The Daishiki's Anvil Dojo was founded in the 9th century by the wealthy Kaiu Daimyo, Kaiu Daishiki, who felt the warriors of the Crab Clan could benefit from experience on the Kaiu Kabe before their gempukku. Gaining permission from the Crab Clan Champion he built the dojo and invited masters from every Crab school to train their student here. The only ones not allowed were the Berserkers, who were deemed too unstable to roam free in Kaiu Shiro. Being located in Kaiu Shiro meant it would be close to the Wall and the Shadowlands.