It was obvious that Kimiko liked Jon, but she was four years younger than him. She was still in junior high school. It would be weird for them to have a relationship.
"Come on, Jon," she said, smiling.
Jon did have to admit, though, that she looked cute. And in another three or four years, she'd probably look as good as her sister. Then an idea popped into Jon's head. The stone! He could just use to make Kimiko a little older. Then it wouldn't be so awkward.
He took the stone out of his pocket and said "I wish ..."