(On the back side) Since the previous generation, a sword like this (seven-pronged sword) have not existed; An heir of the King of Paekche mysteriously had imperial virtues by nature; Then it was made for the king of Wa for the first time; So it should be showed to the posterity; There is no Chinese character which corresponds to ** in the dictionary.
〔裏面〕先世以来未有此刀　百□王世子奇生聖徳　故為倭王旨造　伝示後世　□に該当する字、辞書にない。