Toumakoku (投馬国, Toumakoku/Tsumakoku) is one of the countries said to have existed in the Japanese archipelago in the 3rd century. It is listed in the...

regarding the route from Tsushima Province to Nukuni, but the location of Toumakoku and Yamataikoku differ greatly between the Kyushu and Honshu theories...

。There is also a theory that the land of Tsuman (Tsuma) is identical to Toumakoku mentioned in Wajinden, which would show that the area was mentioned in...