Kim Possible is owned by the Disney Corporation. This fiction is not intended as copyright infringement, but fanwork. Please, don't sue me, please.
Prologue: The wool over your eyes
"Hey! Shego!"
If there was one thing she truly believed, it was that "the only constant in life is change; and time has a way of changing people." She pondered this as she sat petulantly upon the stack of crates in the dim warehouse, ignoring the persistent bark of her rival on the ground below. The pale wood groaned and creaked almost inaudibly as she shifted her weight to cross her legs. She remained quiet, her attention barely retained by the magazine in her hand, chin delicately propping on her other palm, her elbow settling on her knee.
"Shego!" she was called a second time.
She dragged her eyes away from the magazine long enough just to glance at the challenger, quipping with a tone that implied disinterest, "Kim," before returning to her reading material.
Confusion was palpable in the air for a moment, and the girl below was silent. Hero extraordinaire, Kim Possible, adjusted her aggressive stance, easing one hand back to her side and giving her ginger locks a toss back over her shoulder with the other. She made an attempt to recompose herself, "Uhm," a beat of hesitation. "The hell? We gonna do this? Ron's foiling Drakken's scheme, so," she drew out the 'o', her voice trailing off with the implication that action should be taken.
Shego's eyes rolled with an exaggerated sigh, turning her head just enough to look straight down into the eyes of the younger woman, only flashing that typical, smarmy smirk for a second, "Such language, Kimmie. No. Not in the mood."
"I don't-"
"Don't! Care! if you don't believe me, Pumpkin," the raven-haired villain cut her off before she could continue, the statement finalizing, her tone sing-song, gaze cast back to the article resting in her palm.
There was another thrum of disbelieving silence, before Kim clenched her fists and jumped to the nearest crate, charging her way up the jagged incline, her reflexes allowing her to compensate for the instability of the growing-in-height towers. Once she was at the right elevation, she lunged across the gap between herself and her pale-green nemesis, kicking right past her to send the crate beside the woman crashing into another stack; a few tumbled down behind them, eliciting a huge crash. The redheads mane whipped around her neck as she spun to face Shego, standing above her hunched form on the next box over, eying the single-most-qualified person to duke it out with Kim fucking Possible. The Super hadn't so much as flinched.
"I'll be dipped. You're telling the truth," the younger womans fists planted firmly against her hips as she cocked her posture poignantly.
Her elder snorted softly at the use of "dipped". "In what?" she snarked, though it was halfhearted.
It took a moment for her to notice, but from this angle, up close, she realized that Shego looked tired, bags under her eyes, expression slack. This was... odd. She couldn't remember a time when Shego just looked "ordinarily" exhausted- like her mother when she had a long night at the hospital, or her father, when he was wrapped up in a project. Kim once again relaxed slightly, head tilting inquisitively, "Are you okay?"
Shego lifted a slender eyebrow, the other sinking as her eyes grew in size, turning slowly to look up at the girl to her right, clearly incredulous of the question. "Wh-what?" she chortled as she spoke.
Kims cheeks flushed and she crossed her arms, looking away, to anything, anywhere else, mortified, "Jeeze! Sorry I asked."
The older womans face eased a bit when she felt the wave of the youngers embarrassment, replacing her skeptical mask with her more trademark smirk, "I'm fine, Princess."
The ginger-haired heroine glanced at her rival from the corner of her eye, meeting her gaze, her own skepticism thick. She hesitated as her angry blush cooled, "Okay."
It only lasted a split-second, but their hearts leaped into their throats, hammering in their ears, mouths parched.
"Shegoooo!"
"Kiiiiiiim!"
The howls of their companions snapped the moment in twain, a small explosion rocking the facilities, causing the storage boxes to rattle and sway slightly. Each woman deftly made their way down without a second thought, splitting ways once they hit the floor, headed toward the cries of their individual partners.
Kim dashed out the double-doors she came in through, nearly crashing into her BFF-sidekick. Stumbling a bit as they grabbed each others forearms for balance, she looked into his dirt-smudged, freckled face for an explanation.
"I stopped him, but he got away! We gotta get outta here, KP!" the blond squawked.
Her non-verbal response was to take a grip on his wrist and make a break for the exit, walls crumbling around them.
Shego, however, had made a break for a ground floor window, looping around to a side entrance, to find her employer slipping out, "SHEG-EUACH!" She snagged Doctor Drakken by the collar of his coat, effectively ending his bothersome noise-making, and dragged him away to the hoverpod outside, letting him trip and stumble backwards behind her.
As each pair made it to safety, Shego piloting the hoverpod above, Kim pulling out her communicator from her pocket, they glanced (up and down, respectively) to one another. Shego mouthed, "thanks," before jetting off to escape ahead of the heroes help arriving.