Rainbow Dash Kills the MLP Universe

                A few months later

"Princess Twilight, we have bad news! Manehatten is wiped out!" a royal guard informed with a grim look.

"Fuck. Is there any other city or villages that can be saved? Any at all?"

"No, princess. Its just Canterlo-" a bullet went straight through the guard's head.

"Oh no. She's here" Twilight looked around desperately.

I know she's fast but how does she keep evade capture? Twilight thought. She has somehow managed to take out every city in Equestria and I think some that are not the Equestria as well. Trottingham, Las Pegasus, you name a city, she's taken down that city. It's impressive a single pony could do all that.

"Rainbow,  come out. I know you're there. I also know how you do things. If you're here, that probably means you already taken out the rest" Twilight gulped. "Of Canterlot."

"Hehe, that's correct egghead. Its just you and me right now" Rainbow dropped down from the above.

"How are you able to do it so fast? And no signs of regret or hesitations at all" Twilight backed away slowly.

"There's reason why you don't see me perform a sonic rainboom in cities.  I break the sound barrier, so there will be a major explosion. As for your second question,  the answer is you. You brought Rabidus into my head." Rainbow answered with a knife in her hoof. Gun presumably in her wing.

"Me? What do you mean?"

"For a egghead, you sure don't know a lot of things.  Remember that spell you tested on me months ago?"

Then it clicked. It was the spell months ago. It was the spell that she casted months ago.

"I'm sorry, but I can still help you. I can still get rid of Rabi-um whatever-you named-it of your head." Twilight said as she begun charging a spell that will knock anypony out.

Then she fired it. Rainbow was hitted and fell down to the floor.

"I am sorry for that. When you wake up, you will be normal again. Don't struggle." Twilight walked towards Rainbow.

Twilight walked closer and closer to Rainbow until she was able to touch Rainbow. But in doing this, she doomed herself.

"Surprise." Rainbow got up and stabbed Twilight in her torso. "You really think that I would just come here without any backup plans?"

"Any last words?" Rainbow asked.

"Yes, actually. Rainbow, I always wanted to tell you this: I always had a crush on you. But I guess that doesn't matter anymore.  You did it. Are you happy? You killed all the ponies in the Equestria." Twilight shutted her eyes for the final time.

"What?!" Rainbow was not ready for this at all.

Rainbow stood there for a few moments,  unmoving.

"No, there's one more left."

Rainbow took the gun of from her wing and aimed it at her head.

No, wait, what are you doing!?

BANG