These Ozakayashiki were among Japan's earliest forms of banks, facilitating domestic trade and helping to organize the income of the daimyo, which was in the form of koku, giant bales of rice.
Estes "Ozakayashiki" estaban entre as primeiras formas de bancos do Xapón, facilitando o comercio interior e axudando a organizar os ingresos dos daimyo, que eran en forma de koku, fardos xigantes de arroz.