Jigen, Goemon and others in “Unfinished Business”

But a loon like that, I mean, this treasure could turn out to be a bunch of sumo wrestler bobblehead dolls or a big ball of tinfoil, y'know?

It's possible. But it's said that among his possessions was a sword, called Tsukikagemaru.

I have no idea what that means, Jigen...

I just explained that to you, it's a sword!

... But it sounds important to him, so whaddya say?