Under the orders of Hideyoshi TOYOTOMI, Kazuuji NAKAMURA built the castle as the headquarters from which to rule the Koka-gun district, and became the lord of the castle in 1585.
豊臣秀吉の命により中村一氏が1585年（天正13年）、甲賀郡の支配の拠点として築き、入城した。