Author's Note: Okay first off before I get ANY FLAK this is not the game, there are no Disney worlds in here. This is Sonic verse done like Kingdom Hearts. The basic concept will be kept but the events will be twisted and changed to fit sonic's universe, the kingdom hearts worlds such as Destiny Islands, Hollow Bastion, The World that Never Was WILL be present but for the most part it'll be sonic themed worlds, or even other worlds such as Digimon WILL make an appearance.

Also before anyone bitches I thought about including Chain of Memories style gameplay but…

Sonic: I took one look at it, read the fact that I'd have to use a deck of flipping CARDS to fight? And told him to go take a long walk off a short gummi ship. No way am I touching that iwht a ten foot keyblade.

Me: Thank you for that reaction sonic…also…at no point will Sonic wield the Kingdom Key just to differentiate this from the official game storyline.

With that said feel free to ask questions I'll try and answer but meanwhile…on with the show!

*insert simple and clean here*

Chapter 0: Encroaching Darkness

-Underground zone, Hedgehog's home early morning-

Manic glanced around as he picked up the leftovers from the night before "Ugh Sonic I know you like to go for a run first thing in the morning but this isn't right leaving me to do clean up" he muttered glaring out the window nearby.

-Underground zone, cliff outskirts of town, early morning-

A cerulean blue hedgehog stood on the edge of the tall cliff looking over the city with a frown on his face "I miss you sis…" he muttered glancing at the picture in his hands of the siblings with their instruments in hand, or in front of them in Manic's case, as smiled and slipped it away reaching up to brush the medallion around his neck absently.

"This world has been connected…" a voice stated behind the blue hedgehog as he spun a flash of light heralding the appearance of his electric guitar as he held his fingers poised overtop of the strings.

"Who's there?" he demanded "Come on out and show yourself!" he glanced around seeing nobody around as he sighed and lowered his guitar a bit.

"This world has been connected…tied to the darkness" the cold hissing voice came again "soon to be completely eclipsed." He continued

Sonic spun more still not seeing the speaker as he growled "Come on out and show your face you coward!"

"This world has been connected…" it retorted simply as the presence faded as Sonic frowned dismissing his guitar in a flash of light as he shook his head.

