But it's very hard to prove such a thing, isn't it? That one is truly from the future. After all, we don't know what might happen, so how could we know if it's all just a story?

I might say I'm from Japan of the future, and we fly to and from the moon with silk balloons, and build houses out of glass.

Ah, it's Emperor Komei, by the way, Jeeves-san. He has been on the throne for just a little more than eighteen years!