今川義元 (Imagawa Yoshimoto) was a prominent Japanese daimyo during the Sengoku period, known for his ambition and military prowess. He ruled the Suruga Province and sought to expand his territory, aiming to unify the region under his control. His strategic alliances and military campaigns made him a significant figure in the power struggles of the time. Yoshimoto is perhaps best known for his defeat at the Battle of Okehazama in 1560, where he was surprised and killed by the forces of Oda Nobunaga. This battle marked a turning point in Japanese history, as it significantly weakened the Imagawa clan and allowed Nobunaga to rise in power.