The small island lying in the west of Hajijōjima Island is the Hachijō-kojima Island. In the Edo period, two villages called Toriuchi and Utsuki were located there. On this island, until the villages of Toriuchi and Utsuki were set up in 1947 (the twenty-second year of Shōwa), the feudal system of Nanushi (the nominal holder in charge of rice field lots) had been kept.