Oh yeah! Are you ready?! This isn't just some fanfic, this is honestly what I think would happen if these two met. So here it is..

Kingdom hearts x Subarashiki kono sekai/IT'S A WONDERFUL WORLD/the world ends with you.

It's a small, small world.

Neku ran through the streets.

Brain wave, main wave

Psycho got a high kick

Collect and select

Show me your best set

Headphones on.

"Crystals, blisters"

It's all over now

Psycho cane

You're so keen

I need more candy canes

He only heard his own thoughts in his head.

"Cold cake, cold break"

Freak got a high kick

Mr. Twister

Moist with roistering

And they were louder than ever.

Stick it up

Take it up

Step aside and see the world

Effect has defects

"Take a bow to the moon (Bow-wow to the moon)"

'Late for work, late for work, gonna be late-'

"Morning rays, Hairspray Queens"

He heard shouts and screams, laughter, and talking

Get on their way to their nests, the west

'Can't stop, won't stop, late. Late.'

"Honest, they once had a dream"

He wove in between people

Belles of society, in the shells of their unity

'Late, late, penalty, late, wish I had speed pins.'

Cornet'n spinet

There was a hole in the crowd.

The sound flows,

'Nothing's going to stop me now.'

Follows till they're home

The shouts became louder.

Dragged by the power of dreams

'It's not important-'

That power is yet unknown.

And then the world crashed on his head.

"Arrgh!" Neku growled under the weight. He squirmed to turn over and found-

A boy had fallen from the sky.

"Ooh, that hurt.." the stranger opened his eyes and registered Neku's face. "Ah! I'm sorry!" He rolled off of Neku, stood up, and held out a hand. "Are you okay?! I'm sorry..."

Neku waved him off, and stood up on his own. "Ugh..." he scratched his head. "Where the hell did you come from?"

"Um, far." He glanced around. "This is...Shibuya, right?" He held out his hand, took Neku's and smiled.

"My name is Sora. What's yours?"

Neku blinked as Sora shook him violently. "Neku….Sakuraba." 'The hell? What's with that cosplay?'

"It's nice...to meet...ugh..."

"Sora?"

He collapsed.

"Sora?!"

Noon.

Sora woke up, slumped over a table. 'I arrived in Shibuya…' His eyes opened, and they rested on a familiar sight. "Neku."

Neku stood in front of him, carrying a tray of food and coffee. "Here. The pastries are a day old, so you don't have to pay for them."

"Oh…thank you." He looked around. "Where am I?"

Neku turned and walked back behind a store counter. "The wildkat café. I was on my way to work when you fell on me."

"Oh," Sora sipped the coffee. "I'm sorry for the trouble."

Neku shrugged. "No big deal. The boss wasn't even awake when we got here."

Just then, Neku's boss walked in. Neku rinsed a coffee mug. "."

The man glanced over his shades. "Still no customers, eh? I see our guest is awake."

Sora stood up. "Ah, thanks for the coffee and doughnuts."

Hanekoma put on an apron from behind the counter. "You're welcome, stranger. So, where do you come from?"

"Uh….far, far away?"

"Past the second star?" Hanekoma said jokingly.

"Yeah, something like that."

The bell on the door chimed, and Neku's usual customers came in.

"Hello!""Hey Neku! Hanekoma-san!"

"'Sup!"

Three teenagers walked in. one tall boy, wearing a beanie, his sister, a small blonde with the same blue eyes and fashion sense. Behind them a short girl with ( SPOILERS but I'd think your at least halfway into the game by now.!).

"Neku! We got your text!"

Sora blinked. 'There's something familiar about them…' "Uh, hello."

Neku shrugged. "Oh, Sora, this is Beat-"

The tall boy gave him a nod. "Wassup?"

Neku gestured towards the girl next to him. "Rhyme-"

She looked up at him. "Pleasure to meet you."

He nodded at the last guest. "And Shiki, guys, this is Sora."

The girl squealed. "Hi! Ooh! I just love your cosplay! What show is it from!? Did you make it yourself?"

Sora cocked his head to the side. " Uh…"

"What's cosplay?"

They all took a step away from him .

"'What's cosplay?'" Neku repeated the question in confusion. "You're joking, right?"

Hanekoma eyed him curiously from behind the counter. "Sora..." He sipped his coffee. "You wouldn't happen to be a Reaper, would you?"

