The , or `` Black Fortress '' , was a fortress of the `` Kanrei '' Shiba Takatsune located in Echizen Province ( present-day Nittazuka , Fukui , Fukui Prefecture ) in the Hokuriku region of Japan .

Hosokawa Akiuji had been ordered Request by Ashikaga Takauji to aid Shiba Takatsune in the defense , and encountered Hostile_encounter Nitta 's force a short distance from the fortress .