You aren't terribly sure how you ended up over here. Weren't you applying for a job so that you could be more self-sufficient? Now... somehow... you're a little ginger apprentice to a witch you had thought was pretty attractive until not long ago. You still do, but in looking at her, you can't really remember /why/ you think she's hot. Something to do with... the color of her hair? No, that can't be right, you've got red hair too. Could it be... that was it! You remember just how thin and shapely she was, the contrast of her round breasts and thin waist had been what got you this far. "Don't look at me!" Marisa abruptly scolds, not seeming to notice /what/ you were looking at, as she tilts your head gently back to face the cages. "We've got to get home eventually. I don't want you to rush, but I do want you to /do/ something. You won't find the answer on my blouse!"
The pressure brings your wandering, terrified mind careening back to Earth, landing with an awful crash in your head. Your eyes wander the cages, and again they settle on that pair of huge blue eyes and the brown-furred-face behind it. "That's Tommy," Marisa offered helpfully from beside you, bending down to her knees and reaching towards the cage. The ferret inside bolts backward, curling up and shivering in a corner. "He was a real troublemaker. One of those nerds, I guess you'd call him. He somehow figured out to look for magic here. We let him poke around until he found something... then I had no choice. He could make a good familiar... Would you like to hold him? He doesn't bite..."
You think on that a moment, nodding before the connections fully meet up in your head, and you realize what she said. This ferret... and probably all the other animals here... used to be /human/?! You want to protest, to argue that actually you don't need a familiar and actually you'd rather she take you to your parents... but all that comes out of your mouth is another frightened squeak. She just gives you a pat, before lifting the ferret gently into the air by the scruff. You put out your hands without meaning to, and catch the shivering mammal. You both visibly relax at once, as though mere physical contact had settled your emotions. The ferret stops shivering and uncurls, standing up against your chest so it can get a good look at your face. You look back, into big /human/ eyes, blue and expressive.
"Hi," the ferret squeaks. "I'm Tommy." You don't realize it, but the ferret is getting smaller in your arms. Not a lot, but enough you subconsciously raise your arms so it stays in the same place relative to your face. You do notice the light tingling on your skin, which deepens a little as you... "Eeeep!" Your body shoots up four whole inches, though you don't gain a pound. Still, when you look down, you find the robes suddenly hang several inches too high.
"Really?" Marisa speaks up from beside you, sounding equal parts shocked and annoyed. "That's... No way you bonded with him that fast. Even Terah and I didn't... Arms up, David. Set the ferret down; I don't think he'll go anywhere." You obey both commands without thinking, and she's right. The animal waits patiently by your ankles as Marisa lifts your robe back off, then turns you a little to face a changing room off to one side, marching you in. There's a full-body mirror waiting for you, and in it, you can see you're the same girl, only... stretched a little. You look way thin, as thin as a little girl can be and still look healthy. You still look like a natural human being, but only barely. Your body's lit up with freckles too, a thousand little splotches concentrated around your eyes and by each hand and foot. The rest of your skin is as bleached-white as it was before, with only a few stray marks.
"Sorry!" The ferret squeaks. He makes a gesture, and you extend one of your now-longer legs towards him without knowing why. He scampers up your body with tiny claws which prick but don't hurt. He climbs up onto your shoulder, resting there as you both look into the mirror. He's a much younger animal than the one you first held, young enough to hold in one hand. His eyes have changed too: they're brown, like yours. "You just felt so good, so I connected with you! Sorry! I didn't mean to make you grow... but I think you look better this way! More... longer?" You smile in spite of yourself, patting the little ferret even as Marisa returns with a bigger robe.
"You won't be able to wear mine until I find the time to make it bigger," she said, glancing once at you. "But I think this is fine... you two make a good match. Never thought I'd have such a /tall/ sister though. When you're a few years older..." She helped you get dressed, slipping the robe on over you. It slides down easily and billows about your twig-like body like a dress, no longer conforming to the young curves of your body. But it fits now, too. "Told you your familiar would change you. You better not end up a troublemaker like him though, David." She looked stern. "A witch has the right to punish her apprentice." She smiled then, taking your hand and leading you back into the shop. Then out into the deserted parking lot to her waiting car. "We're not far from home, don't worry." She starts up the vehicle and takes it out onto the road. You sit beside her, feeling small but not as much shorter than she is as you were before. You sit quietly, your legs pressed together nervously. You hate going without underclothes... the robe is rough, and your chest already feels sore from rubbing onto it. To say nothing of how cold your legs feel, and how cold your new-made opening feels. At that thought though, Tommy vanishes into your robes and curls up on your lap. That makes you feel much warmer, and his soft fur is much better than the cloth on your more sensitive parts.
"Well, we're here!" You look up suddenly, at the bizarre street. There are only a few houses, with no connection at all. One looks like a huge medeval castle, another a quaint Japanese cottage, and everything in-between. "Now... by law, an apprentice that's a minor has to move in and live with with someone else until they turn eighteen." She seems somewhat frustrated by this as she mutters, "Child labor laws," before smiling again. "My family's done all these people a favor... they all owe us, and they'd love to have my ferrety little sister live with them. They're all pretty eccentric, but... very nice. They'll all treat you different, but... you'll still be my apprentice. Pick a house! I'll take you in to meet your new family. Just... not the castle. That's where I live."
You ponder on that a moment, looking at all the different homes on the street, each one from a different part of the world. Eventually you reach up and timidly gesture towards...