Not at first...

Troy grasped the hairbrush excitedly, careful to keep his noise down. Mia's timing was almost perfect. Now he'd be able to watch her reactions as he played with the doll. Running his hands in between the bristles of the hairbrush, he managed to find a nice long strand of black hair. Everything was coming together.

He took the strand in one hand and with the other slowly traced his finger down the side of the doll. For a second, he thought he felt the doll twitch, but decided he was imagining things. Troy continued tracing his finger along the doll until he found a small opening in its back.

With hands shaking, Troy slowly inserted the hair into the doll's opening. With that, Mia and the doll were linked. Or supposed to be. He started to get excited for the possibilities. Would the doll magically transform, turning into a miniature Mia? Or would it turn out to be a scam, a waste of money he hadn't even wanted to spend?

Troy waited a moment. Nothing happened. He wasn't sure what he was expecting, but the doll was still a featureless doll. Of course nothing happened, he thought. Magic isn't real. He turned the doll over in his hands, hoping to see any change at all. He didn't notice anything at first, but then... the opening was gone. The entire surface of the doll was smooth. It was something, he guessed, but even after waiting another hour, no other changes took place.

Disappointed, he put the doll in its squishy storage tube, and left it in its package on the windowsill. Tonight was a full moon. As Troy drifted off to sleep, he couldn't believe what a fool he'd been. He had wasted this month's spending money on a bunch of magic dolls from an unnamed stall. He may as well have bought magic beans. All to avoid one awkward interaction with a girl.

Through the night, he dreamt of the blonde from the stalls, dancing seductively for him, with another version of him puppeteering her from above like a marionette. He dreamt of the old lady in the stall, her dark eyes glinting with an unreadable intent. And finally, he dreamt of Mia, unable to control herself as she moaned in pleasure on the train, at her school, at home.

The moonlight shone through Troy's window onto the doll tube, but the light didn't reflect back off of it. Instead, it seemed to be sucked into the tube, bathing the doll in an ethereal glow. As the tube absorbed more of the light, the features of the doll began to change. The once empty doll's face transformed to reflect Mia's delicate features, and the body stretched and swelled to perfectly match her curves.

Troy awoke in the morning with a rock solid hard-on, mind still foggy with fantasies of Mia moaning in public. He considered getting a tissue to rub one out, but as he sat up, he spotted it. The tube on the windowsill. Its colour, before an opaque pink, was now clear. Troy could see through it, see the doll resting inside. But it wasn't the same doll he'd left there last night.

The doll was now Mia's perfect doppelganger, if only one sixth her size and completely nude. All the glances Troy had stolen confirmed it. The mole on her left breast. Her pert, rosy nipples. It was her.

This meant that the magic was real. It had worked. The doll didn't just look like Mia, it was linked to her body. He could make her feel whatever he wanted. His heart raced with excitement, and his cock twitched with anticipation.

Troy picked up the tube carefully, afraid he was still dreaming. The outside of it was hard now, like plastic. Opening the lid, he reached inside and his fingers brushed the soft skin of the doll. It wasn't silicone, like he'd thought last night. It felt exactly like a real person. It felt like Mia. Dark thoughts intruded upon Troy's mind, and the erection straining against his boxers guided him. Now it was time to have some fun.