You begin to drive back to your house, and Brooke in the passenger seat is holding the wooden box in her hands. One moment later, she has opened it and is fiddling with the necklace. You can tell she really wants to put it on, and probably won't wait until you get home.
You focus on the traffic in front of you for a bit. The next time you glance at Brooke, she is wearing the necklace.
"Are you serious? If you use its magic now, It is a great way to crash my car.
"I'm sure it will be fine. I will only make a small change, and I'll be very careful, I promise"
You let out a slightly exaggerated sigh but she doesn't pay attention to you at all and exclaims, "I can feel it!" I am changing!.”
Heavy traffic demands your full attention and a quick look at Brooke reveals no change.
Her eyes are closed. She puts a hand upon her crotch and she moans softly in pleasure, as if she is having an orgasm.
The bodice of her blue dress turns into a white shirt just like yours. And you can see her breasts and bra seem to have just vanished.
The skirt, the last remnant of her dress, morphs into jeans. The fly is open and reveals a hard penis growing under her fingers.
Her light brown hair turns black and shrinks until she has your short haircut.
As you watch her face changing, an angry honk brings your attention back to the road. Distracted as you were, it's a miracle you didn't crash or run a red light.
“Promise me you won't use it again until we get home.”
“It was so good, and so intense" Brooke says with a distorted version of your own voice.
"I promise , no more change for now” , he adds as he stores the necklace in its case.
You glance at Brooke from time to time, but he manages to control himself and the rest of the trip to your house goes smoothly.
When you get out of the car, you realize that even though you look like twins, Brooke is still 7 inches shorter than you. Once inside your house, Brooke takes the necklace out of its case.
You ask him "So what now, Do you want to become an animal? To shrink or to grow maybe? "
“No, I think it's your turn to try on the necklace. In my opinion, there is a man too many here. But you can try any transformation you want. So what will you do now that you can use real magic?“