Sora raised an eyebrow. "What's a reaper?"

"I see." Hanekoma sipped his coffee again. "And just where are you from that you've never heard of Cosplay?"

The mood in the room had shifted. Sora looked around the room. "Well-"

Neku glared at him. "I suggest you start talking."

"He's not from here, Neku."

Joshua stood in the doorway.

Neku blinked at him. "Josh..."

"In fact, he's not even from this world."

Rhyme looked at him. "Is he-Noise?"

Joshua walked into the café. "No. In fact, I don't know what he is. I can't read his thoughts-or anything about him. It's as if-"

"He just fell out of the sky." Neku finished, "Start talking Sora. Who are you?"

Sora raked a hand through his hair. "Oh, man...I'm really not supposed to tell you…Riku'll be pissed."

Joshua locked the door to the café. "Oh really?"

"Okay," Sora held up his hands. "But, promise not tell?"

Neku glared at him, Hanekoma sipped his coffee and they all nodded.

"Where to begin, ah…Here."

Sora held out his hand. There was a flash of light-and a large Key appeared.

"Whoa..." Beat said in astonishment. "That is one huge key."

Shiki clasped her hands together. "Nice party trick."

"This is the keyblade." He held it out to Neku who held it for a moment, it shimmered, and returned to Sora's hand. "I'm the keyblade master. Well.." he scratched his head," I'm not the only one with a Keyblade, but the-I guess I'll start at the beginning." He glanced at the chalkboard where Hanekoma wrote the special of the day. "May I borrow this?"

He scribbled and drew on the board. "Basically, there is more than one world. Each one has its own rules and stuff, and even different versions of people are found in other ones." He drew a model, similar to the solar system, but with the names of worlds instead of planets. "Even though the worlds are different there's one thing that's the same." He erased his 'world system' and drew something else. "This is a Heartless."

Shiki glanced at it. 'It looks familiar…'

"Heartless are monsters that come from darkness in people's hearts. When a person's heart is taken away, they become a heartless. Also..." He drew another figure. "This is a Nobody. When a heartless is created, a nobody is made too. They're the remainder of a person. If a person has a strong heart, their Nobody looks human." He continued to scribble. "Heartless attack people and steal their hearts, creating more heartless. Nobodies will attack people, or if commanded retrieve hearts in order to become whole again. If enough are gathered, one can create Kingdom Hearts and release the darkness sealed away..."

He erased the picture. "That's where, I and my friends come in, we defeat the heartless, using Keyblades."

He looked up from the chalkboard. "My friends and I travel from world to world, but lately, a lot of new doors have been showing up. Someone is letting Heartless into these worlds and creating Nobody armies." He took a short breath. "I came here because we think this might be where the source is."

"Okay," Neku sat on a stool. "So what you're saying is that you're some defender from another world, here to defeat monsters that want our hearts."

"Exactly." Sora put down the chalk.

"Right." Neku stared at him. "What hospital did you break out from?"

"Arrgh." Sora pulled something from his pocket. "Jiminy, they don't believe me!"

Joshua and Shiki looked at him in terror.

"Sora?" Neku said, "You're talking to a bug."

"Jiminy," Sora continued, "They think I'm crazy! Don't you have anything that can help?"

The cricket eyed them.

Rhyme bent closer for a better look. "Ah, it's staring at us." She pointed at it. "Hey, it's wearing little gloves!"

The cricket tapped its foot. "It's impolite to point young lady."

"WAAAAH!" Beat pulled his sister back. "It talked!"

The cricket tipped his hat. "Jiminy Cricket's the name. I'm a friend of Sora's." Jiminy pulled out a large book from his pocket. "I chronicle Sora's adventures." Rhyme took the book from him and they began flipping through it.

"Destiny Islands…Ancient china...Neverland...Atlantica..." Rhyme stopped at the pictures. "According to this you've really been places."

"Ooh!' Shiki stopped at a page. "You were a mermaid before, that's so cool!"

Neku blinked. "Okay, according to the talking bug-"

"Jiminy." Sora interjected.

"Jiminy ,and his book, you've been all over the place."

"Yeah, I-" His keyblade reappeared and swung around the group.

Neku ducked, "Woah, you don't have to kill me 'cause I don't believe you!"

"Ah!" Sora struggled to keep it still. "There must be heartless nearby!"

Chapter one: "Twister and Light-It's simple and clean"