You went through a portal of darkness and appeared on the tallest building in the city of Vale and the streets were filed with people being happy and you smirked and placed your hand on the roof making heartless go all around the city scaring people making them feel fear which attracted Grimm and you smirked as you were creating the chaos and it started to rain making it darker out in the night and the Hunters and Huntresses started to appear and a certain pair from beacon showed up.

(Y/n): Team RWBY...!? and Team JNPR...

They were killing Grimm and trying to get rid of heartless but they were struggling

Ruby: There's too many

Weiss: We need back up

Jaune: We won't be enough to kill them. AH!

He tensed up and Ren killed the Grimm that was going to attack him

Blake: What are we going to do

Yang: Where did these creatures even come from?!

Pyrrha: Look up there

They all looked and saw you stand up there

(Y/n): Well time for a reunion

You turned your back to them and fell back off the building falling towards them. Both the teams realized the heartless weren't attacking and there were no more Grimm in that area. You flipped and landed making the ground shake and the thunder roared in the sky when you landed.

Ruby: Are you the cause of these monsters

(Y/n): ...

Jaune: Who are you?

Weiss: What do you want huh?

Blake: Why are you torturing these innocent people, What are you gaining from this?

(Y/n): ...I'm going to enjoy beating you all..

Yang: You don't even know us

(Y/n) conjured two keyblades and Ruby gasped recognizing they were (Y/n)'s

Ruby: What have you done to (Y/n)?! Where's my best friend, What have you done to him?!

The lightning struck in the air making half of your face appear and your eye changed from your normal eye color to yellow

Ruby charged and used her semblance to amplify her speed and she swung at you but you easily dodged and kicked her in her ribs making her fly into the building making your back face the others

Ruby: Owww

Yang got pissed off and awakened her semblance and she charged at you trying to kill you 

Yang: I'm going to kill you!!

She got closer and swings but you caught her fist without looking then squeezed it and you slowly turned your head and looked at her 

(Y/n): So Xiao long here's the deal. You see I've had a change of heart and I can't allow myself to get beaten by someone like you. 

Yang gasped and she realized it was you and you slammed her into the ground. Blake and Weiss both charged and you threw one of your keyblades at them, Blake slid under while Weiss flipped over but you teleport-ed in between the both of them. Before they could react you grabbed Blake and threw her into Weiss and shot fire at them making a huge explosion. 

(Y/n): I hate you all you don't know what you did! You all deserve to die! 

Jaune was scared for his life and (Y/n) looked his way 

(Y/n): You took everything away from me! 

You charged and Jaune but Ruby came from the right side and Nora came from the left with her hammer then they both swung at the same time but (Y/n) caught both of their weapons and they struggled to move them 

(Y/n): *Grunts* I'm not stopping! 

He made a huge Heartless and he made it slam both Ruby and Nora repeatedly until they were unconscious then it faded dropping them both 

(Y/n): Bitch boy..

You charged at Jaune again and he held his shield up and held his sword in his other hand and he felt a large impact hit his shield and it made him fall back then you stomp on his chest and held stabbed one Keyblade near his face scaring him 

Jaune: W-What do you want?!

(Y/n): A bitch until the end. You're a failure as a huntsman. 

You broke one of his arms and he screamed in pain 

Pyrrha & Ren: Jaune!

You looked their way and the heartless got in the way 

(Y/n): Hey who has two broken arms and is a total bitch 

Jaune: You're so stupid you only broke one of my-

*Crack*

Jaune: *Pained screech* 

(Y/n): This guy

Pyrrha broke through the horde of Heartless and she threw her spear at you but you simply caught it 

(Y/n): Pyrrha Nikos... Nothing more than a liar and a heart breaker 

Pyrrha: What are you talking about I never lied 

(Y/n) charged and they both clashed making a shock waves happen around them almost making his hood fall off Pyrrha struggled and was kicked into a building away from (Y/n)

(Y/n): What are you doing here?! I could handle this by myself 

Ace: I know but this wasn't your mission 

Another member of organization 13 appeared and she stood next to you 

Xion: Are you okay?

(Y/n): Damn it I'm fine let my finish them off, They will feel the pain they caused me! I will-

You were interrupted by a smack across your face from Xion 

Xion: This isn't you c-come on. You know what you have to do and you know what you are but being a murderer isn't you (Y/n)

The only person who heard that name was Ruby but her vision was sill fuzzy and her hearing was still off 

Xion took your hood off and placed her hand on your cheek but you moved your head away from her hand 

(Y/n): Fine, Whatever I'm going back to do my mission. 

You walked through a door of darkness to reach the abandoned warehouse and you looked around for the thing Ansem wanted you to find.

-Back at the street where you fought RWBY and JNPR- 

Ace: He did clean them up pretty good 

He looked around and seem them scattered and smoke but he shrugged 

Xion: What did they do to him 

Ace: It's a very very long story you need to ask him to understand anyway you need to find him he's the guy you got assigned by the boss man. 

They both went their separate ways and Ruby tried to move 

Ruby: (Y-Y/n)....You're still alive...? 

....Come back to us...

Then she fell unconscious again