Harper narrowed her eyes, tail lashing her sides as she held her crouched position, scanning Parker from head to toe, awaiting her next move.
At the same time, Parker was analysing Harper, her body language far more open and far less defensive than her sister's.
"We don't have to keep doing this, Harper!" Parker called up to her, opening her arms wide. "Let's just- call it quits and grab some piz-"
"Stop calling me that. It isn't my name," Harper snapped, tightening her grip on her knife. With that, she leapt down from the ledge, the knife pulled back and ready to stab her sibling and adversary.
Parker stepped back, holding her arms in front of her body in an attempt to block the oncoming assault. Without missing a beat, Harper lunged forward, dropping into a crouch at the last second and making a sweeping motion with one leg, aiming for Parker's ankles.
Parker leapt up over her leg, kicking out herself and aiming for Harper's face. Quickly regaining a standing position, Harper grabbed Parker's ankle, pulling back and upwards, sweeping Parker onto her back.
"Fuck-" Parker barked, rolling away just as the knife was brought down, narrowly missing being stabbed in the face. She hopped up off of her hands and knees, ducking back and avoiding having her abdomen ripped open with a decisive slash.
Taking her narrow window of opportunity, Parker latched onto her sister's wrist, yanking her forward and using that forward momentum to push her over. Harper dropped to one knee, spinning and sweeping her leg at Parker's ankles again, this time successfully knocking her over.
Pressing her palms into the gravelly rooftop, Parker pushed herself up and forward, simultaneously kicking out at Harper with both feet. Her boots made contact with her chest, knocking the wind out of her and sending her tumbling back with a comical wheezing, snorting sound.
Harper paused, lying on her back with a startled, pained expression.
Parker picked herself up, brushing herself off with a tilted head.
"Harps...?"
"What the fuck did I just do-"
"We've been fighting for two fucking hours, Harper!"
Harper picked herself up, narrowing her eyes.
"Wait... I remember-" Without any sort of warning, Parker lunged at Harper, wrenching the knife from her hand as she slammed her into the rooftop.
"GOTCHA-"
"Parker what the FU- hurgh-" Her words were suddenly cut off by a loud gurgle, blood bubbling up from her esophagus as her throat was cut by her own knife.
"Forget everything," Parker smiled, that demented grin on her face now. She had slipped into another one of her bloodthirsty fits.
Harper scrambled back, one hand clutching her throat in a futile effort to contain the crimson fluids spouting from the wound in her neck.
"Nononono- you're not getting away!" Parker giggled, standing and following after her.
Harper paused, her hand suddenly touching something smooth and cold, which was a stark contrast to the unforgiving gravel that had been cutting into her palm mere seconds before.
It was a skylight.
In a last ditch attempt at escaping, she drove the heel of her boot down hard on the glass surface, hoping to break through and land in the burning interior of the warehouse beneath them.
"NO-"
Just as Parker realized what was going on, Harper's foot plunged through the glass, sending her dropping into the abyss below.
Or so she had hoped.
Just before she was able to drop through safely, her sister had dove forward, grabbing onto her forearm.
Harper panicked, her eyes widening in sheer terror as she looked up, Parker's smiling visage spattered with her own blood.
"You're not leaving!" She laughed, beginning to haul her up.
Harper flailed, pained gurgles replacing the enraged screams trying to escape her throat.
Then, something dawned on her, something so entirely outrageous, the fact that they thought had even occurred to her scared her more than the very real possibility of being stabbed to death by Parker.
She twisted frantically, grabbing at the knife tucked in her boot.
Then, before Parker could react, Harper began sawing at her own elbow, something like the sound of a drowning animal bursting forth from what remained of her slashed vocal cords.
With a few gut wrenching slashes, her arm was held together by nothing more than a few ligaments, and her skin turning a shade of pale, ashen grey.
Parker tilted her head, a small smile twitching at the corners of her lips as she held onto her sister's arm, watching the events unfold with a curious air.
Then, with one last swipe, she was ripped free of her appendage, dropping into the flames below.
Parker paused for a moment, tilting her head as she eyed the severed arm in her hand.
"Oh. Oh- OH GOD-"
Reality kicked in for her in that moment, and she backed away, her face a mask of horror as she dropped the limb.
