[quote=Chrononaut]
They LITERALLY make katana swords and they're xenophobic and on an island and the most technologically advanced race. All things japan has, was, and is.Also this.
[/quote]

Woah, there, slow down, n'wah.

It's said in Morrowind that the old Dunmer smithing masters are the only ones on Tamriel who can forge Akaviri style weaponry and it is a dying art. The proximity to Akavir and the past contact with them has allowed them to see katanas and whatnot up-close. If anyone strikes me as inspired by Japan, it'd be, well, the most obvious, the Tsaesci, or the Yokudans.