Karyn rolled their eyes. "Yeah, well, you know what, Vex? I've just realized something important: I am way too tired to deal with this shit right now, and we have school tomorrow anyway. Let's just get some sleep and figure out how to deal with this tomorrow, okay?" Karyn tried walking them away from the mirror and back to bed, but Vex seemed to have other ideas.
"Aw, c'mon, sweetheart, I haven't even shown you anything cool yet!" Vex protested, with a mischievous smile on their face.
"You've shown me quite enough for one night," Karyn complained icily. "It's been a rough enough night as is."
"Hum hum, I do see you've not been sleeping well tonight, on account of your new looks..." Vex said, once again checking out Karyn's body in the mirror. For a moment, Karyn was struck with the realization that Vex would learn about the stone shortly and gripped by a sudden fear of what she might do with it, but if Vex read those thoughts, she didn't seem to be interested. Instead, she giggled mischievously with Karyn's voice, fixed Karyn's gaze on her reflection, and said "Watch this, sugar!"
Karyn could scarcely believe what she saw next.
A familiar red color sprouted from the roots of her hair, flowed from scalp to end, and turned it from the new blonde to the old red, curling it and shortening it as well to match her old style exactly. By the time Vex was done, only a few blonde streaks remained in evidence that anything had happened to her hair at all that day. And her breasts, too! Karyn gasped in pleasure at the lewd squeezing sensation as they shrank back down, shrank to match her old smaller size exactly! No, wait, not exactly: they were still a little bigger, but it would take a very keen eye to see the difference. "Ta da!" Vex did a little pose with Karyn's body, now almost an exact replication of how it was before.
"Whoa...." Karyn's eyes went wide at her reflection. It's almost perfect! she thought.
"It would be perfect if it weren't for the irreversibility conditions on the magic that gave you these looks," Vex said, playing with one of the remaining blonde locks of hair. "Powerful magic, that is, but there's enough leeway for me to work with, though~."
Karyn had no response but to stare. She can do that!? Who is she, really!? she marveled to herself.
"Truth be told, though," Vex began, apparently heedless of Karyn's wonder, "I've been looking at this body for a while, and while it has its charms, I won't deny there's room for some... improvements." Just as quickly as they had shrunk, Karyn's breasts suddenly ballooned out to their huge size once again, with such sudden pleasure that Karyn had to stifle a moan.
"These hips, for one. They're alright as is, but I say, if you're gonna have some, big, sexy tits, you may as well match them with a big, sexy ass~." Karyn felt her hips start suddenly to widen, and her butt start to inflate into a lovely, heart-shaped and smackable bubble, stretching her panties and her pajama bottoms tight as it did. Karyn gasped again; the sudden tightness in her panties was forcing them to rub against her still-wet pussy. Vex...!
"Of course, to make that work best, you've gotta have a nice, thin waist, and some delicious thighs for the boys to ogle, too!" Karyn was already a fairly thin girl, but any belly fat she might have had disappeared instantly, leaving behind a perfectly flat, supermodel's abdomen to shrink down with he rest of her waist until she was sporting a curvy hourglass figure. At the same time, her thighs were plumping up, and her legs were getting shapelier. Karyn was admittedly not in the habit of shaving her legs as often as she should, but something told her she wouldn't have to worry about that anymore. Karyn was panting now. Wait, Vex, slow down!
Vex had no interest in slowing down. "And let's not forget the prize of any woman's outfit: long, silky, sexy hair, just wavy enough to cascade, but not curly enough to knot into a mess..." Karyn's hair grew out so long it almost reached her lower back, it's color changing to a much more luscious, fiery red-orange punctuated here and there by golden blonde streaks. Vex, really! You're going to ruin my clothes, at least! Karyn protested, still teased by the sensation of her soaking panties pressed up against her clit and rubbing with any motion of her lower body.
"Oh, am I~?" Vex asked with a giggle. "Then you might be interested to learn that I have some influence over my host's clothing, too, sugar!" In an instant, Karyn's pajama bottoms were gone; in their place was pantyhose and form-fitting fishnets that left little to the viewer's imagination. Vex had also deliberately made her panties an even tighter fit to tease Karyn a bit more; though, "panties" wasn't really the most fitting term anymore, as they'd become a small, lacy little number, not quite entirely see-through, more befitting of a stripper's lingerie than casual panties. It didn't look in the mirror like anything had materialized to cover Karyn's upper body at all; though Karyn could feel what were probably pasties covering her nipples, and on inspection noticed that these were somehow keeping a few locks of hair covering those pasties at all times.
Vex, c'mon! Above her arousal, Karyn was starting to get legitimately annoyed that her headmate wouldn't listen. You're just making me look like a slut, you show-off! Change us back; we can't go out like this!
"Oh, we won't, darling..." Vex's voice suddenly grew lower as new changes overtook Karyn's body; it somehow sounded more like that sultry, seductive voice in Karyn's thoughts. "This isn't for you or for going out, honey. It's for me." A pair of large, red-and-black wings sprouted from Karyn's back, and a slim, serpentine tail made itself known, writhing around from behind Karyn. "Few mortals will see me like this," Vex explained while looking straight into her reflection's suddenly heart-shaped black eyes in their red sclerae, "but I'd like a form of my own for this world. Something that suits me better than some typical mortal body." Vex had by now begun to float weightlessly off the ground and recline into a pose at once more comfortable and more sexy. Nail polish and other makeup had appeared as if from nowhere and some black, curving ram's horns had sprouted from her head, but more amazingly, Vex had literally begun to glow. Runes in some script Karyn couldn't read appeared as tattoos, glowing red and (somehow) glowing black, densely covering her skin in places: they sleeved her lower arms and lower legs beneath the fishnets, and appeared as an elaborate seal below her navel.
Karyn, gaping internally, was utterly transfixed. Not until now did she truly appreciate that this was a succubus, some powerfully magical eldritch being that could and did do as it pleased, and which her measly body just so happened to be a vessel for. And dammit, she was gorgeous! Even aside from that supernaturally curvy, exquisitely beautiful body she had just transformed for herself, there was something about the glow around her that grabbed Karyn's attention and held it; she couldn't have looked away even if Vex allowed it. She could barely even think anything that wasn't some gawking thought at the beauty she'd just become. All she could do was shudder with blank horny pleasure while Vex giggled at her.
"I'm glad you like it, sugar!" she said in that low, sultry voice of hers. "You wanna see another magic trick?" she added with a playful wink. Karyn didn't answer; inside, she was still just gawking and ogling Vex's new body. "You may now climax for me," Vex said dismissively. And just like that, a sudden orgasm overcame Karyn's and Vex's shared body, blanking Karyn's mind with pleasure while Vex just laughed through it.
