John was careful to only take a small sip from the vial. He felt his limbs shrink down, then his whole body; not much, but enough to notice his clothing was a bit too big for him.
"Did it work?" He asked. "I feel younger, but am I young enough? Wait a sec!" He shouted before the fairies could answer.
Holding his loose-fitting clothes up, John ran to the door. On the frame, there were a series of marks with either "J" or "A" and a number next to them, which John stood up straight next to. He placed his hand flat on top of his head with his finger up to the frame. Turning around, he saw that he came up around the mark with "J-12" next to it; confirming his height from around his 12th birthday.
"Alright, we're in business!" John shouted, almost losing hold of his clothes.
"So that means we can give you a wish." Mara said.
"So, what do you wish for?" Amethyst asked.