saw a being made out of water. He let go of the rail and jumped safely down on the road where the water being was; he ran towards it and started to punch it, but everything he tried didn't work because it kept resurrecting itself.

After a while, the water creature sinked down a drain and the scene was once again changed to the same city but it was completed devastated and flooded. Sonic then saw a huge sea serpent creature and seven different coloured emeralds were spinning around him; the emeralds vanished and turned Sonic into Super Sonic. He then launched towards Perfect Chaos and Perfect Chaos exploded with a big splash; Sonic jumped down safely and started running while his Super Form was vanishing.

As he was running, the scene changed the flooded city into a steep hilled city at night; he stopped running when he saw a black hedgehog with red highlighted quills holding an green emerald. He was soon gone when the black hedgehog teleported near him. When the black hedgehog teleported, the scene starts to change into a metallic base; both Sonic and the black hedgehog changed into their super forms and shot themselves towards the Biolizard; the Biolizard gets destroyed into a million tiny pieces.

Sonic teleports like what the black hedgehog did before, but the black hedgehog loses his super form and gets hurdled back to the planet below him knows as Earth. The scene changes to a grassy plain, with the black hedgehog watching the sky; he then sees a massive fleet of ships that has a logo of a man with a big moustache.

The camera zooms in at one of the ships that had a big explosion; you see Sonic grinding on a rail, while Tails is flying beside him and Knuckles is grinding with him; there were several explosions behind them, but they avoided them easily.

The Egg Fleet disappears and the scene changes to a grassy plain; Sonic jumps out of the rail and starts running on the plain. Soon, he wasn't alone, a girl who was about 20 years old was catching up to Sonic; however, Sonic stopped running when he saw in front of him, a silver hedgehog. The silver hedgehog hold out his hands towards Sonic and a blue aura surrounded Sonic; behind the silver hedgehog was a being made out of darkness that looked similar to the black hedgehog. The scene started changing from daytime to nighttime and the black and silver hedgehog was standing beside Sonic; they nodded their heads and the same seven coloured emeralds, turned them golden, giving them their super forms. The dark being changed from what he was, to a glowing winged beast; the super formed hedgehogs launched themselves towards the glowing being.

The scene changed from a dark night to a bright desert; Sonic reverted his super form and landed safely on the sand. He continued running and he noticed his ring on one of his fingers and a small flame on where his heart should be; while he was running, a female genie, who is named Shahra was levitating alongside him.

As the scene was changing, Sonic's ring disappeared and the flame on his chest lit out; with a glow of white light, a sword with a face near the handle appeared on his right hand. He stops running when he reaches a forest and he sees someone familiar to him in knight armour; he attacks him with his sword and guards the knight's attacks with it.

Sonic finishes the knight off and the scene changes once again, to a small beach village at night; Sonic looks at the full moon that has appeared and starts to change his body. Sonic's quills become more slanted, his ears become more pointy, his teeth become sharper, his hands become claws and his shoes have got huge spikes on them. The newly transformed Sonic runs towards some strange beings and uses his rubber-like arms to bash them.

He crushes a couple of enemies and starts to run once again; while he was running the scene changed from a village at night to a amusement park in space and his werehog form disappeared, showing his normal hedgehog form. As he was running, a bunch of coloured creatures flew alongside Sonic; there was a cyan one, a yellow one, a blue one, a green one, a pink one, a purple one, a violet one, a orange one and lastly a red one; the cyan coloured one entered Sonic's body and Sonic zapped forward in lightning speed.

Sonic, using the cyan wisp's ability, reached a place that was very similar to him; it had green hills and totem poles on the side of the road. The place was only half-coloured while the rest of it was white and lifeless; he then started running on this road, until he found a small ledge to jump on. Without hesitation, Sonic jumped in the air while he curled up into a ball; he then uncurled himself to find a smaller version of himself doing the same thing beside him. Once they both landed safely, the Modern Sonic charged forward while the Classic Sonic was catching up; once they were both at the same distance, they both raced each other.

Modern Sonic was in the lead and for the last time, the scene changed from a white space to a city, that was familiar to his home planet; in front of him, he sees a crab-like robot with saw blades on its legs and pincers. Standing alongside him was the black hedgehog from before and a human male who was unconscious behind them; Sonic and the black hedgehog, used their spin dashes against the robot and it gets destroyed in seconds.

You see the human from before in a bedroom, but he was alive and well, standing right next to the two hedgehogs; then suddenly the scene changes from a bedroom to a dark pit. Sonic shoots down head first, at the darkness below; after a few minutes of falling, he opens his eyes to see that he was standing on a platform. He looked around at where he was and after a few steps, lots of birds flapped away from the platform, revealing a stain-glassed platform, showing a boy with spiky, brunette hair, wearing red shorts and huge yellow shoes; but what confused the hedgehog the most, was the weapon the boy in the picture was holding, it was a key shaped sword...

Ohh... This opening sounds good! I hope everyone knows what's going on... Please review me!