It was found in a cemetery for high-social-status individuals that's being kept secret from the public due to the value.

The lead archaeologist at the grave site told Newsweek that the sword was an "elite object that marked its owner out as special." ...

It also carries an inscription by Tomomitsu. Another highlight is a “kodachi” short sword forged by Rai Kunitoshi, a representative swordsmith of the Rai school in Yamashiro province (present ...

KASHIHARA, Nara Prefecture--An iron sword that at more than 2 meters long ranks as the largest intact ancient blade ever discovered in Japan is heavily oxidized after being buried in soil for ...