|Pseudonym reading||New Year's Eve|
|Specified type||Prefecture designation|
|Designated date||September 4, 1992|
|location||Owasemachi 14 ground division Inamoto|
The ruins of this castle are located in the west of the central area of Otsuchi-cho, and it is a typical medieval castle-shaped remains, with the steep mountains being skillfully used to arrange Honmaru, Ninomaru, Minomaru and others.
Excavations of 1958 detected the remains of the vacant lot and confirmed that it was a castle.
The builder of this castle is unknown, but it is known that Tono Akanuma's clan Ozuro Jiro is located in the Oyodokan.