This is Emely, a 14 year old teen going to a high school. She has a big crush on a classmate named Jonas (who also had a crush on her). They thought each other bodies would be nice, but it can always be better.
However:
As soon as she entered the shop, she saw a set of 2 rings. She asked a shop assistant and get to know the function of those rings.
They work like this:
You put one on your own finger and the other one on the finger of your boy-/girl-friend. They will lock there.
Now you can imagen, how your boy-/girl-friend should look like or just change specific features like breasts. They will change to fit your imagination.
She bought these rings and got back home.
As soon as she was home, she read the manual and noticed, that the imagened person can't swap gender or become an inanimate object/plant.
She put on one ring and noticed that