Just himself, apparently. "I don't see anything different, Karyn," he said. "But it isn't possible for me to, if the stone changes memories. So what mythology are you talking about?"
"Remember the story of Adam and Eve? How Adam was created as the first man, and Eve created from him?"
"I don't know if I'd count the Bible as mythology. Mythology is supposed to be something that nobody really believes. But yeah I know it."
"I changed it so that there really is such a thing as a man! Males aren't mythical any more!"
"Wait a minute, Karyn. You're saying that there was no such thing as men, only women, that men are just things from mythology, and that the only reason I'm male is that you made a wish?"
"Exactly, Jon! How does it feel to be a man? Or a boy. I think a teenage man is called a boy. Or you can say a 'young man'."
"But it's what I remember! It isn't strange to me. It feels just like you didn't change anything! And if there's no such thing as a man, how do people have children?"
"Same way they always did, by giving birth."
"But then wouldn't everyone be the same?"
"As their mother, sure, but there's usually a little bit of change that adapts to the environment. I'm not a biologist, don't ask me how it works. Now tell me what it feels like to be a man."