Battle of Okehazama
was a retainer of the Japanese Imagawa clan during the Sengoku period of the 16th century. During the Battle of Okehazama in 1560, Naomori was killed while trying to protect his lord, Imagawa Yoshimoto during the attack led by Oda Nobunaga, who surprised his enemy when he attacked in thick fog following a hard rain. His childhood name was Toramatsu (虎松).