Ōta was rebuilt as a temple for the Shinshu branch of Japanese Buddhism, severed from its history as a home to warrior monks. Wakayama Castle was then built on the same site, under the supervision of Toyotomi Hidenaga, Hideyoshi's brother, with Tōdō Takatora's participation. Asano Yoshinaga arrived in 1600 to serve as feudal lord, under Tokugawa Ieyasu. The castle was later attacked, in 1615, by forces loyal to Toyotomi Hideyori, who were trying to end the siege of Osaka.