Magical girl Jan

So, what I'm thinking is that maybe you could try out all your abilities and tricks on me right now? What would that be like?

You blinked, thinking about what 'tricks' you might be actually capable of. Jan was really willing to get to know your ghostly self, at least, that was a good sign. It meant she probably wasn't going to build up any willpower to expel you if you did something too bizarre with or to her, which means you likely had free reign to do as you wanted! That said, knowing what that might entail still wasn't well known.

"Okay, so you want me to just try things out on you? I've literally never done anything but float into your body and take over, I'm pretty sure I can do a lot more but you're okay with being a bit of a test case?"

You felt your body shudder a bit, as Jan seemed excited by the unknown potential. Y-yes, please... show me your abilities.

You shrugged, and tapped on your chin, ignoring the delightful sensations of the water as you stood in your naked neighbor's body, lost in thought. "Alright, well, let's start with some obvious ones. I'm going to give up control for now, so I can focus on this stuff, I'll take it back later. So, you can finish up the shower, assuming we don't end up too distracted!"

You seem to just draw all your ghostly limbs inward in the body, and you could feel Jan gasp as she felt control of her own body return. She braced herself on the wall, before taking a deep breath. "A-anytime you would like, John, I'm ready." She let go of the wall and started to focus on the shower for a bit, taking her braid out--something you didn't even really think to do on her behalf--as she started shampooing her hair.

You thought it would be more fun to not tell her when and where you were about to do anything. Your first target was pretty obvious, however, as you oriented yourself in her body. You could move your spirit around, but it was still present in the physical structure of Jan, so if you twist or turn, it caused Jan to twitch or stumble lightly. One particularly aggressive shift of your ghostly matter in her waist caused her hips to shake to the side, surprising her a bit, but Jan kept up her work at cleaning herself up.

You could feel her body in ways that were hard to describe, 'seeing' her from within as a malleable plaything. You reached out with energy, as it felt like you were pushing your hands outward, at chest height. Your effect was quickly realized, as Jan looked down with a yelp, seeing her chest growing a new cup size with each passing moment! She responded by actually trying to wrap her hands around the breasts, to contain them, but you were too busy testing your limits, just as you promised you would do--all Jan ended up was rubbing against flesh that was growing ever more sensitive the more of your essence filled into them!

You stopped briefly when you reached about the same size as Jane's breasts, and Jan eventually let go. "Uhh, w-wow... you can change my body so easily? This looks, uhh..." Jan had trouble containing her excitement as her hands clasped onto her chest. "I've dreamed about what this might be like, to have a body shape like your fiancée, I never thought I would actually experience it."

You said nothing, but you weren't simply going to idle! Instead, you moved your essence around, causing Jan's newly formed breasts to bounce and jiggle by some unseen ****! She yelped again, at first letting her chest move like she was running or jumping or being groped by another, before she actually did try to calm you down with her hands. But all she discovered is that your motions were not easy to slow, you were pretty powerful and able to resist her firm grip with relative ease! Aided by some slippery shampoo, you kept sliding out of her grasp, running her nipples along her palms each time you escaped, causing her to moan each time.

Before she could squeak out a request for you to stop, you kept pushing inside, and her breasts once again began to grow. This time, however, you didn't plan to stop until either the body couldn't stand it, or you ran out of energy! And what you and Jan simultaneously discovered was just how stretchy a ghost made their host... Jan quickly lost the ability to even wrap her arms around her breasts, and before long the size of her boobs was barely contained within the perimeter of the shower. In fact, had her chest been as big as they were now, each almost the size of another person, she would've struggled mightily to even get inside the shower! The chest conformed to the empty space, and soon Jan realized she was stuck, unable to move around from the breast mass that pushed up against the glass door. Water from the shower began to pool into her cleavage, as it had few other places to go.

"O-okay, John, that's pretty ****..! What about something else, could you change my chest to something a little smaller and then change something else?" Jan asked, wide-eyed as she looked down at her expansive flesh. You decided to change things up, indeed dialing the breasts back again. Despite the fact that you had felt more comfortable in Jan's body with her A-cups, you couldn't deny there was something beautiful about some larger breasts on her frame... you brought them down to a D-cup, which was large but manageable. Jan happily ran a hand along those, smiling a little as she soaked in the sensations of her chest. At least, she did until your next change! Her stomach began to swell, as you had pushed more of your ghostly energy into her womb, this time deciding to see how Jan might look were she nine months pregnant! Jan gasped, grabbing at the larger belly, although it felt light, unlike how an actual pregnancy might. Even so, the reflection was again unmistakable, she looked like she was about to have a child.

Jan saw this change, and something sparked within her. She couldn't hold back as she found herself so aroused by your ability to manipulate her form that her hands slipped past her large belly to feel between the legs, needing some release! Of course, you weren't done, not by a longshot. Her stomach began to deflate again, back to its firm, toned shape she was familiar with, but she had to spread her legs wide when it felt like there was something filling her vagina up. Her eyes wide, she looked down as her hips started to thrust instinctively against whatever this intrusion was, but it was not at all what she expected. She looked down to her pussy lips, and there wasn't anything there--not at first. This shoving sensation, Jan realized, was not from something on the outside pushing in, but on the inside pushing out, and her eyes widened as far as they could go when her folds parted and she could make out the slightly transparent tip of your ghostly dick, as you thrust from within her body. Really, what you were doing was possessing her vagina and making it seem like your dick was solid, but it was a pretty good illusion! Jan covered her mouth as she stifled her squeals of both joy and surprise.

