[This will be a short chapter. This will also feature a Evil speedster that  eish vengeance. With that..please enjoy]

[No one's POV](Timeline: Season 7)
Y/n can be seen laying on a rooftop of a building. He then manages to stir awake..

Y/n: Uhh...what happened?

He slowly gets up and look around his surroundings to see that he is in a big city..

Y/n: Where the living hell am i?

He felt something big in his pocket. He reached in and pulled out his wallet, which is now full of cash.

*About $3000*

Y/n: Wow..the currency changes, based on what world i go to. That's convenient.

He stored his wallet back in his pocket and the thinks on what to do..

Y/n: Ok. Whatever that thing did to me, it swallowed up Destiny Islands.. and it's with it. But what the hell happened to Kairi? She couldn't just disappeared like that.

Next thing he hears is people screaming. He looked down to see multiple creatures attacking the civilians..

Y/n: They're here too?? Better armor up.

Y/n reached to his left shoulder and pressed onto the gem, encasing him in a bright light before it dimmed down to reveal him armored up..

Heartless..

Y/n: That voice again..

This is the name given to those that loses their hearts

Y/n: Heartless..a name to remember. Time to go help this people..

The Keyblader then jumps towards the Heartless to stop their rampage..

[At S.T.A.R LABS]
At a inner secret laboratory, two people were inside overlooking some monitors..

Chester: *hears beeping* What the..*goes to the monitor*

A trail of Orange lightning appears in front of Chester and Caitlin. This showed to be Central City's know hero Barry Allen aka The Flash.

Barry: Is there something going on?

Caitlin: There's footage of unknown dark creatures attacking people. At CC Jitters, the CCPD, everywhere.

Barry: What could those things be?

Cisco: Scanning reads that these creatures have dark matter within themselves.

Barry: Whatever they're are, we have to put a stop to them.

Caitlin: Wait. There's something else.

???: Yo.

The group turned to see a fellow team flash member, Ralph Dibny aka Elongated Man..

*I know that the original actor was removed due to past offensive tweets, but for thus story, let's see him still in the show*

Ralph: Why do I see a armored guy fighting these creatures with a giant key that looks like the Flash?

Barry: What are you talking about?

Ralph: Check the news.

They turn on the news network to see Y/n in his armor form battling the creatures with his Keyblade.

Ralph: That's a very big key.

They then see Y/n casting Blizzard magic Freezing some of the soldiers before slicing them up

Caitlin: He can use Ice??

More and more of them started to appear..

Barry: Looks like he needs help.

Caitlin: Go to him and bring him here.

He nodded and sped off, as Chester and Caitlin stared at the camera feed with Y/n fighting the heartless..

[With Y/n]*20 seconds earlier*
The things eventually started to disperse, leaving the young keyblader to take a breath.

Y/n: Good thing those things are gone.

Just as the young man was gonna catch a breather, more started to pop up.

*4 Large Body's. 10 Soldiers.*

Y/n: *groans* You gotta be shitting me..

He goes to fight them again. As Y/n was swinging his Keyblade at the dark creatures, he somehow started to produce Lightning from all around his body. It wasn't normal lightning. It traveled to his Keyblade as it then transformed  into a new variation of his weapon..

Y/n's eyes sparkle with Purple lighting for as His inner mind, his nerves were shown to have purple energy connecting to them and traveling at a fast rate..

*In the meantime while armored, the silver lining on your armor becomes purple when using the SpeedForce*

Y/n: Whoa..*raises new Keyblade in his front view* This thing packs a punch.

With his newfound speed, Y/n dashed towards the Heartless, slicing through the Soldiers. The Large Body's were a bit difficult, so he attacked from behind. A few more Soldiers appeared and was about to attack from behind. Next thing he knew, a trail of Orange Lightning sped pass him and eliminated the rest of the creature's, giving shock to the young man.

Y/n: Ok, that's new.

???: You're telling me.

