Definitions by Svetlomir Randev

Koku 

A koku (Japanese) is a quantity of rice, historically defined as enough rice to feed one person for one year, then as 180.39 lite

It lets us earn about 330.000 Ryu
per year, equalling 200.000 Koku.
(Kozure Okami 1972)

Koku by Svetlomir Randev March 17, 2005