However, as Ieyasu TOKUGAWA, who spent his childhood in Sunpu as a hostage for the Imagawa clan, decided in 1585 to make Sunpu as his stronghold and made efforts to develop the castle town, Sunpu recovered its vigor.
しかし、今川氏の人質として幼少時代を駿府で過ごした徳川家康が、1585年に駿府を本拠地にし、城下の整備に尽くしたため、元の活気をとり戻した。