From the Otate area, some ruins of ancient residences have been uncovered such as Otate Site and Matobe Site, however, the legend Hyoe KUROTORI is not based on the historical evidence and it is considered as a story created later.
緒立地区からは緒立遺跡や的場遺跡といった古い住居跡が見つかっているが、黒鳥兵衛伝説は史実に基づくものではなく、後世の創作と見られている。