The shapeshifter didn't take much effort to slink into his apartment. Its fingers flowed into the lock, pushed the pins and twisted the tumbler. Silently, the door opened. The only thing moving down the dark hallway was a humanoid blank canvas. It was a colourless figure, a broad brush stroke suggesting female, lacking any details to bring it to life. Moving silently, they stalked the house. Sweet scents of their prey's fantasies guided them to the small room, to the figure hunched over at their computer, writing a story he'd never go back to because the mere association to this night would be too much of a distraction.
His desires were written like a scratchy shopping list. Some items were clear, thought about for months or a regular occurrence in his fantasies. Others only appeared after the shapeshifter had probed for them, in chicken scratches. If you knew how to read the wild and unruly handwriting, the shorthand terms only the mind could understand, and separated the wants from the needs, it was easy to go through and optimise. The shapeshifter was a master at sieving for the lust in someone's head. Instinctively they took the list, created a shape, a personality. Not a single conscious thought covered the process, so the end result, whatever felt natural, was a surprise to even the shapeshifter.
She was now Erika. The name was a natural thought, as if it was always there, even if nothing else was yet. It would sound better out loud than in her head. Especially from him. The initial shift hit the hardest, always left her wanting the most. A shapeshifter had to be perpetually aroused, always ready to take a target when the opportunity arose, and that created a new baseline for spikes of arousal to rise up from. Her form shimmered in anticipation.
His progress with the story had reached a lull. No combination of words sounded right. The sentences were basic. The sentences were boring. The sentences were repetitive. Writer's block had stacked into a fortress preventing all progression. Tom sat there, staring at the page, waiting for a new burst of inspiration to hit him. Any second now...
Something moved in the corner of his eye. After being blasted by the pure white word processor, his eyes were in no hurry to adjust to the dark of the rest of his room.
The shapeshifter doesn't have a natural speaking pattern. There's no need to, because the shapeshifter doesn't really exist to anyone but itself. But Erika had a speaking pattern, a natural voice that was a part of her. And Erika was more than happy to use that voice, especially for him. "Hey!"
Tom jumped and locked onto the voice. The cute, feminine voice, with just a hint of a giggle behind it, like she had noticed something unkempt with his appearance. He looked harder into the dark. It took a lot of focus just to catch the two eyes staring back at him. Two big, bright, blue eyes, catching the faint light so beautifully he found himself staring. The eyes got closer. The light off the monitors outlined a vague, faint figure.
"Call me Erika, 'kay Tom?" she said with a wink.
Erika's eyes grew bigger and brighter. The way they grabbed his attention was already so delicious, it was easy to let her natural instincts take control. She inched towards him, taking inches out of her height with every step, until she compressed down to under five feet. Her skin settled on a white-pink tone. Now she was a doll-like body, a rough outline without any details. It was unbearable to be so plain for so long.
She leaned forward, putting her head into the light, shaping it as she did. A heart shaped face with a cute button nose. She pouted and her lips turned glossy pink, grabbing the pure white light, begging for his attention, before pulling back into a smile to flash her perfect teeth. Darting eyes recorded his reaction. First at his face; his eyes widened as her appearance appeared. Her own eyes rolled up for a moment as she felt his approval, then flicked down below the belt; the dawning realisation that she was already getting a reaction behind his jeans put a wide smile on her face, like she'd just seen the waiter bringing out her food from across the restaurant.
"Got a type?" Her eyes narrowed, and her wide smile turned into a smirk. "Everyone's got a type." She raised one finger and tapped her temple. Colourless hair burst straight up from her head. By the time gravity took hold of the strands, several colours had shot through it, from natural blondes and brunettes to extreme dyed colours. The shapeshifter studied Tom's reaction to each split second snapshot of a hair colour. When the hair fell into a shoulder length, wavy hair style, it was pastel pink. At the last second the roots saturated into a slightly darker pink, putting a smooth and consistent gradient through every single strand of hair. The locks of hair danced like a rubidium flame test as she pulled her head back into the darkness.
Tom stared in amazement at the spot the figure was standing in. The perfect face was fading into the void, aside from the bright eyes and lips which refused to be taken by the darkness. He wanted to move closer, to see more. His office chair had wheels to roll on. His phone was on the desk, and it had a flashlight. Even a little turn of the monitor would show more of whoever was in his room. And yet he couldn't move. If he did, he could confirm it was all a dream and it would fade away. So he sat there, enthralled by the woman intruding.
She reached out with her vaguely humanoid hand. Once it crossed an invisible boundary, it shifted, becoming a dainty, delicate hand with small, precise fingers. She twirled it around, wiggling the flexible fingers to as far as looked normal, inspecting it herself. Brow furrowed, she complained, "Hands are always so tricky." Minute changes, too subtle to notice in the low light, flowed across her hand, smoothing and massaging the flesh to sculpt every part of herself to perfection.
Tom had nothing to reply with. He kept watching with curiosity, a silent bystander in this dream. Moving could be seen as threatening to leave or run, the opposite of what he wanted. So he sat and watched everything with all his attention. It wasn't uncommon for the shapeshifter to take control, but this was a different sort of reaction to her prey making a move. Erika would be controlling the pace of tonight. She knew he wouldn't move
"At least the hard part's out of the way!" She celebrated with a smile, which morphed into a giggle when she thought a little more about what she said. She licked her lips and looked down, "Seems like your hard part is still gettin' started." Her body continued to slender up her arms to her shoulders, matching the finesse of her fingers all the way down to her legs. Redrawn as someone more lithe, she shifted the weight from foot to foot, twirling her finger about. She took his attention to her fingertip and pointed at her own eyes, now backlit by bioluminescence.
"So, what are we gonna do?"
The only response was an incoherent mumble. Inside his head, at the opposite volume, was a siren of screams and exclamations, equally incoherent.
In the seconds where their eyes met Erika toyed with the idea of pouncing at him. Her head lolled to the side, tilting naturally, as they stared into each other. He saw two bright blue eyes. She saw an ocean of ideas and expectations to plunge through. Tom the passenger was in shock and anticipation, expecting every moment to be the one where the dream crumbled like the ground on an old hiking trail, ending up with him on the floor and longing for where he was before. The fear of fragility, the concern of it all ending, formed like an island in his head. She flashed a cruel, cheeky smile.
Erika shuddered in excitement as the process began. She felt hot - overwhelming so. Like she was burning up from the core. Loud, feverish panting followed, outstretched hand bouncing with every breath. She balled her hand up and brought it against her body. The burning became an unsettled fizzing and churning inside. Despite having total control of her anatomy, the shapeshifter knew very little about it. Erika took solace in the fact this feeling was natural for her kind, and that this turbulence would result in her getting what she wanted. All Tom got was a silhouette of this beautiful girl having an apparent breakdown, all with a maniacal smile on her face.
The phoenix was reborn. The light off the monitor body framed herself for her prey. And to get her prey, the current lack of contours and curves to catch the light was unacceptable. A slow burning fired downwards, into her legs. From the outside, instantaneously her hips flared out. Her thighs grew to fit her flare, before she turned sideways and popped her ass, filling it out to match the huge thighs that would've looked outlandish on her frame in anything but a fantasy. Turning straight again to show a stomach tucked flat, a slim waist, and a hard V where her stomach met her thighs. It was too dark to see what he desperately wanted, what finally got him to inch forward to peer into the light. In a way she helped him by taking a step forward. But the Shapeshifter noted how Erika would always delay being helpful, and panties weaved themselves into existence over her crotch. A knot on either side tied low and tight to demonstrate how soft and plush her thighs were. One firm tug was enough, if she allowed it.