Sibling get-together

Deciding she could use a better view she walked over, plopping down on the nearby sofa. She sprawled back, raising a leg to give her sis a full peek at the raging erection underneath her pants.

"Why don't you join us sometime?" She said, her voice throaty and deep with lust. She reached out with one hand, lazily stroking her dick through the thin fabric, staring blatantly at her younger sister's exposed pussy.

"We've got more than enough dick to go around..."

"Well, yeah, I think I knew that already" Lizzie said, eyeing her sister's rather perversely stroking fingers with something like mild curiosity. She seemed so unabashed at her own exposure, so un-fazed by Karis' porno-fied body that Karis almost thought Lizzie was unaffected.

Except... the booty-licious red head had this growing tinge of warmth to her skin and obviously her pussy drooled with viscous creamy arousal. She was having an effect, less obvious than others might show but the combination of Karis' horny visage as well as Lizzie's own voyeurism was finally breaking down those barriers.

Not too mention how thick the air was growing with the pungent filthy pheromones that Karis gave off. She'd become largely used to the smell (her room was a awash with the stuff) but as she sat she could tell the room was getting thick with her virile musky dick...

+large nipple bulge +defined detailed abs +tight stomach

Karis hummed loudly with perverse enjoyment as she watched her sister's slim tummy grow taught with bulging muscular pockets. She stroked her dick through the soaked leg of her pants even as Lizzie stood across from her, staring straight at her with that same mildly disinterested look. The way her chest rose and fell, the tinge of lust in her cheeks and the way her molten pussy still dripped sticky effervescent fluids... Lizzie was just as turned on as she was.

The moment stretched on for a few more seconds, a growing... something, between them as their eyes lingered... crawling slowly across their slutty counterpart.

Karis was just about to suggest something when the soft patter of feet could be heard in the next room.

"The Fuck Karis, why'd you have to leave me like that?" The boy moaned from the down the hall. "My ass fucking huuuurts..."

Rounding the corner at the bottom of the stairs he stepped in, his ridiculous tits and dick jiggling and pointing the way. He'd thrown on a shirt but it was clearly not enough. All of him swung wildly as he planted his hands on his hips and growled with frustration at the slutty futa on the couch.

"My ass hurts like you fucking shoved a jackhammer in there-"

"I basically di-"

"Then I'm fucking sticky everywhere because you kept just jizzing over everything! Your fucking firehose of a cock wouldn't stop fucking cumming!?"

Karis shrugged as if to say "what can you do" which only made Luke's drowsy eyes squint in further fury.

"And now I have a fucking splitting headache cuz the only fluids you passed on were the several gallons of jizz you fucking poured down my face!"

"So get a drink."

The two turned towards Lizzie who had apparently returned to stretching, fully used to the bickering Luke could dish out. Noticeably Luke's eyes darted from her face to the slit of her pussy still steaming hot and exposed. The pose was... revealing, almost like she was begging to be fucked. Still, besides the blushing (and the steaming hot pussy) there was no indication of anything but pure disinterest from the youngest sibling.

Luke continued to watch her for a moment longer, a look of consternation on his feminized features until he seemed to finally come to some conclusion. Turning around (tits and dick jostling wildly) he went to the kitchen to do the same Karis had some time ago.

Karis debated turning her phone over towards Luke again but then she got one more idea, brought on by Lizzie's current pose and the way her feet were playing in the thick carpet.

+erogenous feet +flexible toes +uses her feet like her hands

Less noticeable of a change than most things Karis had done up till this point. A marginal shift, her feet, planted on the balls now twisted to and fro with expert control, her toes grabbing at the carpet as she stretched her raised ass and long legs. Interestingly the added sensitivity had caused her blush to redouble, her swimmingly warm pussy to drip just the slightest bit more.

Karis was just trying to judge if she had any more ideas when Luke returned, a glass in one hand, he stopped again in the entry, frowning as he saw Lizzie in her exposed, almost wanton position. What with her pussy out still. Karis wondered at that, like she hadn't exactly prompted for her to expose herself and before all this she definitely wouldn't have and even Luke seemed to agree that this wasn't normal going by his expressions. But still, something about the situation in combination with her changes must have made her act like this? She couldn't tell...

"Hey Luke, can you give me a foot massage?" Lizzie said in her usual toned as she shifted again, twisting her ridiculous hips, presenting her pussy to the world in a new posture.

Luke grimaced for a second before his expression shifted to something like acceptance.

"Fuck... I mean I guess, fine..." he growled as he walked over (stomped more like) his whole body quaking with every step.

Karis frowned through the whole exchange, watching as Lizzie moved to the couch, still just as impassive as ever as the stacked femboy got down on his knees to start rubbing the dexterous feet before him. It felt... off, something out of character for her siblings both before and after... unless?

Karis guffawed, realizing with a start what had happened. Pulling up Luke's prompt

Does whatever his sister tells him to

Apparently specificity was a thing... then for Lizzie...

She glanced over, watching the placid girl getting her feet rubbed and teased. Still she refused to give off any hint of what she was feeling. She was getting off on all of this, the teasing and now this, her feet were an erogenous zone so given time she might actually get off... She was taking advantage of this power Karis had inadvertently given her over the eldest and from the nonchalant way... she did this often.

The sneaky little freak!

Karis smiled, hand idly stroking her dick as she watched.