Geiyo Islands

The Geiyo Islands lie between Honshu and Shikoku in the Seto Inland Sea, amid narrow channels and powerful tides. In the age of the warring states, the Murakami maritime families made these islands their base. Their knowledge of the currents helped them guide vessels and control passage through the sea. The three Murakami houses also joined forces in battle, defeating a fleet aligned with Oda Nobunaga at the first Battle of Kizugawaguchi.