Y/n quickly turned his Keyblade towards whoever spoke behind him. The person was wearing a scarlet suit with lightning trails. He also had an white logo with a lightning emblem on it.

Flash: *hands up* Hey, hey, relax. I mean no harm..

Y/n then slowly dispersed his new Keyblade and sighed..

Y/n: Don't sneak up on me like that..

Flash: Noted..call me the Flash.

Y/n: Y/n.

Flash: What brings you to Earth-1?

Y/n: Earth one? Is that what this world is called?

Flash: You're not from around here, are you?

Y/n: You know me..im a stranger here myself.

Flash: *feels something* Wait..somethings odd about you.

Y/n: Strange..because I felt the same electrical energy you have.

Flash: Maybe you should come with me.

Y/n: You know this world better than me, so lead the way.

Flash: *smirks* Just try and keep up.

Y/n: *sparkle with Purple Electricity* You're on.

They both get into running stances and in a blink of an eye, they speed off in trails of Orange and Purple Lightning.

[Timeskip]
Both of them made it inside the S.T.A.R Labs with the surprise of Cisco and Caitlin. Ralph looked mildly amused..

Cisco: Ok..wasn't expecting another Speedster.

Ralph: The only other speedster with purple lightning was a future daughter of the flash.

Y/n: *looks towards the flash* Wha-

Flash: Don't ask.

Caitlin: *to Y/n* Do you know how you got here?

Y/n: Well..that's a tale that'll take time.

Barry: Go ahead.

Y/n: Alright.

[Somewhere in Central City]
A dark portal appeared as a man in a dark coat appeared out of it.

Figure: So..young Y/n is here in this world.

He removes his hood to reveal another man. In terms of facial features, he sports gold eyes, pointed, elf-like ears, upturned eyebrows, and dark hair with several grey streaks tied into a long ponytail.

He also has two visible injuries on his face; the first being a damaged right eye covered by an eyepatch, while the other is a large jagged scar extending from his left cheek to just under his left eye.

Xigbar: And he's connected to the SpeedForce. Big bad Xehanort feels he can be a problem. Let see if he can take this guy.

Xigbar then reached inside his coat pocket and took out a glowing errie stone.

He looks at it before he waved his hand up as a portal appeared next to him. He then threw the metal into the said portal, which then glowed a eerie blue before the stone flew back into his hand. When the portal was was dismissed, another person stood in it's place. This man was a complete look-alike from Barry Allen himself, except the right side of his face is horribly scarred with burns. This was Barry, but calls himself Savitar..

The Time-Remnant opened his eyes as he looks around.

Xigbar: hello.

He quickly turned to see Xigbar leaning on a wall..

Savitar: Who are you? And why how am I still here?

Xigbar: Cool your jets, Speedy. You're here because you are needed.

Savitar: You brought me back..for what exactly?

Xigbar: I thought maybe you would like revenge on Team Flash for ending you.

Savitar: Team Flash..they robbed me of my Godhood.

Xigbar: Also, another thing. There's a new Speedster in town.

Savitar: What??

Xignar: Yep. Goes by the name Y/n.

Savitar: That's blasphemy.

Xigbar: If you really want to end Team Flash like you should have..you'll need this.

He tosses him the "Philosopher's" Stone, which Savitar slowly gains a malicious smirk. He channeled the stone's power to reform his armor.

Savitar:  ̶T̶h̶e̶y̶ ̶w̶i̶l̶l̶ ̶p̶a̶y̶ ̶f̶o̶r̶ ̶c̶a̶s̶t̶i̶n̶g̶ ̶m̶e̶ ̶f̶r̶o̶m̶ ̶m̶y̶ ̶a̶s̶c̶e̶n̶s̶i̶o̶n̶.

Xigbar: Go kick ass..my Liege.

Savitar then sped off in a trail of White Lightning as the Nobody stared at the God wannabe speedster..

Xigbar: *smirks* Now this will be a show to watch.

[First part of the chapter is done. I hope you enjoy]