Siege of Shibaya-kai

The Siege of Shibaya Castle (しばや巣の围; shibaya-kai-no-michun) was fought in the year 1467 when forces of the Sukashi Clan besieged the Yazou Clan's castle of Shibaya-kai in Katouko-do, Shinsu Prefecture. The siege was successful, and the castle fell to the Sukashi.

For a number of months, the Sukashi Clan had been urging the Yazou to swear allegiance and join them as a subu-ho (a subservient clan, stripped of title and land, and under the control of another larger and more powerful family). The Yazou had continuously refused. Finally, incensed by the disobedience of the clan, Himai Sukashi led a force of 450 men to Shibaya-kai and carried out his attack. The siege was relatively short, lasting for ten days. Eventually Sukashi forces overpowered the last Yazou defences, entered the castle, and executed the chief and his family.

The castle remained abandoned for almost twenty years after, until the eldest son of Himai Sukashi, Buto Sukashi, decided to rebuild it and take up residence with his wife, a member of the Sangi Clan. Although it was renamed to Sukashi Castle, the two never had children, and it fell back into its former abandoned state after their death.