安土城
In the Medieval Period, the Sasaki clan ruled Omi, and afterward the Rokkaku clan, Kyōgoku clan and Azai clans ruled Omi. In the 1570s, Oda Nobunaga subjugated Omi and built Azuchi Castle on the eastern shores of Lake Biwa in 1579. Tōdō Takatora, Gamō Ujisato, Oichi, Yodo-dono, Ohatsu and Oeyo were Omi notables in the Sengoku period. In those times, Ninja were active in Kōka (See also Kōga-ryū).