Long ago, on a field trip, you and your twin sister, Uzi, were on a field trip for high school.
It was the same as most field trips, except this time, you all went to Camp 87.6 for a weekend in the wilderness. Everyone except Thad and Nicholas and Vee had been treating you two horribly, and recently, Uzi was going through something... You never knew what, she just got real secretive... Things were getting weird too, like if you two stared into a mirror, it shattered. And you always felt feverish lately... Eventually, Uzi pulled you aside, and told you about something called "Absolute Solver", which was involved with your mother, and that it seemed to be something that affects genes...
Needless to say, you both ended up blacking out... When you both woke up, most of your classmates had been cannibalized... by you two.
The two of you had these feral instincts, feral urges, but still retained most humanity... The Solver seemed to also transform you two...
You both realized that you could never go back to civilization... So here you two are, living inside an abandoned cabin.
While you do your own thing, Uzi comes in dragging a dead body.
"Ugh! This stupid camper took almost an hour to kill! I'm starving!"
She puts the body on the table, takes an arm, and takes a great big bite out of it, blood streaming down her chin as she chews.
"...What're you looking at? BITE ME!"