A/N: This story picks up at the beginning of the Kingdom Hearts and happens sometime in season 5 of Supernatural for the Winchesters and Castiel. In this universe, Disney and Final Fantasy characters don't exist in Sam and Dean's world.

CHAPTER ONE

The end of the world came sooner than either Sam or Dean predicted. Black shadow things skittered across the Earth's surface, their yellow eyes peering out at their surroundings. They twitched and jumped around, attacking people and breaking into things. And no matter what weapons they tried to use against the creatures, they just kept coming and coming.

Sam and Dean stood back to back, shooting and hacking at whatever came their way.

"Cas! Castiel!" Dean yelled to the heavens as he shot another couple of the dark shadows. "Get your feathery ass down here! We need help!"

"He's not coming Dean," Sam replied over gunshots.

Dean gritted his teeth. Of course Cas wasn't coming. If he wasn't there by now, he was never going to be. He cursed as his gun ran out of ammo and with no time to reload he was forced to pull out a knife, though he may as well not have. Their attempts were in vain and after a few more moments the brothers were overwhelmed by shadows.

Dean's world went dark. The last thing he heard was Cas' rough voice calling his name.


"Hey. Hey, dude," a grumpy male voice cut through the darkness. "You gotta get up. You're blocking the entrance to my shop."

Dean's eyes opened slowly. "Where am I?" His vision slowly cleared, blurry blobs becoming well-defined shapes. He was lying on a cold cobblestone ground, the harsh glow of neon partially obscured by a human-shaped form.

"Traverse Town," he replied. "Now get up."

Dean sat up, his head throbbing. There was some kind of town center in front of him illuminated by streetlamps. There were some other folks around town, though none of them really paid any attention to him. He turned to look at who the voice belonged to, but the man had already gone inside the shop. The giant neon sign above the door said "Accessories" and another brightly lit sign advertised jewelry slightly above and to the left of it.

The hunter dragged himself to his feet and pushed open the wooden door leading into the shop. The man at the counter looked up. He was burly guy with hardened eyes. His blonde hair stuck up into a point behind the aviator goggles he had strapped to his forehead. He chewed on a toothpick sticking out of his mouth like no tomorrow. "Well look who it is. Finally awake are you?"

"Where am I?" Dean asked again.

"Traverse Town. You hard of hearing or something?"

"Where's that? United States? Canada? Mexico, maybe?"

The man laughed. "I forgot. You're new. There are multiple worlds out there, all separate from each other. Your world was one of the unlucky ones. It's gone, kid."

Dean shook his head, trying to comprehend the situation. "No, no, no, you don't understand. We were supposed to have more time." He slammed his fist on the counter. "Lucifer wasn't supposed to destroy the world, not before…"

The man scoffed. "No, you don't understand. I don't know what you're blabbering on about, but your Lucifer is not the one who did this."

"Then who did?"

"There's these things called Heartless and they get to the core of a world, then they just swallow the world whole."

"Swallow it?"

"Are you deaf or somethin' kid? Yeah, swallow. It gets destroyed."

Dean frowned. Then it hit him, the realization like a ton of bricks. Sam. What happened to Sam? Bobby? Castiel? All those people on planet Earth? "What- what happens to the people?"

The man shrugged. "Depends. Some get swallowed with the darkness too. Others get scattered among the worlds, like you."

The man's answer got him thinking. Then Dean asked the one question he was scared of most: "Have you seen my brother, Sam? Tall kid" -he showed the shop owner by placing his hand several inches above his head to indicate his moose of a brother's height- "brown hair to his shoulders, wearing plaid? Any of that ringing a bell?"

The man stroked his chin thoughtfully. "Nah. You should take a look around though, maybe you'll find him. Most folks seem to make their way here anyway."

"Thanks," Dean replied. He held out his hand for the man to shake. "Dean Winchester."

The man glanced at his hand before roughly shaking it. "Cid. Good luck finding your brother."

Dean nodded and then left the store. He reloaded his gun, finally, and headed out to explore the town. Dear Lord, he hoped Sam was here. Sam had to be here. He didn't know what he'd do if Sam didn't make it.


After an hour of searching, Dean concluded that Sam was nowhere to found in the main part of town, the part that he picked up on that was called the First District. He stood in front of the big double wooden doors that lead to the Second District, the district that locals told him was filled with Heartless.

"You owe me one, Sammy," Dean muttered before walking through the door.

The Heartless were on him the moment he walked through the door.

He shot at them, most shots hitting their mark and the Heartless would vanish in wisps of darkness. He pulled out a knife in his other hand and before he knew it, the wave of Heartless was gone. He stood panting in the middle of the Second District. It was another part of town, obviously, but a lot bigger and a heck of a lot empty. There were shops and hotels and even what looked to be like a bell tower. The water from the fountain sounded in the background. It was a damn shame that all these Heartless made it uninhabitable.

Suddenly, something shot past him. Dean caught the glimpse of a kid with bright yellow shoes and bright red pants go past him and then down an alleyway, chains clinking with every step the kid took. Something big and metal glinted in his hand, a sword, maybe?

"Hey kid, it's dangerous out here!" Dean called, but the kid had already disappeared around the corner. Dean sighed and ran after him, seeing no choice. Dumb kid.

When he turned the corner, the kid was gone. At the end of the alley was a door to the Third District, another district of the town that its residents had told him to avoid. "Damn it. I'm going to regret this, aren't I?" He went in.

The district seemed calm enough, harmless enough, on first glance. Dean saw the kid from earlier step into the main courtyard, only to be piled on by- a duck and a dog? Even from where Dean was standing, he could hear them both shout with glee, "The key!"

