So there's bigger TES heads on the site, but from what I understand no

The Empire in TES goes through three iterations: The Nedes' First Empire, The Akiviri Second Empire, and The Cyrodiilic Third Empire.

The Japanese-coded guys were the Akiviri, The Imperials (Cyrodiilic) were subjects to the Akivir Potentate until it collapses and they build the third empire out of those ruins.