As Sonic was flying through the shatter space he was hit by debris and he was stopped floating in the void. As he recomposes himself and sees Shadow or another version of Shadow then the one he knows.

"Shadow? I don't have time to deal with, whoever you are! I just wanna go home!" Sonic says.

"Home? Home doesn't exist anymore. BECAUSE OF YOU!" Shadow charges at Sonic and it looks like he was gonna punch the blue hedgehog.  But the next thing Sonic knew was his lips were connecting to Shadow's. Sonic's eyes shot open. He couldn't believe it and then the moment ended as quick as it started.

"S-Shadow...its you, THE REAL YOU!" Sonic kisses him back. Shadow puts his arms around Sonic and pulls him in. It felt so right and good. This kiss was amazing, their tongues met. Shadow pulled away first and said, "The only me! I am so mad /happy to see you that I didn't know if I wanted to punch you or kiss you!"

"Seems like you were too happy to see me!" Sonic says in a teasing flirtatious tone of voice. "The Shadow I know would've never ran up and kiss me!"

The black hedgehog blushes and looks away. "Like I said, apart of me is furious with you!"
"Why?" Sonic asked

"What do you think I was trying to tell you, when you broke the Paradox Prism. You broke our reality. GREEN HILL IS GONE!" Shadow says and Sonic finally understanding the gravity of the situation.

"I know I cause this...it's just keeps getting worst..." Sonic says feeling horrible about his actions. 
Shadow couldn't help but feel bad for him. Even though it's his fault. "Look, our home maybe be gone...but I am glad I have you Sonic..."

Both male hedgehogs hold each other in a tight embrace. "Follow me." 

And Sonic does exactly that Shadow filling him in on what the void is and how he got stuck in there. Eventually both hedgehog arrived back at there home universe and arrived on Green Hill. 
"Whoa, this looks like home!" Sonic says excitedly as he runs around and sees everything is the same, say for the lack of bright colors that make his world lively and vibrant.

"As long as I'm around you'll always have a wing man!" Sonic hears a familiar voice in the distance and runs to it. He sees it's Tails in this ghostly state, but nonetheless he's happy to see his best buddy.

"Tails, you have no idea how much miss hearing that." Sonic says with smile.
"The forest is the most beautiful place on Earth!" He hears Amy says.
"AMY!" He shouts excitedly
"I don't need the details, just tell me where to smash!" Knuckles ghost like states says.
"Ha! I've missed you guys even you Knuckles!" Sonic says being snarky.
"You may not like the way I do things, but I get things done." Rouge's corporeal form says confidently.
"No complaints from me, Rouge!" Sonic smiles.

"As long as I'm around you'll always have a wing man!" Tails says again, which makes Sonic confused. Then everyone else starts repeating the same thing which makes the blue hedgehog worried.
"It's a shatter space Sonic, just like the others, a cruel version to make us suffer." Shadow says to him.
"How do I fix this?" Sonic asked Shadow.

"Come with me." Shadow and Sonic run off to the top of the mountain where the temple of the Paradox Prism was held. As they get there, Sonic sees the yellow prism that's connected to their world. He then recalls their final battle to stop Eggman, feeling guilt over destroying the prism.

"I'll do anything to be back..."
"Home..."

Sonic and Shadow started to discuss a plan how to save their world. To bring their prism shards and combined them into one again. But then they start to argue because Sonic wants to get Nine's help. They argued back and forth until Shadow spins attacks Sonic into the cave wall.
"You're turn is over! I'm taking the tech and going after the shards myself." Shadow states.

"NO WAY SHADOW! I KNOW WHAT YOU ARE CAPABLE OF AND THAT'S NOT GONNA HAPPEN! NINE AND ALL THE REST OF THEM ARE REAL! SO THE ONLY WAY YOU ARE TAKING MY TECH IS MY DEAD -" Sonic was knocked down to the ground before he finished his sentence.

"You could've at least let me finish what I was gonna say!" 

The two gay idiots started to fight. They found everywhere in Green Hill with their super speed. As they were fighting their physical encounter started to become different in another way.

