Testing the magic

"I hope you don't try it at all," Marina muttered, though her tone indicated that she knew there was nothing she could to do stop her sister.

"Well, not right away," Nova said. She lifted Marina's hand telekinetically and sent a small speck of magic at her fingers. Immediately Marina's nails grew and were painted with a dark red polish.

"That's all you're trying?" Marina asked, a little surprised Nova would do something so small. "You already grew your own nails."

"Just another warmup," Nova said, making the same change to Marina's other hand. "Now, let's try something a little more involved."

This time Nova ran her hands along Marina's limbs; where they passed, tattoos of bouquets of roses, lilies, orchids and tulips were left behind, spiraling all along her arms and legs, flowers bursting at her elbows and knees, on her hands and feet, at her shoulders and crotch. Marina shuddered in disgust as Nova proceeded to feel up her torso, lingering just a little too long on her breasts, until her entire body was covered in delicate, detailed art that even the most skilled tattooist couldn't manage.

Marina appraised herself in the mirror. "I guess it's not as bad as having my body covered in smutty images. Still, you know what our parents think of tattoos."

"Marina, Marina, I told you, I'm far more powerful than Mom. As far as they're concerned this is something they approved."

"So you, what, altered history, altered their minds?"

"Something like that," Nova said, chuckling. "They'll think it's normal, but I can't actually alter anything that occurred before today. Just that nobody will question your suddenly having them, or why they look like you've had them for quite some time, no redness, no swelling, no sensitivity. Though the ink will never fade and only I can remove it."

"How did Grandma come to know about that ritual, anyway?" Marina asked.

"Oh," Nova said, waving a hand, "she told me because she'd done it, she was actually thousands of years old and learned it from her mother millennia ago. Don't ask me how she came to know it, she didn't tell me. All the evidence of the 'Willard bloodline' was actually just something she made up, inserting herself in different guises into the historical record. Easy enough to keep track of it all when you're basically a demigoddess with an infallible memory and thousands of years of history that you can alter at a whim."

"Like you'll be able to do some day," Marina pointed out.

"Some day," Nova agreed. She traced a few fingers up Marina's spine. "Eventually she decided to settle down a bit, had Mom, somehow she knew Mom wouldn't be the sort of person she wanted wielding the power like she could so she just never told her to avoid having both of us. And when she figured out that I would follow more in her footsteps than Mom's--Grandma left me her diaries as well, you would not believe what sorts of things she got up to, you name it, she was there having fun--she decided that I should inherit the true power of our ancestors and not just the ordinary power that Mom has."

"She let you cheat, in other words," Marina said.

"You think she didn't help Mom somewhat? Grandma still trained her, in a way befitting Mom's mentality. A witch without at least one of knowledge or experience is a danger to everyone, herself especially. So Grandma made sure that Mom, even if she didn't have all the knowledge, had plenty of experience with what she could figure out."

"So how long until you decide that it's time to settle down, then?"

"Not something that's really at the top of my list of priorities right now, to be honest," Nova admitted. "Besides, I might be gay, but even without magic there's still plenty of women out there who can knock me up. And with magic, well, that just opens up a whole realm of fun possibilities, doesn't it."

"Then maybe I'll get there first and it'll be my daughter who inherits the power," Marina said with just a hint of hope in her voice.

"Ha! Grandma told me you'd say that, that's why I've rendered you infertile. She only had one sibling, though, which made it easier. And it's why Mom's an only child. Thankfully, as I said, perfect memory, so I won't forget to repeat the procedure as necessary. No, the Willard bloodline will continue through me first, I promise you that. Grandma tracked down the branch families centuries ago and made sure the magic couldn't skip across the tree, so don't bother hoping for that either."

Nova's hands strayed across Marina's abdomen as she spoke, melting away a bit of her fat, not enough to make her look like a gym rat but just enough to make her look like she took care of herself and had just a bit of muscle tone.

"Are you making me into your sex fantasy, Nova?" Marina asked as her sister's hands moved up to cup her breasts and growth magic began seeping into those.