Soon, Jan began to shudder, as you were really turning some dials now! From inside her hips, you had access to every little thing about her, even though you didn't really know how to orient yourself you were pretty good at just feeling around until you started getting a new response. Jan started to orgasm, bracing against the wall as she cried out in pleasure at everything you were doing, but once you found all the little bells and whistles that made up Jan's climax, you immediately put your energy into those body parts, and soon you were able to control her orgasm completely! You increased its duration, made it hit her wave after wave, tweaked its intensity up, and so on. Jan lost all ability to be coherent as her body was rocked by your teasing, her mouth hanging open and her eyes rolling up as she slid down the wall of the shower, sitting naked on the ground as her body continued to convulse at everything you did.

With enough exploration inside her, you realized you had a lot of control over bodily processes typically considered automatic. Any sort of chemical or hormone inside her, you could stand in for. You could make Jan feel hungry or full, sleepy or wide awake, incredibly aroused or devoid of any sexual energy. Her emotions were at your command--you could eliminate the butterflies in her stomach, or inspire her to laugh at nothing at all. You could poke small regions in the speech center of her brain, and make Jan blurt out random words. In essence, from within, you could rewrite Jan entirely.

"P-pl...lease..." Jan eventually said. "Take... me over... again..." She was exhausted from all the toying and teasing you had done in her body, but all of it stemmed from your influence, and she wanted you once more in charge, which seemed to excite her even further to have her movements dominated by you. You gladly obliged, forcing energy back into all her limbs with a sudden jolt. With a gasp, you were back in control, and you tweaked things within her body even while you were in charge, wiping away her exhaustion with ease.

You smiled, looking down at yourself again. "That all felt so good! I've gotta be honest, Jan, your body's really incredible." You looked at your hips, deciding to expand the hips and ass a bit to go along with the larger breasts. At this point, why not? You were more and more committed to 'sexy Jan' at the moment, and you could adjust her later when you wanted to be more comfortable. "I guess I can do just about anything I want to your body, huh? Inside and out. But, I'm pretty sure my abilities don't end there."

To demonstrate, you held your hand out to the shower controls, turning your hand without actually grabbing anything--and the knob turned in kind! The water shut off, leaving your new body dripping. You reached out toward the towel rack nearby, and the fabric began to unfurl, a towel drifting over to you in midair, before it starts to wrap around you, drying you off hands-free.

What is going on? Jan asked, utterly confused. You're magical, too?

"Well, not quite. Or, maybe? I don't know," you said, "but what I do know is that this is pretty typical ghostly stuff, yeah? Ghosts can influence electronics or knock stuff off shelves in addition to possessing people, I figured why not try and do it while I'm still in you? I have a pretty strong energy field, I think. I could easily maneuver some light items around. Here, watch!"

You opened the glass door on the shower stall, stepping out into the bathroom proper, before heading into the bedroom. The towel had dried off most of your body already, and as you walked into the bedroom, you seemed to just point at drawers, which opened up to reveal all kinds of fabric. As you wandered through Jan's bedroom, panties and a bra filled themselves out, taking shape--and then overextending their shape to an exaggerated one to match Jan's body how it had become--before they darted to your form, slipping under your feet as you stepped and sliding up your legs or clasping around your torso without interrupting your exploration of Jan's wardrobe. A button-up blouse left the racks, also inflating to a proper size before it began to slip over your arms, and some jean shorts flew out of the closet, seemingly nipping at your heels as you stood still. To help the shorts onto your legs, you lifted your whole body up into the air, using your ghostly essence to drift up a few inches off the ground! The shorts, then socks and shoes, slipped on your feet, tying themselves.

Not that you wanted to do any walking. You 'sat' in the air, crossing your legs as you appeared to remain perched on an invisible bench in midair, smiling a little. Jan remained flustered in your mind, but you were surprisingly calm about everything you could make your new body do, and how you could influence your surroundings. It's almost... superhuman, what you can do to me, John. It's incredible. You could make us like a real-life sorceress or something... you could just, uh, take over and live my life with these incredible powers..!

Now there's a thought, and it seemed to excite your host immensely. The idea that you could steal her life and behave like a powerful magical being, using your astral abilities to influence the real world... you could do whatever you'd like to Jan's body, you could use it to do things to your fiancée, or you could just go it alone for a while and start anew briefly like this! Hiding as Jan in her normal form, or rewriting her existence in any natural or supernatural way you wanted, had a ton of potential. You could share control of Jan's body with her, but at this point it seems like she was perhaps content to exist within you, even though you had tremendous fun teasing her from within while she was in control.

The real question is now, what sort of existence do you want to craft with your willing host?