The Hosokawa and Yamana were powerful samurai clans during the Muromachi period (1336-1467). In 1467, a dispute between Hosokawa Katsumoto and Yamana Sozen spun out of control. The Onin War that followed destroyed Kyoto and weakened the Ashikaga shogunate, triggering the Warring States period.

Labels: 12 kingdoms, history, poseidon