Mōri Terumoto
Mōri Terumoto sent the Mōri's "Two Rivers", Kobayakawa Takakage and Kikkawa Motoharu to attack Kōzuki castle. The Amago forces under Yamanaka Yukimori were so vastly outnumbered and surrounded in the castle that victory was impossible. Yukimori sent a message to the Mōri general offering to surrender, and offering the ritual suicide of his master (Amago Katsuhisa). The offer was accepted, Amago forces surrendered, and Katsuhisa committed suicide.