 Sonic then used the momentum of their speed and pushed Shadow on top of him. They rolled in the grass and then Shadow pinned the blue hedgehog's wrists above his head. The two rivals panting and catching their breath. 

Shadow had one piece of the tech in his mouth. "That's one! Three to go!"

Shadow was about to get up, but Sonic wrapped his legs around his waist. "If you're going, you're taking me with you."

Sonic and Shadow looked deep in each other's eyes. They started to kiss and then they were having a passionate make out session. They grinded against each other's groins. Shadow started kissing the blue hero's neck. Sonic moaned loudly.

"Sh-Shadow..."
"I love the sounds you make. Keep making them. And I'll keep kissing your neck."
"Ah~! Sh-Shadow. You're the one that's making me like this. You know whether it's punching me or kissing me you still can't keep your hands off of me!" Sonic smirked.

Shadow then flipped him over and had Sonic on his knees, with his ass up in the air. Sonic looked behind him and saw the black and red hedgehog start to eat out his ass. He felt his warm tongue lick his pink hole.

"Oh my chaos! Shadow! Ah~! Fuck, ah!" Sonic cried out.

Shadow kept licking and sucking on the blue hero's ass. Sonic was moaning louder and louder. Shadow pulled his muzzle away and inserted two fingers into Sonic's wet hole. He was scissoring and curling his fingers.

"Fuck Shadow! Ah~! Right there, ah~! Right there, oh yeah!" Sonic moaned.

Shadow pulled his fingers out. Sonic whined. Shadow then pulled out his 12 inch cock. The length and girth were big, veiny, and throbbing. Sonic drooled at the sight of it. He got up and started stroking it.
"You like the size of it, huh?"
"I wanna taste it!"

Sonic then took Shadow's cock and began to lick and suck it. His mouth was full. He couldn't believe how big the dark hedgehog's cock was. Sonic kept sucking the black hedgehog's meat. Sonic's face was starting to become a mess of pre-cum and drool.

"You love it, don't you? The way it stretches out your mouth and fills you up. I can tell you want it inside of you, baby. How about you put your mouth away and let me stretch that cute little hole of yours."

"Yes! Give it to me Shadow. I need you!" Sonic bends over and stretches his ass cheeks wide open.

"Do it. Fuck me. Make me your bitch. Make me feel so good, Daddy!" Sonic teased him.

"Fucking tease." Shadow growls and slaps his cock on his ass and teases him by pushing the tip of his cock inside him.

"Oh my Chaos! Ah~! Mmmm, please!" Sonic begs.

"I love the way you beg for it." Shadow says smirking as he inserts his entire length.

"FUCK, SONIC!" Shadow yelled.

"AH~! SHADOW!" Sonic screamed.

Shadow began to pound the blue hero's ass. His pace started slow and he gradually started to speed up. The dark hedgehog had a tight grip on Sonic's hips.

"Faster! Harder! More! Shadow!" Sonic screams in pleasure.

"Such a naughty hedgehog." Shadow says as he spanks him.

Sonic's face was a hot mess of tears and drool. He was losing his mind in pleasure. He couldn't control the sounds he was making. Shadow's cock was pounding him.

"Fuck! Your hole is squeezing me so tightly, you little slut. You take my dick so well, baby. It's like you were made to take it." Shadow says while fucking Sonic.

They soon switch to a different position, with Sonic riding the dark hedgehog. Shadow thrusts into Sonic as the blue hero is bouncing on his lap. Their lips crashed together, and the two hedgehogs are making out passionately. Sonic can feel Shadow's hard cock hit his prostate.

"Fuck me! Faster Shadow! Harder! Mmm, you're so deep in me, baby!"

"You like that? You like it when I fuck you nice and deep? How does it feel to have my big dick in your ass?"

"Mmmm, feels good Shadow."

The two switch positions again. Shadow's on top of him with his cock still inside the blue hero. Fucking him the lazy doggy positions.

"Fuck me. Make me cum. Oh Chaos! Yes! Ah~!"
"I'm gonna fill you up. Make you mine. Fuck! Ah~! Sonic!"
"Fill me up! Please!"
The dark hedgehog fucks the hero hard and fast. "Cum for me."

