These theories, however, lack historical grounds, and literature, etc. showing that '나라 (pronounced as nara)' was used in Korea during the time of the Manyoshu when the name 'Nara' appeared are yet to be found.
しかし、歴史的根拠に乏しく、「ナラ」の呼称が出る万葉集時代に朝鮮で「나라（発音ナラ）」と言う言葉が用いられていたことを示す文献等は現在存在しない。