There's a myth from the earliest days of Japan: that of the thunder-god, Take-Mikazuchi, sending a sword to the first emperor of the young nation to aid him in his conquests... since then, the divine blade has lain in the god's shrine, kept safe.

That's the story, anyway.

Because Futsu-no-Mitama himself isn't about to confirm or deny what's what - he's not even owning up to who he is to anyone who doesn't recognise his blade self, and who'd have thought a big, rough guy like him was something like that? In fact, he's mostly trying to wrap his head around the modern world. ...And around what the modern world calls "polite".

Smithy:

The technology is definitely different than it'd been in his era, thousands of years ago, but the principle's the same, and he's always been interested in the creative process... so here, he's investigating, examining the equipment with a delighted smile on his face. So if that goes there, and those shiny things do that...

Kitchen:

Looking for a taste of home, here, but he's not having much success. At least there's some things that look familiar, and rice isn't going to change much in any era, but these "cakes" and "pies" and all the rest?
...well, maybe that thing with the fruit might be worth a try. Hmm.