Emperor Heian period Japan Japanese History imperial family

Uesugi clan Hojo clan Sengoku period Sengoku warlords Japanese History 越後国

writer novelist Japan Japanese History 歴史評論家

writer Japan Japanese History historian 歴史評論

university professor Japan Japanese History historian Edo period

writer educator Japan Japanese History historian

university professor Japan Japanese History historian Edo period

Medieval history university professor Japan Japanese History historian writer

Sengoku period Sengoku warlords Japan Japanese History military commander 美濃国