Oshima Province (渡島国, Oshima-no kuni) was a short-lived province located in Hokkaidō. It corresponded to the southern part of today's Oshima and Hiyama Subprefectures
Oshima Province (渡島国, Oshima-no kuni) was a short-lived province located in Hokkaidō. It corresponded to the southern part of today's Oshima and Hiyama Subprefectures