"You wouldn't be my sex fantasy unless I altered your mind to make you bi at least," Nova pointed out. "Which I might do anyway." Nova stopped Marina's growth when her chest wasn't too much smaller than her head. Crooking a finger, a drawer opened and one of Marina's bras, clearly altered to fit her new size, floated out, the tag showing that it was made for someone with a chest size of 34R.

"I thought you said you didn't want to make new clothes or alter my anatomy to support breasts this big," Marina reminded Nova.

"I'm not saying I'm going to leave you this big," Nova said. "But see, this is why I need experience. I knew I could change your bust size, but that's all I knew. I didn't know that just doing it would also change things like your clothes or, yes, your musculature. I could leave you like this and you'd have no physiological issues from them. And it should be the same if..." Nova trailed off as she let go of Marina's breasts, which sagged only slightly, and groped her sister's butt, which expanded substantially to match her new chest. More items flew out of Marina's wardrobe to show that, yes, all of her clothes were fitted for her new size.

"Well, that's great and all," Marina said, "but if you leave me like this, how will I get new clothes? Stuff this size doesn't exactly come on the shelf, you know."

"I told you, Marina, I'm not heartless." Nova began tracing her fingers lightly across Marina's face, shifting the bones slightly and applying what seemed to be makeup, though it was applied in a way that made her look extremely alluring. "Your clothes are completely impervious to everything and will never wear out."

"But what about when they go out of fashion?"

Nova waved a hand lackadaisically. "Just go to some place and pick out the largest stuff they have, it'll resize itself to fit you once you buy it. Won't even need to try it on, all your clothes are going to be the most comfortable you've ever worn."

"You sound like you've decided to leave me like this," Marina said.

"Well, that would be because I have," Nova agreed. "As I said, nobody else will think anything of you suddenly looking like an eminently fuckable sexpot." At those words Nova gave Marina barbell piercings in her nipples, three in her navel, and one in her clitoris, each applied so that, like her tattoos, it was as if she'd had them for some time, and adorned them with small dangling amulets. For good measure, she also gave Marina rings through her columella, philtrum, and the centre of each lip, each one tipped with a tiny, perfect diamond, and finally placed a barbell through the tip of her tongue.

"Now I look trashy," Marina complained. "And overgrown."

"I keep telling you, Marina, I'm a pervert, not heartless. Those amulets? They're enchanted so that people will perceive you as being extremely attractive and feel more well-disposed toward you and more willing to forgive any indiscretions on your part. Oh, and I did make you pan. You can have more fun that way."

"For your definition of 'fun'," Marina groused. "I bet you want to be a magical voyeur whenever I get someone into bed."

"Or whenever it's just you by your lonesome," Nova said, chuckling lewdly. She gestured, and the contents of the open drawer from which she'd extracted the bra suddenly included an extensive collection of lingerie and sex toys, the drawer itself becoming larger inside than out to accommodate.

"You know I could just abstain from any of that, right?" Marina pointed out.

"Sure, and I wouldn't dream of forcing you to have sex with anyone else. I'm not going to go that far, don't worry."

"You'll probably still **** other people to have sex with you," Marina shot back.

"Maybe, but those people aren't my sister whom I love as such," Nova reminded her.

"Some way you have of showing it."

"So instead what I did," Nova went on, ignoring Marina's retort, "is just make you extremely sensitive. You won't need to fuck anyone else, no, but you'll need to get off pretty often, and you'll get off really easily. Sometimes just from feeling your clothes brushing against your body."

"So what you really meant by 'indiscretions' was 'cumming explosively in public', then."

"Among other things."

Marina sighed. "There's really nothing I can say to convince you to just put me back the way I was, is there."

"Nope," Nova agreed. "I love you, Marina, and I want the best for you. The best as I define it, anyway, and that means that you'll get to rock a smoking hot body for the rest of your life. Oh, yeah, should've mentioned it, I made you immortal, too, and like me you'll stop aging in a few years once you've matured just a little more."

"Not everyone wants to live forever, Nova."

"I know that. Grandma decided to pass on eventually, after all. As will you, and as will I. I'll know when you'll want to move on, and don't ask now, it's not right now."

