Hm. Time travel indeed.

"I did grow up, even if it wasn't always me. For a few years--- but that's not of your concern at your age."

"But, just so you know, someday you will grow again. Even if we'll never be similar age again, as you had your... break. For some years."

And then Isa smirks. "To make up for our time differences, I can show you something... 'cool', I suppose. If you wish."