Two names identified of the written letters on those swords were "jyotojin (a military officer who protects an Emperor or important personal)" and "tensojin (an officer who deals with paper work and records of the Imperial administration)," and these only referred to their occupations, so historians and scholars could conclude that the "Be (ancient political naming system)" system was not established as yet, at the end of the fifth century.
「杖刀人（じょうとうじん）」「典曹人（てんそうじん）」とあることから、まだ「部（べ）」の制度が5世紀末には成立していなかった。