"Get out of my mind, Nova," Marina said tiredly, exhausted from having been caught up in Nova's whirlwind of erotic magic.

"But it's so much fun in there, the prim and proper side of you going to war with the fun and sexy side."

"Now that you've given me a fun and sexy side."

"No, now that I've given that part of you an outlet for expression."

Marina tried to put her head in her hands, but brushed a nipple as she did and moaned with the explosive orgasm that shot through her.

"See? Fun and sexy already. Now, as for me..."

Nova gently manoeuvred Marina back down onto her bed, before her witch's outfit vanished.

Confident in her abilities having tested them on Marina, Nova stretched and flexed, growing substantially taller and more muscular, her curves expanding well beyond what she gave her sister, her hair dropping down to her new shelf of an ass and turning a vibrant green. All her hair below her eyes vanished--she belatedly did the same to Marina--and she removed her need to breathe, or perform any other such biological functions, so that she could make her skin perfectly smooth. Finally, she ramped up her own sensitivity just as she had Marina's and let out an orgasmic scream of her own as she brushed a finger against her clitoris.

Nova floated back down to the ground, her outfit appearing back on her, resized to fit her new, larger body, her boots gaining an impossibly high heel while her face was permanently marked by makeup that looked even more like she was looking for a fuck than Marina's did.

"I take it back," Marina said. "You're the one who's overgrown and trashy."

Nova twirled a finger and a shower of magic dropped onto her. She grinned as she could tell that Marina was warring with two conflicting ideas in her mind.

"And now you look absurdly sexy, too. You're letting me see you both ways, aren't you."

"Yep," Nova confirmed. "I want any woman who looks at me to be thinking 'step on me mommy' when she sees me."

"I thought you had no plans to be a mother any time soon."

"It's a mindset, Marina."

The younger woman just rolled her eyes.

"Oh, and as I said, don't bother trying to tell anyone, you won't be able to, even if you could nobody would believe you since they all think this is completely normal, and I made myself exempt from actually following any laws, so it's not like anyone else could even try to do anything to me anyway."

"And you're completely immortal so someone couldn't just try to, well, you know." Marina mimed a gesture.

"Nope."

"I want to hate you, Nova," Marina said. "I feel like I should. You get magical powers and this is the first thing you do with them. But I just can't find it in me. Maybe I will later, once I've had a chance to recover from all this and get accustomed to the body you've given me. But, right now... I'd like it if you just left me alone. I know there's nothing I can say to get you to reverse this, or to save anyone else from what you're planning to do, so that's all I'm asking. Just something small and selfish. Just, go away, and leave me alone for now."

"And here I was just about ready to make you eat me out before that heartfelt plea," Nova said. Marina immediately sat up and shot daggers at her. "Thought that would get a rise out of you. Don't worry, I can get any woman I want into bed and make her look every bit as hot as you if I want. One less fish in the sea is hardly any great burden."

"Go away, Nova," Marina said, curling her new, hypersexual body into a ball on her bed and burying her face into a pillow. "You've done enough, to me, anyway."

"Well it wouldn't do to leave you without one last parting gift." Nova shot a bolt of magic at Marina's bed, and it changed, growing huge and spacious, the sheets becoming fine silk and the pillows multiplying.

"I said you've done enough, Nova," Marina muttered into her pillow, figuring that the witch would hear her anyway. "What, are you expecting me to have a harem now?"

"Geez, can't you accept a simple gift gracefully?" Nova shrugged. "I don't hear you asking me to take that one back, though."

Marina just whimper-grumped into a pillow.

With another shrug of her shoulders, Nova turned her new, huge, powerful body insubstantial and flew up through the ceiling of Marina's bedroom, shooting quickly through the attic and out through the roof, floating up until she could take in a few dozen blocks in all directions at once. Her senses, dramatically enhanced by magic, let her see, hear, smell everything around her at once. She soon spotted the next person she wanted to have some fun with and, after doing some fancy flying above the house just to get a bit of a feel for it, clicked her fingers and teleported right to her target.