You were about to sleep when your surroundings vibrate as a tear in the fabric of space-time is created, making a yonic-shaped portal in front of your bed.
With a firm thud of a boot, someone steps out of it, looking at you with a hint of nostalgia.
"I'm you from the future."
You sit up, because it feels weird lying in bed while she stares down at you. Then, she's way taller than you, so you stand up. "You're... me? Why do I look like this?"
She tilts her head to one side as she stares down at you with an amused but mostly benevolent-seeming smile. You're still shorter than her. "Well... it's complicated, but to put it at the most basic level: at a certain point in this timeline, my future self went back to turn my previous self into the robot you see before you so she could exist and also because she though it'd make you happier."
"Approximately now?"
She nods firmly. "Approximately now, yes." A syringe emerges from her finger, and she tilts her head to the other side. "Literally now, if you like?"
You stare at her for more than was probably technically polite, but it was your body here -- or, well, would be your body -- and she was basically proposing some sort of serious surgery or transmutation of some kind. Finally you realize she was pretty aware of your smirking, mostly because she was posturing to show whatever part of her body you look at better.
You clear your throat. "...well... it is a cute body... you'd say it's working pretty well for us, then? And wait, what happens if you don't turn me into the robot that becomes you?"
She shrugs. "I dunno-- I'm pretty sure you don't prefer getting to fuck with time and find out what happens over having a cool robot body?" She gestures to herself with a soft laugh. "Well, not if you're me, at least."
You have to admit that she makes a pretty and compelling argument.