Sonic's hole clenched and squeezed Shadow's cock as the blue hero came. He squirted all over his the grassy floor below him. He then felt Shadow's warm seed fill him up. 

"Ahhhhhh~!" Both hedgehogs cried out.

After that round the two hedgehogs were catching their breath. Sonic's asshole was really stretched and was leaking Shadow's cum. He loved it. He was smiled as he feels it spills it out of him. The blue hedgehog falls unconscious from the pleasure. 

Shadow looks at the other male hedgehog who is on the ground.

"What...the...fuck....JUST HAPPENED?" He says to himself not sure how they went to fighting to fucking in a matter of minutes. It was like something took over them and the heat of the moment turned into something else.

Shadow then picks up Sonic and puts him on his back. He carries the blue hedgehog all the way to Sonic's own home.  He places Sonic's in his racecar bed and takes the tech off his gloves and shoes, placing it on his own.

"I'll fix everything....I promise..." Shadow kisses Sonic on the forehead and dashes off, gaining enough speed to disappear from this reality and enters the void.

Not too long after Shadow left, Sonic opens his eyes and sees he is in his own home. The last thing he remembers and Shadow were fighting but then it quickly turned into something else.

"Wait...SHADOW!" Sonic p, bushes the covers off of him and realizes the tech Nine give him was gone. He had to find Shadow and stop him fast.

Sonic runs all over Green Hill to see if he can find the black and red hedgehog. But to no vail and realizes Shadow must've left this universe.

"GODDAMN IT! I have to find a way to get out of here and stop him. Before he actually hurts or kills somebody." Sonic then notices his shoes were sparking and admitting high voltage of energy. He has an epiphany and starts running as fast as he can until he blinks out of existences.

He exits out of his universe and into the void. Sonic sees the ship of the Egg Council going into the Boscage Maze universe. He then sees Shadow behind the Egg Council trying to catch up with them. Shadow tries his hardest to enter the Boscage Maze but the feedback of the portal knocks him back rendering the black hedgehog unconscious as he is sent flying into the void.

"SHADOW!" Sonic shouted. He runs to the black hedgehog trying to catch him as he falls deeper and deeper into the void. But with all of his speed and efforts Sonic manages to save Shadow carrying him in his arms. They land on one of the many floating crystals in the void. 

"WOOO! I AM EXHUASTED!" Sonic said with a smile on his face. Shadow was starting to wake up feeling groggy. Sonic looks at Shadow and has a bit of a smug look on his face.

"You're not dead! You're welcome babe, on the bright side, I get to hold this over you FOREVEEEER!" Sonic says in a playful flirty tone to his rival/lover. "Oh and I'll take my tech back."

Shadow grumbled in frustration as he was about to take off the tech, but he sees they were already removed and Sonic already placed them back on his own shoes and gloves. "Ha, Gotcha!" Sonic winks giving Shadow a cheeky smile.

"I don't understand...I thought the tech would get me through the gateways, why didn't it work? I saw Nine give you the tech...in the lab...you picked up the prismatic energy when you ran fast....and crossed over into the void. I thought it was the tech...but it was something else....it's you..." Shadow says having epiphany.

"I guess, that makes me special right?" Sonic asked in cocky tone of voice.

"The only way to fix the reality YOU shattered is that if we work..."

"Together?" Both hedgehog said at the same time although Shadow hates to admit since he prefers to do things by himself.

"Wow...coming from you...well...it's not like you...at all....Then again today has been kinda weird with you with the kissing, and fucking. But still after today, you still hate having to admit you need me?" Sonic teased.

"YOU NEED ME!" Shadow rebuttaled 
"Yeah...that's true...I'm always gonna need you Shadow....But not as much as you need me! So wish me luck out there!" Sonic kisses Shadow on the lips and jumps off the crystal.

Shadow watches as Sonic enters the portal and ends up on Boscage Maze. He then looks on his wrist and sees that his device was working. He was able to go through the gateway and into the Boscage Maze universe. Sonic runs through the jungle as he follows the airship in the sky.

"I wont let you down Shadow, together we are gonna fix this!"