"That was frigging weird" he muttered faintly scratching his ear "oh well just enough time to snag a couple chili dogs before heading back to the house" he decided as he shot off in a streak of blue light.

~~~Hedgehog's House, later that day~~~

Sonic lounged across a chair fingering his medallion absently

"So how'd your run go earlier?" Manic asked as he flopped onto the end of a couch flipping on the television

"It went well enough" Sonic replied "but…there was something weird at the end there…" he proceeded to explain the arrival of that strange voice.

"But there was nobody around?" Manic asked confused "But that's impossible they'd have to be present to be talking…"

"I know unless they were constantly hiding and they'd have to be as fast as me to keep from being spotted" Sonic replied "It was frigging strange."

Manic nodded as his ear twitched "Sonic Look out!" he called as the blue blur flipped up over the back of his chair as it was slashed In half by a strange shadowy creature with a sword on one arm "What the hell is that thing?" the green hedgehog commented confused as he summoned his drum set.

Sonic summoned his guitar in a flash of light striking a chord as a laser blast shot from the tip of the guitar blasting the sword wielding creature as it flipped back upright moments later as Sonic smacked it in the head with his guitar knocking it back through a wall. "Oh boy…"

Manic leaned over and stared "Oh…crap" he shuddered seeing the horde of similar shadow creatures outside.

Sonic paled "Bro…I think its time to bring the house down" he glanced at Manic who nodded spinning his drumsticks around as he slammed them down into his drum kit a surge of energy shooting out from them to crack the ground as he dismissed it Sonic grabbing his shoulder and rushing out of the house.

But there were more…everywhere from every corner as Sonic paled Manic glancing around as he snagged his hover board hopping onto it "We've gotta find Sonia" he commented

Sonic nodded "Then lets go, I'd like to see these things hit mach 1" he growled "We're sticking together bro" he added glancing at Manic who nodded hunching down over his board as the engine revved as the two shot off Sonic nothing more than a blur of blue as a pulse of wind erupted from him shattering the glass of the city they were running through.

But before they got very far a creature lunged up ahead of them smashing a wave of rocks up throwing Sonic and Manic back in a tumble "Augh…what the hell was that thing?" Sonic muttered flipping upright as he summoned his guitar in a flash of light facing the massive beast ahead of him, it had four legs was bigger than most of Robuttnicks' death machines, and had a huge horn on its forehead

"No clue…but think we should give it a show bro?" Manic grinned as Sonic nodded twirling his guitar in his hands snagging it in his hands as he started to strum along it with a fierce grin sending a barrage of laser blasts at the creature as Manic summoned his drum kit sending several pulses of energy through the ground at it as the creature stumbled and roared in anger as the blasts splattered across its face and legs as it lowered its head a sphere of dark energy starting to gather on its horn as it fired it at the two as Manic smacked his Bass drum a wall of rock shooting up to block the blast as he was still blown back while Sonic shot to the side up the side of a building.

"Alright ugly time to show you what happens when you mess with the Sonic Underground" he muttered as he curled into a spin dash peppering the creature with more laser blasts as he shot down towards it the beast instead swung its foot at Sonic kicking the sphere into a building behind him with a thunderous crash.

Sonic groaned as he picked himself up reaching to tug his guitar free of the remains of the table he'd landed in, he had blood dripping into one eye from a cut over it, and his back was sore as if it was one big bruise "Hey I'm the only one who can beat those two up" a voice snapped as several laser blasts struck the creature making it roar in rage as it was forced back a few steps.

Sonic's eyes widened as he ran towards the pink hedgehog in front of the creature keyboard before her "Sonia!" he called

"Sonic man what the hell did you two do while I was gone?" she asked as he sent a pair of blasts at the creature hitting its eyes with them blinding it as it stomped around

"This is not us!" he protested "they just came outta nowhere, and we aren't doing a thing to it" he sighed as he sent out another barrage of blasts from his guitar, his fingers flying over the strings.

The beast roared as it sent out a shockwave knocking the two back as Sonic flipped upright first seeing the beast lifting its foot as he gaped "MANIC!" he called as he shot forward in a streak of blue light as his guitar fell from his hands vanishing in a flare of light as his medallion glowed the aura slowly shifting to gold as it flowed over his form as a tingling grew from his hand as a long glowing black and blue blade suddenly appeared in his hands as he swung it up out of instinct catching the creature' foot on the flat of the blade as he strained to hold it back, standing above Manic as he struggled with a cry he forced it back a step sparing his brother from being crushed as his shoulders slumped the blade vanishing as quickly as it had appeared.

The Beast roared as it started to glow and fade dissolving into shadows as a glowing red and black portal appeared behind it as it started to suck in the beast and anything that wasn't nailed down…as it grew stronger starting to drag Sonic forward as he didn't even think grabbing Manic by one hand and yanking him upwards to sling him across his shoulders as he turned to run away from the portal, his muscles crying out from the strain of deflecting such a massive weight had taken its toll on him as he did his best to run for Sonia who was moving towards him, the portal's pull growing stronger by the moment as he reached a hand out towards his sister.

"Come on…come on a little more" he grunted as the ground buckled beneath his feet tossing him back towards the portal as his fingers brushed Sonia's "NOOOOO!" he howled as he tried to recover as the portal swallowed him watching the world and his sister falling into darkness "Soniaaaaaaaaaaaaaaaaa…"

Before the blue blur could do anything else a wave of pain engulfed him as he blacked out the last thing he saw was the terror filled sight of his sister's face…

~~~End Chapter~~~

Okay…there it is the prologue to 'Winds of the Heart' so yes this universe is indeed the Sonic Underground Universe so a disclaimer I do not own Sonic the Hedgehog, Manic or Sonia, nor do I own Robotnick, or the Heartless.

But now Sonic and Manic are lost in the worlds, and Sonia has fallen into darkness along with Mobius, will they save her? Will they be able to even save themselves? Find out next time…on Winds of the Heart.