The City between the Rivers (U17) in the Ikoku province was an ancient holding that predated the return of the Unicorn to Rokugan. The city guarded the junction between the two main rivers that flowed out of Unicorn lands, the Sleeping River and the Firefly River. Only once had an invasion force moved against the Unicorn travelling up-river, and it was such a dismal failure it had never been tried again.