"You looked after a Prince?" Tidus repeats, a look of surprise as his minimal knowledge of what those words mean click in (thanks, cinema carriage).

"What, since you were a kid? Is that normal? How long?"

He's interested anyway, to hear more about it, curious before anything judgmental. Kings and Queens and all the rest may have come up in the few movies he's seen, but he didn't know the finer details. Just enough to recognise what their role meant, that there were those loyal to them, that they ruled over territory.