[Video] More just the era, though I assume he might've heard some translators of other languages...
((...especially given Shishio's foreign purchase of the Rengoku, plus foreign trade in general in the era. Yay growing up in post-Matthew Perry Japan.))
I guess everyone beyond Sentience-san here is called a 'criminal', aren't they? It makes sense that some would be dangerous, wouldn't it? You wouldn't happen to know who the most dangerous people here are, would you? [Just an innocent request, really.]
My name is Soujirou Seta. It's a pleasure to make your acquaintance, Tate-Ducan-san.