In the kid's hand was a giant key. What the hell kind of world did Dean step into? There wasn't much time for anything else when the ground began to shake. Dean hopped down into the courtyard, almost spraining his ankle in the process, before huge columns of the courtyard floor rose to block them all in.

There was a rattling sound, like metal, and in front of the fountain in the corner, arose a huge armored Heartless. Its limbs moved freely, disconnected from the rest of it. Its stomping created a shockwave that nearly took Dean off his feet. He saw the kid, the duck, and the dog get into fighting positions so he grabbed his gun and his knife and ran out to join them. If they were surprised to see Dean, they didn't show it. Instead, they jumped right into the fight.

Metal clashed together as the key kid swung at the giant Heartless that must've been more than two stories tall. Dean soon ran out of bullets and found himself using his knife more and more, though it wasn't exactly useful because of its such short range. Out of the corner of his eyes, he spotted the dog with the knight hat using his shield to combat the Heartless while the duck in a blue mage's robe shot fireballs at it.

The four fought side by side until the Heartless finally clashed to the ground with a loud bang. A little pink heart rose up to the heavens and the armor faded into nothing.

Dean turned to the kid. "Not bad, if I do say so myself."

The kid grinned. "Thanks. The name's Sora."

"Dean."

"Donald," the duck said with an odd lisp.

The dog grinned. "The name's Goofy. We've been looking all over for you."

"Who, me?" Sora asked.

Donald nodded. Another voice spoke up and Dean looked up to see who it was. A man clad in a black leather jacket with black pants and a white shirt. A pale scar sliced his face diagonally in half. His short spiky hair came just to his shoulders. Multiple belts were strapped around his waist and forearms. He was accompanied by a lithe woman with clear blue eyes and short black hair. She wore a green halter top with blue straps, faded yellow shorts, pale socks up to her thighs, yellow shoes, and a yellow scarf.

"They, too, have been seeking the wielder of the Keyblade," the man said. He glanced at Dean, but didn't say anything to him.

"Hey, why don't you come with us? We can go to other worlds on our vessel," Goofy said to Sora.

Other… worlds? thought Dean. How many other worlds could there be?

Sora looked down at the ground. "I wonder if I could find Riku and Kairi…"

"Of course," replied Donald. Sora visibly perked up at that.

Goofy leaned down to Donald, saying in a low voice, "Are you sure?"

"Who knows? But we need him to come with us to help us find the King."

The man in leather stepped forward. "Sora, go with them. Especially if you want to find your friends."

Dean looked sharply at Sora. "You lost people too?" Sora nodded. "I'm looking for my brother."

Sora looked at Donald hopefully.

"No. We don't have enough room."

"But-"

Dean cut in. "It's fine. I travel better alone anyway. But if you meet a tall guy named Sam, let him know that I'm looking for him, will ya?"

Sora nodded. His attention turned back to the duck and Goofy. "Okay, I'll go with you guys."

Donald and Goofy put their hands- or er, wing in Donald's case- on top of each other between them. Sora placed his on top. "All for one, and one for all!" Goofy said with a grin.

Dean smiled and headed for the door. As he passed the man and the woman standing idly by, he stopped. "You wouldn't happen to know how to get to another world, would you? I need to find my brother."

The woman smiled. "I know exactly who you can talk to."


That was how Dean ended up in front of Cid's accessory shop again. He walked in and asked Cid flat out, "You can get me a ship to go to other worlds?"

Cid looked at him sharply. "Who told you that?"

"Some chick named Yuffie and her pal Leon," Dean replied. "I need one. My brother's not here. If I have any hope in finding him, I need a ship. I'll do whatever it takes."

He looked thoughtful for a moment. "Okay, I'll help, but it's gonna cost you."

"Like I said, I'll do whatever it takes."


Sam woke up on the stone cold ground. His muscles ached and his head hurt with a fierce burning. When he heaved himself up, his muscles screamed in protest. He was in a circular room with a table in the center that had a map on it. Two huge holes in the rock gave the view of a large body of water, dark and foreboding, with no sign of sunlight.

"Ah, good, you're awake," someone said, coming into the room. It was a guy wearing a long black robe that tumbled down onto the floor. His skin was a light gray and blue flames calmly blazed on his head. His chin was long and he had these shifty yellow eyes that made Sam on edge. "For a moment there I thought you'd be joining my legions of the dead." He gave Sam a toothy grin.

"Legions of the… dead?" Sam asked.

"Excuse me, I'm Hades, Lord of the Underworld," he said, holding out his hand for Sam to shake. "And you are?"

"Sam," he said, glancing at the hand warily. "Sam Winchester."

Hades' eyebrow hitched up a bit at the name. With no sign of Sam taking it, Hades pulled back his hand. "Winchester, eh? Well it was quite rude of you to drop in like that. You're lucky I pulled you out of the water before those greedy dead dragged you in too far."

"Um, well, thanks."

Hades rubbed his hands together. "Since I kind of saved your life- ironic, right? - I need you to do me a favor." Sam was about to respond when Hades added, "I've just signed you up for the Games." A ticket appeared in Hades' hand. "Consider it... payment. You win, your debt is gone. Simple, right?"

"And if I lose?"

"Well, let's just cross that bridge if we get there."


All Castiel could see was darkness. Pure, rich darkness. Then a voice floated about him, though its source he could not pinpoint: "This one will do just fine. The vessel is inhabited but that is of no import. I sense great power within this one. The Darkness will devour him quite nicely."

"Sam! Dean!" Castiel called, but his voice was lost in the nothingness.

Suddenly, the corporeal plane appeared below him. Dark stone walls rose around him. A figure stepped into the dimly lit space. "Shall we begin?"