Title: Ajian sengoku daimyō Ōtomo-shi no kenkyū
Subjects: History, Relations, Nihon-Rekishi-Muromachi jidai, Nihon-Taigai kankei-Ajia-Rekishi, Ōtomo shi
Places: Ōita-ken (Japan), Japan, East Asia, Ōita-ken
People: Ōtomo family
Time periods: Period of civil wars, 1480-1603