Alternate selves have been confirmed to not be a thing that'll happen.
But imagine if they did!
"I should have just left it at the videos." The imposter growled at Sayaka. "Stupid fucking Homura and her stupid time bullshit..." Her voice trailed off. Sayaka's mouth dropped open. It was bad enough that this... girl... had come down on her like the fist of judgement in a back alley, but to look and sound exactly like her? That was going too far.
"Who! Who are you?" She managed between grit teeth, holding a sword in one hand in front of her. The first attack had taken her left arm off at the shoulder, and although the bleeding had stopped, it still
hurt.
"Who do you think, moron? Your evil twin or something?" The imposter twirled a sword casually in one hand, the blade still pinked with Sayaka's blood. "I'm here to help you, not that you would recognize this as
help really."
"You cut my arm off!" Sayaka shouted, only to have the imposter frown and shake her head.
"I helped you out, dumbass. Do you feel pain from the wound still? Do you even realize what you ARE?! Heal yourself! Your arm's behind you, against that trash can. Go put it back on, I'll wait. We have a long way to go with you and only a couple weeks until everything goes to hell again."
Sayaka glared at the imposter, and glanced at the severed arm laying a few feet away. The imposter seemed to have lost interest in her, poking at a discarded soda can with the tip of her blade, curling neat slivers of aluminum away from the whole. Backing up slowly, Sayaka grabbed her own arm and nearly vomited just looking at it.
'My own blood and bone and...' Forcing herself not to look, she tried placing the arm back into the spot it had come from, nudging the healing magic she'd used to close several other cuts in the direction of this massive injury. "Oh, for fuck's sake." The imposter was glaring at her. "You have to be faster than that! If you lose a limb you can't wait around like a fucking moron to put it back. The witches won't give you that time. The other girls won't give you that time. Kyouko sure as
fuck wouldn't, had she been here like she was supposed to today!"
Sayaka couldn't take anymore. "Stop it!" she shrieked. "Stop using that word! It's bad enough that you have my face, it's bad enough that you have my powers and are
stronger than me! Stop swearing!" Tears started forming in her eyes.
The imposter just looked bored. "You're worried 'bout a little naughty language, Miki?" Sayaka's eyes went wide, moisture still welling up. "Trust me, three... no, two more days? You'll see things you'll never imagine. You'll learn secrets that will
fucking break you!" The imposter's voice rose to a shout. "And the worst part of it is? IT'S ALL OUR FAULT! All of it! We didn't think that wish through, did we? We lost everyone and everything just for a shot at a boy who never loved us like we wanted! And then, when we find another person, a-another person who we can love!" The imposter's voice cracks slightly, tears forming in her own eyes to match the ones in Sayaka's. "And then we waste it! We waste our time fooling around and fucking-
fucking ice cream! She's
dead! By our hands, Sayaka! We had to kill her! And-and..."
Sayaka lost her grip on her sword as the imposter strode closer, grabbing a handful of her cloak and pulling their faces together. "I HATE you, you self-righteous pompous asshole." she hisses. "I hate you for everything you think you know. For what you think is real. F-for your love, and your compassion, and your,
your, my." The imposter staggers back, sword vanishing. "I'm such a fool." She mutters. "Such a goddamned fool."